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fmod(3)                  BSD Library Functions Manual                  fmod(3)


NAME

     fmod -- floating-point remainder function


SYNOPSIS

     #include <math.h>

     double
     fmod(double x, double y);

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

     float
     fmodf(float x, float y);


DESCRIPTION

     The fmod() functions compute the floating-point remainder of x/ y.

     Specifically, the 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 magni-
     tude less than the magnitude of y.


SPECIAL VALUES

     fmod(+-0, y) returns +-0 if y is neither 0 nor NaN.

     fmod(x, y) returns a NaN and raises the "invalid" floating-point excep-
     tion for x infinite or y zero.

     fmod(x, +-infinity) returns x for x not infinite.


VECTOR OPERATIONS

     If you need to apply the fmod() functions to SIMD vectors or arrays,
     using the following functions provided by the Accelerate.framework may
     give significantly better performance:

     #include <Accelerate/Accelerate.h>

     vFloat vfmodf(vFloat x, vFloat y);
     void vvfmodf(float *z, const float *y, const float *x, const int *n);
     void vvfmod(double *z, const double *y, const double *x, const int *n);


SEE ALSO

     math(3)


STANDARDS

     The fmod() functions conform to ISO/IEC 9899:2011.

BSD                            December 11, 2006                           BSD

Mac OS X 10.9.1 - Generated Wed Jan 8 06:17:55 CST 2014
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