Linux / Unix Command: ceil

Command Library

NAME

ceil, ceilf, ceill - ceiling function: smallest integral value not less than argument  

SYNOPSIS

#include <math.h>

double ceil(double x);


float ceilf(float x);


long double ceill(long double x);

 

DESCRIPTION

These functions round x up to the nearest integer.  

RETURN VALUE

The rounded integer value. If x is integral or infinite, x itself is returned.  

ERRORS

No errors other than EDOM and ERANGE can occur. If x is NaN, then NaN is returned and errno may be set to EDOM.  

SEE ALSO

floor(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(3)

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