CEIL(3) BSD 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() func-
tions return the largest integral value less than or equal to x.
SEE ALSO
abs(3), fabs(3), math(3), nextafter(3), rint(3)
STANDARDS
The described functions conform to ISO/IEC 9899:1999 (``ISO C99'').
BSD
September 18, 2011 BSD
