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(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOceil(3M), feclearexcept(3M), fetestexcept(3M), isnan(3M),
math.h(3HEAD), attributes(5), standards(5)SunOS 5.10 12 Jul 2006 floor(3M)