Linux Certif

Toute la documentation sur la certification Linux LPI

fenv

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feclearexcept, fegetexceptflag, feraiseexcept, fesetexceptflag, fetestexcept, fegetenv, fegetround, feholdexcept, fesetround, fesetenv, feupdateenv, feenableexcept, fedisableexcept, fegetexcept - ÉâÆ°¾®¿ôÅÀ¤Î´Ý¤á¤ÈÎã³°¤Î¼è¤ê°·¤¤

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#include <fenv.h>



int feclearexcept(int excepts);




int fegetexceptflag(fexcept_t *flagp, int excepts);




int feraiseexcept(int excepts);




int fesetexceptflag(const fexcept_t *flagp, int excepts);




int fetestexcept(int excepts);



int fegetround(void);




int fesetround(int rounding_mode);



int fegetenv(fenv_t *envp);




int feholdexcept(fenv_t *envp);




int fesetenv(const fenv_t *envp);




int feupdateenv(const fenv_t *envp);

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IEC 60559 (IEC 559:1989), ANSI/IEEE 854, C99.

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glibc ¤Ç¤ÎÃí°Õ

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#define _GNU_SOURCE




#include <fenv.h>



int feenableexcept(int excepts);




int fedisableexcept(int excepts);




int fegetexcept(void);

feenebleexcept() ´Ø¿ô¤È fedisableexcept() ´Ø¿ô¤Ï excepts ¤Ë¤è¤Ã¤Æɽ¸½¤µ¤ì¤ë³ÆÎã³°¤Î¥È¥é¥Ã¥×¤òÍ­¸ú (̵¸ú) ¤Ë¤¹¤ë¡£ À®¸ù¤·¤¿¾ì¹ç¤ÏľÁ°¤ËÍ­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤¿Îã³°¤Î¥»¥Ã¥È¤òÊÖ¤¹¡£ ¼ºÇÔ¤·¤¿¾ì¹ç¤Ï -1 ¤òÊÖ¤¹¡£ fegetexcept() ´Ø¿ô¤Ï¸½ºßÍ­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤ëÎã³°Á´¤Æ¤«¤é¤Ê¤ë¥»¥Ã¥È¤òÊÖ¤¹¡£

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feature_test_macros(7)