How to get the ceiling value for floating numbers? Post: 302366186

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LEARN ABOUT OPENSOLARIS

ceill

ceil(3M)						  Mathematical Library Functions						  ceil(3M)

NAME

       ceil, ceilf, ceill - ceiling value function

SYNOPSIS

       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       double ceil(double x);

       float ceilf(float x);

       long double ceill(long double x);

DESCRIPTION

       These functions compute the smallest integral value not less than x.

RETURN VALUES

       Upon  successful  completion, the ceil(), ceilf(), and ceill() functions return the smallest integral value not less than x, expressed as a
       type double, float, or long double, respectively.

       If x is NaN, a NaN is returned.

       If x is +-0 or +-Inf, x is returned.

USAGE

       The integral value returned by these functions need not be expressible as an int or long int. The return  value	should	be  tested  before
       assigning it to an integer type to avoid the undefined results of an integer overflow.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       feclearexcept(3M), fetestexcept(3M), floor(3M), isnan(3M), math.h(3HEAD), attributes(5), standards(5)

SunOS 5.11							    12 Jul 2006 							  ceil(3M)

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