abs

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Langue: ja

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Version: 17 December 2000 (openSuse - 09/10/07)

Section: 3 (Bibliothèques de fonctions)

Sommaire

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abs, labs, llabs, imaxabs - À°¿ô¤ÎÀäÂÐÃͤò·×»»¤¹¤ë

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#include <stdlib.h>



int abs(int j);




long int labs(long int j);




long long int llabs(long long int j);



#include <inttypes.h>



intmax_t imaxabs(intmax_t j);

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abs() ´Ø¿ô¤Ï¡¢À°¿ô¤Î°ú¿ô j ¤ÎÀäÂÐÃͤò·×»»¤¹¤ë¡£ labs(), llabs(), imaxabs() ´Ø¿ô¤Ï¡¢ ¤½¤ì¤¾¤ì¤Î´Ø¿ô¤Î·¿¤Ë±þ¤¸¤¿°ú¿ô j ¤ÎÀäÂÐÃͤò·×»»¤¹¤ë¡£

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SVr4, POSIX.1-2001, 4.3BSD, C99. C89 ¤Ï abs() ´Ø¿ô¤È labs() ´Ø¿ô¤Î¤ß¤ò´Þ¤ó¤Ç¤¤¤ë¡£ llabs() ´Ø¿ô¤È imaxabs() ´Ø¿ô¤Ï C99 ¤ÇÄɲ䵤줿¡£

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llabs() ´Ø¿ô¤Ï¥Ð¡¼¥¸¥ç¥ó 2.0 ¤«¤é glibc ¤Ë´Þ¤Þ¤ì¤ë¤è¤¦¤Ë¤Ê¤Ã¤¿¤¬¡¢ libc5 ¤ä libc4 ¤Ë¤Ï¤Ê¤¤¡£ imaxabs() ´Ø¿ô¤Ï ¥Ð¡¼¥¸¥ç¥ó 2.1.1 ¤«¤é glibc ¤Ë´Þ¤Þ¤ì¤ë¤è¤¦¤Ë¤Ê¤Ã¤¿¡£

llabs() ¤¬Àë¸À¤µ¤ì¤ë¤¿¤á¤Ë¤Ï¡¢É¸½à¥Ø¥Ã¥À¤ò include ¤¹¤ëÁ°¤Ë _ISOC99_SOURCE ¤« _ISOC9X_SOURCE(¤É¤Á¤é¤«¤Ï glibc ¤Î ¥Ð¡¼¥¸¥ç¥ó¤Ë°Í¸¤¹¤ë)¤ò define ¤·¤Æ¤ª¤¯É¬Íפ¬¤¢¤ë¡£

GCC ¤Ï abs() ¤È labs() ¤ò¥Ó¥ë¥É¥¤¥ó´Ø¿ô¤È¤·¤Æ°·¤¦¡£ GCC 3.0 ¤Ï llabs() ¤È imaxabs() ¤â¥Ó¥ë¥É¥¤¥ó¤È¤·¤Æ°·¤¦¡£

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cabs(3), ceil(3), fabs(3), floor(3), rint(3)