{"id":6943,"date":"2026-09-20T06:07:59","date_gmt":"2026-09-20T06:07:59","guid":{"rendered":"https:\/\/otus.ru\/journal\/?p=6943"},"modified":"2026-09-25T15:40:43","modified_gmt":"2026-09-25T15:40:43","slug":"double-i-typizacia-dannyh-v-c","status":"publish","type":"post","link":"https:\/\/otus.ru\/journal\/double-i-typizacia-dannyh-v-c\/","title":{"rendered":"\u041f\u043e\u0447\u0435\u043c\u0443 0.1 + 0.2 != 0.3 \u0432 C: \u0442\u0438\u043f double \u0438 \u0447\u0438\u0441\u043b\u0430 \u0441 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u043e\u0439"},"content":{"rendered":"<p><strong>\u0427\u0438\u0441\u043b\u043e \u0441 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u043e\u0439<\/strong> \u0432 C &#8212; \u044d\u0442\u043e \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u043d\u043e\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0447\u0438\u0441\u043b\u0430 \u043f\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0443 <strong>IEEE 754<\/strong>: \u0437\u043d\u0430\u043a, \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u0430 \u0438 \u043f\u043e\u0440\u044f\u0434\u043e\u043a (\u044d\u043a\u0441\u043f\u043e\u043d\u0435\u043d\u0442\u0430), \u0443\u043f\u0430\u043a\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0432 \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e \u0431\u0438\u0442. \u041a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e \u0442\u0443\u0442 &#8212; \u00ab\u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u043d\u043e\u0435\u00bb: \u0434\u0430\u043b\u0435\u043a\u043e \u043d\u0435 \u043a\u0430\u0436\u0434\u0430\u044f \u0434\u0435\u0441\u044f\u0442\u0438\u0447\u043d\u0430\u044f \u0434\u0440\u043e\u0431\u044c \u0443\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0432 \u0434\u0432\u043e\u0438\u0447\u043d\u0443\u044e \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u0443 \u0442\u043e\u0447\u043d\u043e, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.1 + 0.2<\/code> \u0432 C \u043d\u0435 \u0440\u0430\u0432\u043d\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.3<\/code>. \u041d\u0438\u0436\u0435 \u0440\u0430\u0437\u0431\u0435\u0440\u0435\u043c \u0442\u0440\u0438 \u0442\u0438\u043f\u0430 (<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code>), \u043f\u043e\u0447\u0435\u043c\u0443 \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u0435\u0442 \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u044c, \u043a\u0430\u043a \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0447\u0438\u0441\u043b\u0430 \u0447\u0435\u0440\u0435\u0437 \u044d\u043f\u0441\u0438\u043b\u043e\u043d, \u0447\u0442\u043e \u0434\u0435\u043b\u0430\u0442\u044c \u0441\u043e \u0441\u043f\u0435\u0446\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">inf<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">nan<\/code> \u0438 \u043a\u0430\u043a\u0438\u0435 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">printf<\/code> \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c.<\/p>\n<div class=\"oj-toc\" style=\"background:#f6f6f6;border-radius:8px;padding:14px 20px;margin:20px 0\">\n<p><strong>\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435<\/strong><\/p>\n<ol>\n<li><a href=\"#s1\">\u0422\u0440\u0438 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0442\u0438\u043f\u0430: float, double, long double<\/a><\/li>\n<li><a href=\"#s2\">\u041a\u0430\u043a \u0443\u0441\u0442\u0440\u043e\u0435\u043d\u043e IEEE 754 \u0438 \u043e\u0442\u043a\u0443\u0434\u0430 \u0431\u0435\u0440\u0435\u0442\u0441\u044f \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u044c<\/a><\/li>\n<li><a href=\"#s3\">\u041f\u043e\u0447\u0435\u043c\u0443 0.1 + 0.2 != 0.3<\/a><\/li>\n<li><a href=\"#s4\">\u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b printf: %f, %e, %g<\/a><\/li>\n<li><a href=\"#s5\">\u0421\u043f\u0435\u0446\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f: inf, nan \u0438 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435<\/a><\/li>\n<li><a href=\"#s6\">\u0412\u044b\u0432\u043e\u0434\u044b<\/a><\/li>\n<li><a href=\"#s7\">\u0413\u0434\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \/ \u0441\u0432\u044f\u0437\u044c \u0441 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u043e\u0439<\/a><\/li>\n<li><a href=\"#s8\">FAQ<\/a><\/li>\n<\/ol>\n<\/div>\n<p>\u0421\u0442\u0430\u0442\u044c\u044f \u0443\u0437\u043a\u0430\u044f: \u043e\u043d\u0430 \u043f\u0440\u043e \u0447\u0438\u0441\u043b\u0430 \u0441 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u043e\u0439, \u0430 \u043d\u0435 \u043f\u0440\u043e \u043e\u0431\u0437\u043e\u0440 \u0432\u0441\u0435\u0445 \u0442\u0438\u043f\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445 C. \u0426\u0435\u043b\u044b\u0435 \u0442\u0438\u043f\u044b \u0438 \u043e\u0431\u0449\u0430\u044f \u0442\u0438\u043f\u0438\u0437\u0430\u0446\u0438\u044f &#8212; \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u0430\u044f \u0442\u0435\u043c\u0430.<\/p>\n<h2 id=\"s1\">\u0422\u0440\u0438 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0442\u0438\u043f\u0430: float, double, long double<\/h2>\n<p>\u0412 C \u0435\u0441\u0442\u044c \u0440\u043e\u0432\u043d\u043e \u0442\u0440\u0438 \u0442\u0438\u043f\u0430 \u0441 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u043e\u0439. \u0420\u0430\u0437\u043b\u0438\u0447\u0430\u044e\u0442\u0441\u044f \u043e\u043d\u0438 \u0448\u0438\u0440\u0438\u043d\u043e\u0439 \u0438, \u043a\u0430\u043a \u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0435, \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u044c\u044e \u0438 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u043e\u043c.<\/p>\n<ul>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code> &#8212; \u043e\u0434\u0438\u043d\u0430\u0440\u043d\u0430\u044f \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u044c IEEE 754, \u043e\u0431\u044b\u0447\u043d\u043e 4 \u0431\u0430\u0439\u0442\u0430, \u043e\u043a\u043e\u043b\u043e 7 \u0437\u043d\u0430\u0447\u0430\u0449\u0438\u0445 \u0434\u0435\u0441\u044f\u0442\u0438\u0447\u043d\u044b\u0445 \u0446\u0438\u0444\u0440.