CrossWorks for ARM User Guide

fmodSynopsisDescriptionFast math librarybehaviorIEC 60559 mathlibrary behaviorPortability#include double fmod(double x, double y);fmod computes the floating-point remainder of x divided by y. fmod returns the valuex - ny, for some integer n such that, if y is nonzero, the result has the same sign as x andmagnitude less than the magnitude of y.If y = 0, fmod returns zero and errno is set to EDOM.fmod(0, y) is 0 for y not zero.fmod(Infinity, y) is NaN and raises the “invalid” floating-point exception.fmod(x, 0) is NaN and raises the “invalid” floating-point exception.fmod(x, Infinity) is x for x not infinite.fmod conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).fmodfSynopsisDescriptionFast math librarybehaviorIEC 60559 mathlibrary behaviorPortability#include float fmod(float x, float y);fmod computes the floating-point remainder of x divided by y. fmod returns the valuex - ny, for some integer n such that, if y is nonzero, the result has the same sign as x andmagnitude less than the magnitude of y.If y = 0, fmodf returns zero and errno is set to EDOM.fmodf(0, y) is 0 for y not zero.fmodf(Infinity, y) is NaN and raises the “invalid” floating-point exception.fmodf(x, 0) is NaN and raises the “invalid” floating-point exception.fmodf(x, Infinity) is x for x not infinite.fmodf conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).frexpSynopsisDescription#include double frexp(double x, int *exp);frexp breaks a floating-point number into a normalized fraction and an integral powerof 2.Chapter 28 - Mathematics265