Compute the floating point remainder
#include <math.h> double remquo( double x, double y, int *quo ); float remquof( float x, float y, int *quo ); long double remquol( long double x, long double y, int *quo );
The remquo(), remquof(), and remquol() functions compute the floating-point remainder of the division operation x / y, as remainder() does. Additionally, they store the sign and at least the three of the last bits of x / y in the location that quo points to, sufficient to determine the octant of the result within a period.
The behavior of remquo() is independent of the rounding mode.
To check for error situations, use feclearexcept() and fetestexcept():
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, and a domain error occurs. If x or y is NaN, the functions return NaN.
Safety: | |
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Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |