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ceil(3)                  BSD Library Functions Manual                  ceil(3)


NAME

     ceil -- round to smallest integral value not less than x


SYNOPSIS

     #include <math.h>

     double
     ceil(double x);

     long double
     ceill(long double x);

     float
     ceilf(float x);


DESCRIPTION

     The ceil() functions return the smallest integral value greater than or
     equal to x.


SPECIAL VALUES

     ceil(+-0) returns +-0.

     ceil(+-infinity) returns +-infinity.


VECTOR OPERATIONS

     If you need to apply the ceil() function to SIMD vectors or arrays, using
     the following functions provided by the Accelerate.framework may give
     significantly better performance:

     #include <Accelerate/Accelerate.h>

     vFloat vceilf(vFloat x);
     void vvceilf(float *y, const float *x, const int *n);
     void vvceil(double *y, const double *x, const int *n);


SEE ALSO

     floor(3), round(3), trunc(3), math(3)


STANDARDS

     The ceil() functions conform to ISO/IEC 9899:2011.

BSD                            December 11, 2006                           BSD

Mac OS X 10.9.1 - Generated Tue Jan 7 07:36:05 CST 2014
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