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