<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code> &#8212; \u0434\u0432\u043e\u0439\u043d\u0430\u044f \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u044c IEEE 754, \u043e\u0431\u044b\u0447\u043d\u043e 8 \u0431\u0430\u0439\u0442, \u043e\u043a\u043e\u043b\u043e 15-16 \u0437\u043d\u0430\u0447\u0430\u0449\u0438\u0445 \u0446\u0438\u0444\u0440. \u042d\u0442\u043e \u0442\u0438\u043f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0434\u043b\u044f \u0434\u0440\u043e\u0431\u043d\u044b\u0445 \u043b\u0438\u0442\u0435\u0440\u0430\u043b\u043e\u0432 (<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">3.14<\/code> &#8212; \u044d\u0442\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>, \u0430 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">3.14f<\/code> &#8212; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code>).<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code> &#8212; \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u0430\u044f \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u044c. \u0428\u0438\u0440\u0438\u043d\u0430 \u0437\u0430\u0432\u0438\u0441\u0438\u0442 \u043e\u0442 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b: \u043d\u0430 x86\/x86-64 \u0441 GCC \u044d\u0442\u043e \u043e\u0431\u044b\u0447\u043d\u043e 80-\u0431\u0438\u0442\u043d\u044b\u0439 \u0444\u043e\u0440\u043c\u0430\u0442 x87 (\u0445\u0440\u0430\u043d\u0438\u0442\u0441\u044f \u0432 12 \u0438\u043b\u0438 16 \u0431\u0430\u0439\u0442\u0430\u0445), \u0430 \u043d\u0430 ARM (\u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 Apple Silicon) \u0438 \u0432 MSVC <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code> \u0447\u0430\u0441\u0442\u043e \u0441\u043e\u0432\u043f\u0430\u0434\u0430\u0435\u0442 \u0441 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>.<\/li>\n<\/ul>\n<p>\u041d\u0435 \u043f\u043e\u043b\u0430\u0433\u0430\u0439\u0442\u0435\u0441\u044c \u043d\u0430 \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e \u0431\u0430\u0439\u0442: \u043f\u0435\u0447\u0430\u0442\u0430\u0439\u0442\u0435 \u0435\u0433\u043e \u0441\u0430\u043c\u0438 \u0447\u0435\u0440\u0435\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sizeof<\/code>. \u0417\u043d\u0430\u0447\u0430\u0449\u0438\u0435 \u0446\u0438\u0444\u0440\u044b \u0434\u043b\u044f \u0442\u0438\u043f\u0430 \u0434\u0430\u044e\u0442 \u043c\u0430\u043a\u0440\u043e\u0441\u044b <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">FLT_DIG<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">DBL_DIG<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">LDBL_DIG<\/code> \u0438\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">&lt;float.h&gt;<\/code>.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0421\u0432\u043e\u0439\u0441\u0442\u0432\u043e<\/th>\n<th>float<\/th>\n<th>double<\/th>\n<th>long double<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0424\u043e\u0440\u043c\u0430\u0442 IEEE 754<\/td>\n<td>single<\/td>\n<td>double<\/td>\n<td>extended (\u0437\u0430\u0432\u0438\u0441\u0438\u0442 \u043e\u0442 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b)<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u043c\u0435\u0440, \u0442\u0438\u043f\u0438\u0447\u043d\u043e<\/td>\n<td>4 \u0431\u0430\u0439\u0442\u0430<\/td>\n<td>8 \u0431\u0430\u0439\u0442<\/td>\n<td>8, 12 \u0438\u043b\u0438 16 \u0431\u0430\u0439\u0442<\/td>\n<\/tr>\n<tr>\n<td>\u0411\u0438\u0442 \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u044b<\/td>\n<td>24<\/td>\n<td>53<\/td>\n<td>64 (\u0444\u043e\u0440\u043c\u0430\u0442 x87) \u0438\u043b\u0438 \u043a\u0430\u043a double<\/td>\n<\/tr>\n<tr>\n<td>\u0417\u043d\u0430\u0447\u0430\u0449\u0438\u0445 \u0446\u0438\u0444\u0440<\/td>\n<td>~7 (FLT_DIG=6)<\/td>\n<td>~15-16 (DBL_DIG=15)<\/td>\n<td>\u0434\u043e ~18-19 \u043d\u0430 x86<\/td>\n<\/tr>\n<tr>\n<td>\u0414\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u043c\u043e\u0434\u0443\u043b\u044f<\/td>\n<td>~1.2e-38 .. 3.4e38<\/td>\n<td>~2.2e-308 .. 1.8e308<\/td>\n<td>\u0431\u043e\u043b\u044c\u0448\u0435 \u043d\u0430 x86<\/td>\n<\/tr>\n<tr>\n<td>\u041b\u0438\u0442\u0435\u0440\u0430\u043b \/ \u0441\u0443\u0444\u0444\u0438\u043a\u0441<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1.0f<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1.0<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1.0L<\/code><\/td>\n<\/tr>\n<tr>\n<td>printf<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code> (\u0441\u043c. \u043d\u0438\u0436\u0435)<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%Lf<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u041f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0432\u044b\u0431\u043e\u0440 \u043f\u0440\u043e\u0441\u0442\u043e\u0439: \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0431\u0435\u0440\u0438\u0442\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>. <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code> &#8212; \u043a\u043e\u0433\u0434\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u043d\u0430 \u043f\u0430\u043c\u044f\u0442\u044c (\u0431\u043e\u043b\u044c\u0448\u0438\u0435 \u043c\u0430\u0441\u0441\u0438\u0432\u044b, GPU-\u0434\u0430\u043d\u043d\u044b\u0435), \u0446\u0435\u043d\u043e\u0439 \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u0438. <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code> &#8212; \u0440\u0435\u0434\u043a\u0438\u0435 \u0440\u0430\u0441\u0447\u0435\u0442\u044b, \u0433\u0434\u0435 \u043d\u0443\u0436\u043d\u044b \u043b\u0438\u0448\u043d\u0438\u0435 \u0446\u0438\u0444\u0440\u044b, \u0438 \u0441 \u043e\u0433\u043b\u044f\u0434\u043a\u043e\u0439 \u043d\u0430 \u0442\u043e, \u0447\u0442\u043e \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u0443 \u043d\u0435\u0433\u043e \u043d\u0435\u0442.<\/p>\n<h2 id=\"s2\">\u041a\u0430\u043a \u0443\u0441\u0442\u0440\u043e\u0435\u043d\u043e IEEE 754 \u0438 \u043e\u0442\u043a\u0443\u0434\u0430 \u0431\u0435\u0440\u0435\u0442\u0441\u044f \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u044c<\/h2>\n<p>\u0427\u0438\u0441\u043b\u043e \u0445\u0440\u0430\u043d\u0438\u0442\u0441\u044f \u0432 \u043d\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0434\u0432\u043e\u0438\u0447\u043d\u043e\u0439 \u0444\u043e\u0440\u043c\u0435: <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">\u0437\u043d\u0430\u043a * \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u0430 * 2^\u043f\u043e\u0440\u044f\u0434\u043e\u043a<\/code>, \u0433\u0434\u0435 \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u0430 &#8212; \u0434\u0440\u043e\u0431\u044c \u0432\u0438\u0434\u0430 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1.xxxx<\/code> \u0432 \u0434\u0432\u043e\u0438\u0447\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0411\u0438\u0442 \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u044b \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e (24 \u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code>, 53 \u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>), \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0442\u043e\u0447\u043d\u043e \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043c\u044b \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0435 \u0434\u0440\u043e\u0431\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0440\u0430\u0441\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u0441\u0443\u043c\u043c\u0443 \u0441\u0442\u0435\u043f\u0435\u043d\u0435\u0439 \u0434\u0432\u043e\u0439\u043a\u0438 \u0432 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u0445 \u044d\u0442\u043e\u0439 \u0434\u043b\u0438\u043d\u044b.<\/p>\n<p>\u0427\u0438\u0441\u043b\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.5<\/code> = <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">2^-1<\/code> \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043c\u043e \u0442\u043e\u0447\u043d\u043e. \u0410 \u0432\u043e\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.1<\/code> \u0432 \u0434\u0432\u043e\u0438\u0447\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 &#8212; \u0431\u0435\u0441\u043a\u043e\u043d\u0435\u0447\u043d\u0430\u044f \u043f\u0435\u0440\u0438\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0434\u0440\u043e\u0431\u044c (\u043a\u0430\u043a <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1\/3<\/code> \u0432 \u0434\u0435\u0441\u044f\u0442\u0438\u0447\u043d\u043e\u0439). \u0415\u0435 \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043e\u0431\u0440\u0435\u0437\u0430\u0442\u044c \u043f\u043e \u0434\u043b\u0438\u043d\u0435 \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u044b, \u0438 \u0432 \u043f\u0430\u043c\u044f\u0442\u044c \u043b\u043e\u0436\u0438\u0442\u0441\u044f \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043c\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0447\u0443\u0442\u044c-\u0447\u0443\u0442\u044c \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0449\u0435\u0435\u0441\u044f \u043e\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.1<\/code>. \u041e\u0442\u0441\u044e\u0434\u0430 \u0438 \u043d\u0430\u043a\u043e\u043f\u043b\u0435\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 \u043f\u0440\u0438 \u0441\u043b\u043e\u0436\u0435\u043d\u0438\u0438.<\/p>\n<h2 id=\"s3\">\u041f\u043e\u0447\u0435\u043c\u0443 0.1 + 0.2 != 0.3<\/h2>\n<p>\u041f\u043e\u043a\u0430\u0436\u0435\u043c \u044d\u0442\u043e \u0442\u0440\u043e\u0439\u043a\u043e\u0439: \u043d\u0430\u0438\u0432\u043d\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430, \u0435\u0435 \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0432\u044b\u0432\u043e\u0434, \u0437\u0430\u0442\u0435\u043c \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0435 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435.<\/p>\n<p>\u041d\u0435\u0432\u0435\u0440\u043d\u044b\u0439 \u043f\u043e\u0434\u0445\u043e\u0434 &#8212; \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u0434\u0440\u043e\u0431\u043d\u044b\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u043c <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">==<\/code>:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #7F848E\">#include<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #7F848E\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color: #E5C07B\">int<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #61AFEF; font-weight: bold\">main<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E5C07B\">void<\/span><span style=\"color: #ABB2BF\">) {<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">a<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0.1<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">b<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0.2<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">c<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0.3<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"a + b = %.17f\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">a<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">+<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">b<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"c     = %.17f\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">c<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">if<\/span><span style=\"color: #ABB2BF\"> (<\/span><span style=\"color: #E06C75\">a<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">+<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">b<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">==<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">c<\/span><span style=\"color: #ABB2BF\">)<\/span>\n<span style=\"color: #ABB2BF\">        <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"ravno\\n\"<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">else<\/span>\n<span style=\"color: #ABB2BF\">        <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"NE ravno\\n\"<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">return<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">}<\/span><\/code><\/pre>\n<p>\u0424\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0432\u044b\u0432\u043e\u0434 (clang, macOS; \u043d\u0430 GCC\/Linux \u0442\u043e \u0436\u0435 \u0441\u0430\u043c\u043e\u0435):<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">a + b = 0.30000000000000004\nc     = 0.29999999999999999\nNE ravno\n<\/code><\/pre>\n<p>\u0412\u0438\u0434\u043d\u043e, \u0447\u0442\u043e \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.1 + 0.2<\/code>, \u0438 \u0441\u0430\u043c \u043b\u0438\u0442\u0435\u0440\u0430\u043b <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.3<\/code> \u0445\u0440\u0430\u043d\u044f\u0442\u0441\u044f \u0441 \u043a\u0440\u043e\u0448\u0435\u0447\u043d\u043e\u0439 \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u044c\u044e, \u0438 \u044d\u0442\u0438 \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u0438 \u043d\u0435 \u0441\u043e\u0432\u043f\u0430\u043b\u0438. \u041e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">==<\/code> \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u0442\u043e\u0447\u043d\u043e\u0435 \u0440\u0430\u0432\u0435\u043d\u0441\u0442\u0432\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439, \u0430 \u0434\u0432\u0430 \u0445\u0440\u0430\u043d\u0438\u043c\u044b\u0445 \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u043b\u0438\u0447\u0430\u044e\u0442\u0441\u044f, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0434\u0430\u0435\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">NE ravno<\/code>. \u042d\u0442\u043e \u043d\u0435 \u0431\u0430\u0433 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u0430, \u0430 \u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0435 IEEE 754.<\/p>\n<p>\u041f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u044b\u0439 \u043f\u043e\u0434\u0445\u043e\u0434 &#8212; \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u043d\u0435 \u043d\u0430 \u0442\u043e\u0447\u043d\u043e\u0435 \u0440\u0430\u0432\u0435\u043d\u0441\u0442\u0432\u043e, \u0430 \u043d\u0430 \u0431\u043b\u0438\u0437\u043e\u0441\u0442\u044c: \u043c\u043e\u0434\u0443\u043b\u044c \u0440\u0430\u0437\u043d\u043e\u0441\u0442\u0438 \u043c\u0435\u043d\u044c\u0448\u0435 \u043c\u0430\u043b\u043e\u0433\u043e \u043f\u043e\u0440\u043e\u0433\u0430 (\u044d\u043f\u0441\u0438\u043b\u043e\u043d).<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #7F848E\">#include<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #7F848E\">&lt;stdio.h&gt;<\/span>\n<span style=\"color: #7F848E\">#include<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #7F848E\">&lt;math.h&gt;<\/span>\n\n<span style=\"color: #E5C07B\">int<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #61AFEF; font-weight: bold\">main<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E5C07B\">void<\/span><span style=\"color: #ABB2BF\">) {<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">a<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0.1<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">b<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0.2<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">c<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0.3<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">eps<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">1e-9<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">if<\/span><span style=\"color: #ABB2BF\"> (<\/span><span style=\"color: #E06C75\">fabs<\/span><span style=\"color: #ABB2BF\">((<\/span><span style=\"color: #E06C75\">a<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">+<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">b<\/span><span style=\"color: #ABB2BF\">) <\/span><span style=\"color: #56B6C2\">-<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">c<\/span><span style=\"color: #ABB2BF\">) <\/span><span style=\"color: #56B6C2\">&lt;<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">eps<\/span><span style=\"color: #ABB2BF\">)<\/span>\n<span style=\"color: #ABB2BF\">        <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"schitaem ravnymi\\n\"<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">else<\/span>\n<span style=\"color: #ABB2BF\">        <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"ne ravny\\n\"<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">return<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">}<\/span><\/code><\/pre>\n<p>\u0412\u044b\u0432\u043e\u0434:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">schitaem ravnymi\n<\/code><\/pre>\n<p><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">fabs<\/code> \u0438\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">&lt;math.h&gt;<\/code> \u0434\u0430\u0435\u0442 \u043c\u043e\u0434\u0443\u043b\u044c \u0440\u0430\u0437\u043d\u043e\u0441\u0442\u0438. \u041f\u043e\u0440\u043e\u0433 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1e-9<\/code> \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442 \u0434\u043b\u044f \u0447\u0438\u0441\u0435\u043b \u043f\u043e\u0440\u044f\u0434\u043a\u0430 \u0435\u0434\u0438\u043d\u0438\u0446\u044b. \u0412\u0430\u0436\u043d\u0430\u044f \u0433\u0440\u0430\u043d\u0438\u0446\u0430: \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u044d\u043f\u0441\u0438\u043b\u043e\u043d \u043f\u043b\u043e\u0445 \u0434\u043b\u044f \u043e\u0447\u0435\u043d\u044c \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u0438\u043b\u0438 \u043e\u0447\u0435\u043d\u044c \u043c\u0430\u043b\u044b\u0445 \u0432\u0435\u043b\u0438\u0447\u0438\u043d &#8212; \u0443 \u0447\u0438\u0441\u0435\u043b \u043f\u043e\u0440\u044f\u0434\u043a\u0430 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1e9<\/code> \u0448\u0430\u0433 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0430\u043c \u0431\u043e\u043b\u044c\u0448\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1e-9<\/code>, \u0438 \u0442\u0430\u043a\u043e\u0435 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0432\u044b\u0440\u043e\u0436\u0434\u0430\u0435\u0442\u0441\u044f. \u0414\u043b\u044f \u0448\u0438\u0440\u043e\u043a\u043e\u0433\u043e \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u0430 \u043f\u043e\u0440\u043e\u0433 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u044e\u0442 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0441\u0430\u043c\u0438\u0445 \u0447\u0438\u0441\u0435\u043b (\u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u044c), \u043d\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u00ab\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0433\u043e\u00bb \u044d\u043f\u0441\u0438\u043b\u043e\u043d\u0430 \u043d\u0435\u0442 &#8212; \u0435\u0433\u043e \u0432\u044b\u0431\u0438\u0440\u0430\u044e\u0442 \u043f\u043e\u0434 \u0437\u0430\u0434\u0430\u0447\u0443.