floor¶

Synopsis¶

#include <math.h>

double floor(double x);

float floorf(float x);

long double floorl(long double x);

Status¶

Partially implemented

Conformance¶

IEEE Std 1003.1-2017

Description¶

These functions shall compute the largest integral value not greater than x.

Return value¶

The result shall have the same sign as x.

Upon successful completion, these functions shall return the largest integral value not greater than x, expressed as a double, float, or long double, as appropriate for the return type of the function.

If x is NaN, a NaN shall be returned.
If x is ±0 or ±Inf, x shall be returned.

Errors¶

No errors are defined.

Tests¶

Untested

Known bugs¶

None