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floor(3) [opendarwin man page]

FLOOR(3)						   BSD Library Functions Manual 						  FLOOR(3)

NAME
floor -- round to largest integral value not greater than x 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. SPECIAL VALUES
floor(+-0) returns +-0. floor(+-infinity) returns +-infinity. SEE ALSO
abs(3), ceil(3), fabs(3), ieee(3), rint(3), math(3) STANDARDS
The floor() and floorf() functions conform to ISO/IEC 9899:1999(E). BSD
November 20, 2002 BSD

Check Out this Related Man Page

floor(3M)						  Mathematical Library Functions						 floor(3M)

NAME
floor, floorf, floorl - floor function SYNOPSIS
cc [ 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 ALSO
ceil(3M), feclearexcept(3M), fetestexcept(3M), isnan(3M), math.h(3HEAD), attributes(5), standards(5) SunOS 5.10 1 Sep 2002 floor(3M)
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