<\/p>\n<h2 id=\"s4\">\u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b printf: %f, %e, %g<\/h2>\n<p>\u0414\u043b\u044f \u0432\u044b\u0432\u043e\u0434\u0430 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">printf<\/code> \u0435\u0441\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u043e\u0432. \u0412\u043e\u0437\u044c\u043c\u0435\u043c <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double x = 12345.6789<\/code>:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #7F848E\">#include<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #7F848E\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color: #E5C07B\">int<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #61AFEF; font-weight: bold\">main<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E5C07B\">void<\/span><span style=\"color: #ABB2BF\">) {<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">x<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">12345.6789<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"%%f  -&gt; %f\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">x<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"%%e  -&gt; %e\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">x<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"%%g  -&gt; %g\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">x<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"%%.2f -&gt; %.2f\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">x<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">return<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">}<\/span><\/code><\/pre>\n<p>\u0412\u044b\u0432\u043e\u0434:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">%f  -&gt; 12345.678900\n%e  -&gt; 1.234568e+04\n%g  -&gt; 12345.7\n%.2f -&gt; 12345.68\n<\/code><\/pre>\n<p>\u041a\u043e\u0440\u043e\u0442\u043a\u043e \u043e \u0432\u044b\u0431\u043e\u0440\u0435: <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code> &#8212; \u043e\u0431\u044b\u0447\u043d\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c \u0441 \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0442\u043e\u0447\u043a\u043e\u0439 (\u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e 6 \u0437\u043d\u0430\u043a\u043e\u0432 \u043f\u043e\u0441\u043b\u0435 \u0442\u043e\u0447\u043a\u0438), <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%e<\/code> &#8212; \u043d\u0430\u0443\u0447\u043d\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u0441 \u044d\u043a\u0441\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0439, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%g<\/code> &#8212; \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u0430\u044f (\u0441\u0430\u043c\u0430 \u0432\u044b\u0431\u0438\u0440\u0430\u0435\u0442 \u043c\u0435\u0436\u0434\u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%e<\/code> \u0438 \u0443\u0431\u0438\u0440\u0430\u0435\u0442 \u043b\u0438\u0448\u043d\u0438\u0435 \u043d\u0443\u043b\u0438). \u0422\u043e\u0447\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0434\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%.Nf<\/code>.<\/p>\n<p>\u0414\u0432\u0435 \u0447\u0430\u0441\u0442\u044b\u0435 \u043b\u043e\u0432\u0443\u0448\u043a\u0438. \u041f\u0435\u0440\u0432\u0430\u044f: \u0434\u043b\u044f <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code> \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">printf<\/code> \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u0438\u043c\u0435\u043d\u043d\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code> (\u043d\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%lf<\/code>), \u0430 \u0432\u043e\u0442 \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">scanf<\/code> \u0434\u043b\u044f <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code> \u043d\u0443\u0436\u0435\u043d <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%lf<\/code>. \u0412\u0442\u043e\u0440\u0430\u044f: \u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code> \u0441\u0432\u043e\u0439 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%Lf<\/code>. \u0421\u0430\u043c <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code> \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">printf<\/code> \u0442\u043e\u0436\u0435 \u043f\u0435\u0447\u0430\u0442\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code>, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0432 \u0432\u0430\u0440\u0438\u0430\u0442\u0438\u0432\u043d\u0443\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u043e\u043d \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u0435\u0442\u0441\u044f \u0434\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>.<\/p>\n<h2 id=\"s5\">\u0421\u043f\u0435\u0446\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f: inf, nan \u0438 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435<\/h2>\n<p>IEEE 754 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u0442 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043a\u043e\u043d\u0435\u0447\u043d\u044b\u0435 \u0447\u0438\u0441\u043b\u0430. \u0414\u0435\u043b\u0435\u043d\u0438\u0435 \u043d\u0430 \u043d\u043e\u043b\u044c \u0432 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u0435 \u043d\u0435 \u0440\u043e\u043d\u044f\u0435\u0442 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0443, \u0430 \u0434\u0430\u0435\u0442 \u0431\u0435\u0441\u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0441\u0442\u044c \u0438\u043b\u0438 \u00ab\u043d\u0435 \u0447\u0438\u0441\u043b\u043e\u00bb.