freebsd man page for ceil

CEIL(3) 						   BSD Library Functions Manual 						   CEIL(3)

NAME
     ceil, ceilf, ceill -- smallest integral value greater than or equal to x

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     ceil(double x);

     float
     ceilf(float x);

     long double
     ceill(long double x);

DESCRIPTION
     The ceil(), ceilf() and ceill() functions return the smallest integral value greater than or equal to x, expressed as a floating-point num-
     ber.

SEE ALSO
     abs(3), fabs(3), floor(3), ieee(3), math(3), rint(3), round(3), trunc(3)

STANDARDS
     The ceil() function conforms to ISO/IEC 9899:1990 (``ISO C90'').  The ceilf() and ceill() functions conform to ISO/IEC 9899:1999
     (``ISO C99'').

BSD
								 January 13, 2005							       BSD