floor(), floorf()

round to largest integral value not greater than x 

Function

SYNOPSIS

#include <math.h>

double floor(double x)

float floorf(float x)

DESCRIPTION

The floor() and floorf() functions return the largest integral value less than or equal to x.

The floorf() function is a single-precision version of function().

PARAMETERS

x 

Is the number whose floor to compute.

RETURN VALUES

The floor() function returns the largest integral value not greater than x, expressed as a double. If x is NaN, NaN is returned. If the return value would overflow, -HUGE_VAL is returned.

CONFORMANCE

floor(): ANSI/ISO 9899-1990

floorf(): MKS Toolkit UNIX APIs extension

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

None.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
abs(), ceil(), fabs(), ieee(), math(), rint()

MKS Toolkit 9.2 Documentation Build 16.