<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #7F848E\">#include<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #7F848E\">&lt;stdio.h&gt;<\/span>\n<span style=\"color: #7F848E\">#include<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #7F848E\">&lt;math.h&gt;<\/span>\n\n<span style=\"color: #E5C07B\">int<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #61AFEF; font-weight: bold\">main<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E5C07B\">void<\/span><span style=\"color: #ABB2BF\">) {<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">big<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">1e308<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">inf<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">big<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">*<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">10.0<\/span><span style=\"color: #ABB2BF\">;   <\/span><span style=\"color: #7F848E\">\/* perepolnenie -&gt; beskonechnost *\/<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E5C07B\">double<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">nan<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">=<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">inf<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">-<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">inf<\/span><span style=\"color: #ABB2BF\">;    <\/span><span style=\"color: #7F848E\">\/* neopredelennost -&gt; nan *\/<\/span>\n\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"inf = %f\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">inf<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"nan = %f\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">nan<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"nan == nan -&gt; %d\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">nan<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #56B6C2\">==<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">nan<\/span><span style=\"color: #ABB2BF\">);<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"isnan(nan) -&gt; %d\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">isnan<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">nan<\/span><span style=\"color: #ABB2BF\">));<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #E06C75\">printf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"isinf(inf) -&gt; %d\\n\"<\/span><span style=\"color: #ABB2BF\">, <\/span><span style=\"color: #E06C75\">isinf<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">inf<\/span><span style=\"color: #ABB2BF\">));<\/span>\n<span style=\"color: #ABB2BF\">    <\/span><span style=\"color: #C678DD\">return<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #D19A66\">0<\/span><span style=\"color: #ABB2BF\">;<\/span>\n<span style=\"color: #ABB2BF\">}<\/span><\/code><\/pre>\n<p>\u0412\u044b\u0432\u043e\u0434:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">inf = inf\nnan = nan\nnan == nan -&gt; 0\nisnan(nan) -&gt; 1\nisinf(inf) -&gt; 1\n<\/code><\/pre>\n<p>\u041a\u043b\u044e\u0447\u0435\u0432\u043e\u0439 \u043c\u043e\u043c\u0435\u043d\u0442: <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">nan<\/code> \u043d\u0435 \u0440\u0430\u0432\u0435\u043d \u043d\u0438\u0447\u0435\u043c\u0443, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u0441\u0430\u043c\u043e\u0433\u043e \u0441\u0435\u0431\u044f, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">nan == nan<\/code> \u0434\u0430\u0435\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0<\/code> (\u043b\u043e\u0436\u044c). \u041f\u0440\u043e\u0432\u0435\u0440\u044f\u0442\u044c \u043d\u0430 \u00ab\u043d\u0435 \u0447\u0438\u0441\u043b\u043e\u00bb \u043d\u0430\u0434\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">isnan<\/code> \u0438\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">&lt;math.h&gt;<\/code>, \u043d\u0430 \u0431\u0435\u0441\u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0441\u0442\u044c &#8212; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">isinf<\/code>. \u041f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 (<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">big * 10.0<\/code>) \u0443\u0432\u043e\u0434\u0438\u0442 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">inf<\/code>, \u0430 \u043d\u0435 \u043e\u0431\u043d\u0443\u043b\u044f\u0435\u0442 \u0435\u0433\u043e, \u043a\u0430\u043a \u044d\u0442\u043e \u0431\u044b\u0432\u0430\u0435\u0442 \u0443 \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f.<\/p>\n<h2 id=\"s6\">\u0412\u044b\u0432\u043e\u0434\u044b<\/h2>\n<ul>\n<li>\u0427\u0438\u0441\u043b\u0430 \u0441 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u043e\u0439 \u0432 C (<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code>) \u0445\u0440\u0430\u043d\u044f\u0442 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u043d\u043e \u043f\u043e IEEE 754; \u0442\u043e\u0447\u043d\u043e\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0430\u044e\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u0432\u043e\u0438\u0447\u043d\u044b\u0435 \u0434\u0440\u043e\u0431\u0438 \u0432\u0438\u0434\u0430 \u0441\u0443\u043c\u043c\u044b \u0441\u0442\u0435\u043f\u0435\u043d\u0435\u0439 \u0434\u0432\u043e\u0439\u043a\u0438.<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.1 + 0.2 != 0.3<\/code> &#8212; \u043d\u0435 \u043e\u0448\u0438\u0431\u043a\u0430, \u0430 \u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0435 \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0439 \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u044b; \u043f\u0435\u0447\u0430\u0442\u044c \u0441 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%.17f<\/code> \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u0440\u0430\u0441\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u0432 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0445 \u0446\u0438\u0444\u0440\u0430\u0445.