netbsd man page for ceil

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