csqrt

Autres langues

Langue: ja

Autres versions - même langue

Version: 2002-07-28 (openSuse - 09/10/07)

Section: 3 (Bibliothèques de fonctions)

̾Á°

csqrt, csqrtf, csqrtl - Ê£ÁÇ¿ô¤ÎÊ¿Êýº¬

½ñ¼°

#include <complex.h>

double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);

-lm ¤Ç¥ê¥ó¥¯¤¹¤ë¡£

ÀâÌÀ

Í¿¤¨¤é¤ì¤¿Ê£ÁÇ¿ô¤ÎÊ¿Êýº¬¤ò·×»»¤¹¤ë¡£ ⤷¡¢Ê¿Êýº¬¤Î¤¦¤Á¼Â¿ôÉô¤¬ÈóÉé¤ÎÃͤòÊÖ¤¹¡£ ¼Â¼´¤ÎÉé¤ÎÉôʬ¤Ë±è¤Ã¤Æʬ»ÞÀÚÃÇ (branch cut) ¤¬¤¢¤ë¡£ (¤Ä¤Þ¤ê¡¢ eps ¤ò¾®¤µ¤ÊÀµ¤Î¼Â¿ô¤È¤·¤¿¾ì¹ç¡¢ csqrt(-1+eps*I) ¤¬ I ¤Ë¶áÉÕ¤¤¤Æ¤¤¤­¡¢°ìÊý csqrt(-1-eps*I) ¤Ï -I ¤Ë¶áÉÕ¤¤¤Æ¤¤¤¯¡¢ ¤È¤¤¤¦¤³¤È¤Ç¤¢¤ë¡£)

½àµò

C99

´ØÏ¢¹àÌÜ

cabs(3), cexp(3), complex(7)