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carg
Langue: ja
Version: 2002-07-28 (openSuse - 09/10/07)
Section: 3 (Bibliothèques de fonctions)
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carg, cargf, cargl - Ê£ÁÇ¿ô¤ÎÊгѤò·×»»¤¹¤ë½ñ¼°
#include <complex.h>double carg(double complex z);
float cargf(float complex z);
long double cargl(long double complex z);
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Ê£ÁÇ¿ô¤Ï 2¤Ä¤Î¼Â¿ôÃͤ«¤é¤Ê¤ëºÂɸ¤Çɽ¤¹¤³¤È¤¬¤Ç¤¤ë¡£ ľ¸òºÂɸ¤ò»È¤Ã¤Æ¡¢ z = x+I*y ¤È½ñ¤¯¤³¤È¤¬¤Ç¤¤ë¡£ ¤³¤Î¤È¤¡¢ x = creal(z), y = cimag(z) ¤Ç¤¢¤ë¡£¤Þ¤¿¡¢¶ËºÂɸ¤ò»È¤Ã¤Æ¡¢ z = r*cexp(I*a) ¤È½ñ¤¯¤³¤È¤â¤Ç¤¤ë¡£ r = cabs(z) ¤Ï¡ÖȾ·Â¡×¡¢¡Ö·¸¿ô¡×¤È¸Æ¤Ð¤ì¡¢ z ¤ÎÀäÂÐÃͤǤ¢¤ë¡£ a = carg(z) ¤Ï¡Ö°ÌÁê³Ñ¡×¤È¤¤¤¤¡¢ z ¤ÎÊгѤǤ¢¤ë¡£
¼¡¤Î´Ø·¸¤¬À°Íý¤¹¤ë: tan(carg(z)) = cimag(z) / creal(z)
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