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NAME

ceil — smallest integral value not greater than x

SYNOPSIS

#include <math.h>

double
ceil(double x);

RETURN VALUES

The ceil() function returns the smallest integral value expressed as a double.

SEE ALSO

abs(3), fabs(3), floor(3), rint(3), ieee(3), math.3

STANDARDS

The ceil() function conforms to ANSI X3.159-1989 (“ANSI C89”).