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EXPM1
Section: Linux Programmer's Manual (3)Updated: September 16, 1995
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expm1, log1p - °ú¿ô¤Î»Ø¿ô¥Þ¥¤¥Ê¥¹ 1 ¤È¡¢°ú¿ô¥×¥é¥¹ 1 ¤ÎÂпô¤òÍ¿¤¨¤ë½ñ¼°
#include <math.h> double expm1 ( double x ); double log1p ( double x );
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expm1(x) ¤Ï `exp(x) - 1' ¤ÈÅù¤·¤¤ÃͤòÊÖ¤¹¡£¤³¤Î´Ø¿ô¤Ï x ¤¬ 0 ¤Ë¶á¤¯¡¢ `exp (x) - 1' ¤¬·åÍî¤Á¤Î¤¿¤á¤ËÉÔÀµ³Î¤È¤Ê¤ë¤è¤¦¤Ê¾ì¹ç¤Ç¤â¡¢Àµ³Î¤Ê ÃͤòÊÖ¤¹¤è¤¦¤Ë·×»»¤µ¤ì¤ë¡£log1p(x) ¤Ï `log ( 1 + x)' ¤ÈÅù¤·¤¤ÃͤòÃͤòÊÖ¤¹¡£¤³¤Î´Ø¿ô¤Ï x ¤¬ 0 ¤Ë¶á¤¤¾ì¹ç¤Ç¤âÀµ³Î¤ÊÃͤòÊÖ¤¹¤è¤¦¤Ë·×»»¤µ¤ì¤ë¡£
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exp(3), log(3)