CEIL(3) |
Library Functions Manual |
CEIL(3) |
NAME
ceil, ceilf, floor, floorf — ceiling and floor
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
ceil(double x);
float
ceilf(float x);
double
floor(double x);
float
floorf(float x);
DESCRIPTION
The ceil() and ceilf() functions return the smallest integral value greater than or equal to x. Conversely, the floor() and floorf() functions return the largest integral value less than or equal to x.
STANDARDS
The described functions conform to ISO/IEC 9899:1999 (“ISO C99”).