FLOOR(3M) Mathematical Library Functions FLOOR(3M)

NAME

floor, floorf, floorl - floor function

SYNOPSIS

c99 [ flag... ] file... -lm [ library... ]
#include <math.h>

double floor(double x);


float floorf(float x);


long double floorl(long double x);

DESCRIPTION

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

RETURN VALUES

Upon successful completion, these functions 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 is returned.


If x is +-Inf or +-0, x is returned.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+-----------------------------+
|Interface Stability | Standard |
+----------------------------+-----------------------------+
|MT-Level | MT-Safe |
+----------------------------+-----------------------------+

SEE ALSO

math.h(3HEAD), ceil(3M), feclearexcept(3M), fetestexcept(3M),
isnan(3M), attributes(7), standards(7)

SunOS 5.11 July 12, 2006 FLOOR(3M)