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FMOD(3) Library Functions Manual FMOD(3)

fmod, fmodf, fmodlfloating-point remainder function

library “libm”

#include <math.h>

double
fmod(double x, double y);

float
fmodf(float x, float y);

long double
fmodl(long double x, long double y);

The () function computes the floating-point remainder of x/ y.

The fmod(), fmodf(), and fmodl() functions return the value x-i*y, for some integer i such that, if y is non-zero, the result has the same sign as x and magnitude less than the magnitude of y. If y is zero, whether a domain error occurs or the fmod() function returns zero is implementation-defined.

math(3)

The fmod() function conforms to ANSI X3.159-1989 (“ANSI C89”).

November 12, 2013 NetBSD-9.2