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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) */