<\/li>\n<li>\u0414\u0440\u043e\u0431\u043d\u044b\u0435 \u0447\u0438\u0441\u043b\u0430 \u043d\u0435\u043b\u044c\u0437\u044f \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u0447\u0435\u0440\u0435\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">==<\/code>; \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0439\u0442\u0435 \u043f\u043e \u0431\u043b\u0438\u0437\u043e\u0441\u0442\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">fabs(a - b) &lt; eps<\/code>, \u043f\u043e\u0434\u0431\u0438\u0440\u0430\u044f \u044d\u043f\u0441\u0438\u043b\u043e\u043d \u043f\u043e\u0434 \u043c\u0430\u0441\u0448\u0442\u0430\u0431 \u0447\u0438\u0441\u0435\u043b.<\/li>\n<li>\u041f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code> &#8212; \u0440\u0430\u0434\u0438 \u043f\u0430\u043c\u044f\u0442\u0438, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code> &#8212; \u0440\u0435\u0434\u043a\u043e \u0438 \u0431\u0435\u0437 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0439 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u043c\u043e\u0441\u0442\u0438 (\u043d\u0430 ARM \u043e\u043d \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0432\u043f\u0430\u0434\u0430\u0442\u044c \u0441 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>).<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">printf<\/code> \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%f<\/code>\/<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%e<\/code>\/<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%g<\/code> \u0434\u043b\u044f <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%Lf<\/code> \u0434\u043b\u044f <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">long double<\/code>; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">nan<\/code> \u043d\u0435 \u0440\u0430\u0432\u0435\u043d \u0441\u0435\u0431\u0435, \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0439\u0442\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">isnan<\/code>\/<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">isinf<\/code>.<\/li>\n<\/ul>\n<h2 id=\"s7\">\u0413\u0434\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \/ \u0441\u0432\u044f\u0437\u044c \u0441 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u043e\u0439<\/h2>\n<p>\u041f\u043b\u0430\u0432\u0430\u044e\u0449\u0430\u044f \u0442\u043e\u0447\u043a\u0430 \u0432\u0441\u043f\u043b\u044b\u0432\u0430\u0435\u0442 \u043f\u043e\u0447\u0442\u0438 \u0432 \u043b\u044e\u0431\u043e\u0439 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0435 \u0441 \u0440\u0430\u0441\u0447\u0435\u0442\u0430\u043c\u0438: \u0444\u0438\u043d\u0430\u043d\u0441\u043e\u0432\u044b\u0435 \u0441\u0443\u043c\u043c\u044b, \u0433\u0440\u0430\u0444\u0438\u043a\u0430, \u0444\u0438\u0437\u0438\u043a\u0430, \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0430, \u043c\u0435\u0442\u0440\u0438\u043a\u0438. \u041e\u0448\u0438\u0431\u043a\u0430 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code> \u0447\u0435\u0440\u0435\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">==<\/code> &#8212; \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0431\u0430\u0433 \u043d\u043e\u0432\u0438\u0447\u043a\u0430: \u0442\u0435\u0441\u0442 \u00ab\u0441\u0443\u043c\u043c\u0430 \u0441\u043e\u0448\u043b\u0430\u0441\u044c\u00bb \u043f\u0440\u043e\u0445\u043e\u0434\u0438\u0442 \u043d\u0430 \u0431\u0443\u043c\u0430\u0433\u0435 \u0438 \u043f\u0430\u0434\u0430\u0435\u0442 \u0432 \u043a\u043e\u0434\u0435. \u041f\u043e\u043d\u0438\u043c\u0430\u043d\u0438\u0435 IEEE 754, \u044d\u043f\u0441\u0438\u043b\u043e\u043d-\u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f \u0438 \u0441\u043f\u0435\u0446\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043e\u0442\u0434\u0435\u043b\u044f\u0435\u0442 \u0440\u0430\u0431\u043e\u0447\u0438\u0439 \u0440\u0430\u0441\u0447\u0435\u0442 \u043e\u0442 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c \u0431\u0430\u0433\u0430.<\/p>\n<div class=\"oj-cta\" style=\"background:#fbf4e4;border-left:4px solid #c9962b;border-radius:8px;padding:16px 20px;margin:24px 0\">\n<p style=\"margin:0 0 8px\"><strong>\u041e\u0441\u0432\u043e\u0439\u0442\u0435 \u0442\u0435\u043c\u0443 \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435<\/strong><\/p>\n<p>\u0420\u0430\u0437\u043e\u0431\u0440\u0430\u0442\u044c\u0441\u044f \u0441 \u0442\u0438\u043f\u0430\u043c\u0438, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0447\u0438\u0441\u0435\u043b \u0438 \u043f\u043e\u0434\u0432\u043e\u0434\u043d\u044b\u043c\u0438 \u043a\u0430\u043c\u043d\u044f\u043c\u0438 C \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435 \u043f\u043e\u043c\u043e\u0433\u0430\u0435\u0442 \u043a\u0443\u0440\u0441 <a href=\"https:\/\/otus.ru\/lessons\/cpp-basic\/?int_article=double-i-typizacia-dannyh-v-c&amp;int_place=article&amp;int_variant=v1\">\u00abC++ Developer. Basic\u00bb<\/a>: C \u0438 C++ \u0434\u0435\u043b\u044f\u0442 \u043e\u0434\u043d\u0443 \u043c\u043e\u0434\u0435\u043b\u044c \u0442\u0438\u043f\u043e\u0432 \u0438 \u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u043a\u0443 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u0438. \u041f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u0444\u043e\u0440\u043c\u0430\u0442 \u0437\u0430\u043d\u044f\u0442\u0438\u0439 \u0438 \u0442\u0435\u043c\u044b \u0432\u0436\u0438\u0432\u0443\u044e \u043c\u043e\u0436\u043d\u043e \u043d\u0430 <a href=\"https:\/\/otus.ru\/events\/?int_article=double-i-typizacia-dannyh-v-c&amp;int_place=article&amp;int_variant=v1\">\u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0445 \u0443\u0440\u043e\u043a\u0430\u0445 Otus<\/a> &#8212; \u0442\u0430\u043c \u0436\u0435 \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u0434\u0430\u0442\u044c \u0432\u043e\u043f\u0440\u043e\u0441 \u043f\u0440\u0435\u043f\u043e\u0434\u0430\u0432\u0430\u0442\u0435\u043b\u044e.<\/p>\n<\/div>\n<h2 id=\"s8\">FAQ<\/h2>\n<p><strong>\u0427\u0435\u043c double \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0442 float \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435?