fmod, fmodf
Calculates the floating-point remainder.
double fmod( double x, double y ); float fmod( float x, float y ); // C++ only long double fmod( long double x, long double y ); // C++ only float fmodf( float x, float y );
Parameters
- x, y
-
Floating-point values.
fmod returns the floating-point remainder of x / y. If the value of y is 0.0, fmod returns a quiet NaN. For information about representation of a quiet NaN by the printf family, see printf.
The fmod function calculates the floating-point remainder f of x / y such that x = i * y + f, where i is an integer, f has the same sign as x, and the absolute value of f is less than the absolute value of y.
C++ allows overloading, so you can call overloads of fmod. In a C program, fmod always takes two doubles and returns a double.
| Function | Required header | Compatibility |
|---|---|---|
| fmod, fmodf | <math.h> | ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
For additional compatibility information, see Compatibility in the Introduction.
