ceil(), ceilf() round to smallest integral value greater than or equal to x	Function
	SYNOPSIS DESCRIPTION RETURN VALUES CONFORMANCE MULTITHREAD SAFETY LEVEL PORTING ISSUES AVAILABILITY SEE ALSO

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SYNOPSIS

#include <math.h>

double ceil(double x)

float ceilf(float x)

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DESCRIPTION

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

The ceilf() function is a single-precision version of ceil().

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RETURN VALUES

ceil() returns the rounded up value based on x.

If x is NaN, NaN is returned. If the return value would overflow, HUGE_VAL is returned.

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CONFORMANCE

ceil(): ANSI/ISO 9899-1990

ceilf(): MKS Toolkit UNIX APIs extension

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MULTITHREAD SAFETY LEVEL

MT-Safe.

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PORTING ISSUES

None.

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AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

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SEE ALSO

Functions:

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

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MKS Toolkit 9.2 Documentation Build 16.