<\/strong><br \/>\n<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code> \u0448\u0438\u0440\u0435 (\u043e\u0431\u044b\u0447\u043d\u043e 8 \u0431\u0430\u0439\u0442 \u043f\u0440\u043e\u0442\u0438\u0432 4) \u0438 \u0442\u043e\u0447\u043d\u0435\u0435 (\u043e\u043a\u043e\u043b\u043e 15-16 \u0437\u043d\u0430\u0447\u0430\u0449\u0438\u0445 \u0446\u0438\u0444\u0440 \u043f\u0440\u043e\u0442\u0438\u0432 7). \u0414\u043b\u044f \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0430 \u0440\u0430\u0441\u0447\u0435\u0442\u043e\u0432 \u0431\u0435\u0440\u0443\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">double<\/code>; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">float<\/code> \u0432\u044b\u0431\u0438\u0440\u0430\u044e\u0442, \u043a\u043e\u0433\u0434\u0430 \u0432\u0430\u0436\u0435\u043d \u043e\u0431\u044a\u0435\u043c \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043c\u0430\u0441\u0441\u0438\u0432\u0430\u0445 \u0434\u0430\u043d\u043d\u044b\u0445.<\/p>\n<p><strong>\u041c\u043e\u0436\u043d\u043e \u043b\u0438 \u0445\u0440\u0430\u043d\u0438\u0442\u044c \u0434\u0435\u043d\u044c\u0433\u0438 \u0432 double?<\/strong><br \/>\n\u041d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e: \u0438\u0437-\u0437\u0430 \u0434\u0432\u043e\u0438\u0447\u043d\u043e\u0433\u043e \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0443\u043c\u043c\u044b \u0432\u0440\u043e\u0434\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">0.1<\/code> \u043d\u0435 \u0442\u043e\u0447\u043d\u044b, \u0438 \u043d\u0430 \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043e\u0431\u044a\u0435\u043c\u0430\u0445 \u043a\u043e\u043f\u044f\u0442\u0441\u044f \u0440\u0430\u0441\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f. \u0414\u043b\u044f \u0434\u0435\u043d\u0435\u0433 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0446\u0435\u043b\u044b\u0435 \u0447\u0438\u0441\u043b\u0430 \u0432 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u0445 \u0435\u0434\u0438\u043d\u0438\u0446\u0430\u0445 (\u043a\u043e\u043f\u0435\u0439\u043a\u0438, \u0446\u0435\u043d\u0442\u044b) \u0438\u043b\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0434\u0435\u0441\u044f\u0442\u0438\u0447\u043d\u044b\u0435 \u0442\u0438\u043f\u044b\/\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438.<\/p>\n<p><strong>\u041a\u0430\u043a\u043e\u0439 \u044d\u043f\u0441\u0438\u043b\u043e\u043d \u0431\u0440\u0430\u0442\u044c \u0434\u043b\u044f \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f?<\/strong><br \/>\n\u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043d\u0435\u0442. \u0414\u043b\u044f \u0447\u0438\u0441\u0435\u043b \u043f\u043e\u0440\u044f\u0434\u043a\u0430 \u0435\u0434\u0438\u043d\u0438\u0446\u044b \u0447\u0430\u0441\u0442\u043e \u0431\u0435\u0440\u0443\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">1e-9<\/code>, \u043d\u043e \u0434\u043b\u044f \u043e\u0447\u0435\u043d\u044c \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u0438\u043b\u0438 \u043c\u0430\u043b\u044b\u0445 \u0432\u0435\u043b\u0438\u0447\u0438\u043d \u043f\u043e\u0440\u043e\u0433 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u044e\u0442 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0441\u0430\u043c\u0438\u0445 \u0447\u0438\u0441\u0435\u043b; \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">&lt;float.h&gt;<\/code> \u0435\u0441\u0442\u044c <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">DBL_EPSILON<\/code> \u043a\u0430\u043a \u043e\u0442\u043f\u0440\u0430\u0432\u043d\u0430\u044f \u0442\u043e\u0447\u043a\u0430.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0427\u0438\u0441\u043b\u043e \u0441 \u043f\u043b\u0430\u0432\u0430\u044e\u0449\u0435\u0439 \u0442\u043e\u0447\u043a\u043e\u0439 \u0432 C &#8212; \u044d\u0442\u043e \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u043d\u043e\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0447\u0438\u0441\u043b\u0430 \u043f\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0443 IEEE 754: \u0437\u043d\u0430\u043a, \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u0430 \u0438 \u043f\u043e\u0440\u044f\u0434\u043e\u043a (\u044d\u043a\u0441\u043f\u043e\u043d\u0435\u043d\u0442\u0430), \u0443\u043f\u0430\u043a\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0432 \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e \u0431\u0438\u0442. \u041a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e \u0442\u0443\u0442 &#8212; \u00ab\u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u043d\u043e\u0435\u00bb: \u0434\u0430\u043b\u0435\u043a\u043e \u043d\u0435 \u043a\u0430\u0436\u0434\u0430\u044f \u0434\u0435\u0441\u044f\u0442\u0438\u0447\u043d\u0430\u044f \u0434\u0440\u043e\u0431\u044c \u0443\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0432 \u0434\u0432\u043e\u0438\u0447\u043d\u0443\u044e \u043c\u0430\u043d\u0442\u0438\u0441\u0441\u0443 \u0442\u043e\u0447\u043d\u043e, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 0.1 + 0.2 \u0432 C \u043d\u0435 \u0440\u0430\u0432\u043d\u043e 0.3. \u041d\u0438\u0436\u0435 \u0440\u0430\u0437\u0431\u0435\u0440\u0435\u043c \u0442\u0440\u0438 \u0442\u0438\u043f\u0430 (float, [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":6944,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[91,65],"class_list":["post-6943","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-polza","tag-c-3","tag-programmirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0430\u0437\u0431\u0438\u0440\u0430\u0435\u043c float, double \u0438 long double \u0432 C: \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442 IEEE 754, \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f, \u043f\u043e\u0447\u0435\u043c\u0443 \u043d\u0435\u043b\u044c\u0437\u044f \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u0447\u0435\u0440\u0435\u0437 ==, \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b printf, inf \u0438 nan.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"A. 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