FMOD(3) | Library Functions Manual | FMOD(3) |
fmod
—
floating-point remainder function
#include
<math.h>
double
fmod
(double
x, double y);
long double
fmodl
(long
double x, long double
y);
float
fmodf
(float
x, float y);
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 magnitude less than the magnitude of y.
fmod
(±0,
y) returns ±0 if y is neither 0 nor NaN.
fmod
(x,
y) returns a NaN and raises the "invalid" floating-point
exception for x infinite or y zero.
fmod
(x,
±infinity) returns x for x not infinite.
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);
The fmod
() functions conform to ISO/IEC
9899:2011.
December 11, 2006 | macOS 14.6 |