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/* @(#)z_ceilf.c 1.0 98/08/13 */
/*****************************************************************
* ceil
*
* Input:
* x - floating point value
*
* Output:
* Smallest integer greater than x.
*
* Description:
* This routine returns the smallest integer greater than x.
*
*****************************************************************/
#include "fdlibm.h"
#include "zmath.h"
float
_DEFUN (ceilf, (float),
float x)
{
float f, y;
y = modff (x, &f);
if (y == 0.0)
return (x);
else if (x > -1.0 && x < 1.0)
return (x > 0 ? 1.0 : 0.0);
else
return (x > 0 ? f + 1.0 : f);
}
#ifdef _DOUBLE_IS_32BITS
double ceil (double x)
{
return (double) ceilf ((float) x);
}
#endif /* defined(_DOUBLE_IS_32BITS) */
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