remainder(), remainderf(), remainderl()
Compute the floating point remainder
Synopsis:
#include <math.h> double remainder( double x, double y ); float remainderf( float x, float y ); long double remainder( long double x, long double y );
Arguments:
- x
- The numerator of the division.
- y
- The denominator.
Library:
libm
Use the -l m option to qcc to link against this library.
Description:
These functions return the floating point remainder r = x - n y, where y is nonzero. The value n is the integral value nearest the exact value x/y. When |n - x/y| = ½, the value n is chosen to be even.
The behavior of remainder() is independent of the rounding mode.
Returns:
The floating point remainder r = x - ny, where y is nonzero. If x is infinite or y is zero and the other is non-NaN, these functions return NaN.
If an error occurs, these functions return 0, but this is also a valid
mathematical result.
If you want to check for errors, set
errno
to 0, call the function, and then check errno again.
These functions don't change errno if no errors occurred.
Classification:
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |