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/* @(#)z_fabsf.c 1.0 98/08/13 */

/******************************************************************

 * Floating-Point Absolute Value

 *

 * Input:

 *   x - floating-point number

 *

 * Output:

 *   absolute value of x

 *

 * Description:

 *   fabs computes the absolute value of a floating point number.

 *

 *****************************************************************/

#include "fdlibm.h"

#include "zmath.h"

float

_DEFUN (fabsf, (float),

        float x)

{

  switch (numtestf (x))

    {

      case NAN:

        errno = EDOM;

        return (x);

      case INF:

        errno = ERANGE;

        return (x);

      case 0:

        return (0.0);

      default:

        return (x < 0.0 ? -x : x);

    }

}

#ifdef _DOUBLE_IS_32BITS

double fabs (double x)

{

  return (double) fabsf ((float) x);

}

#endif /* defined(_DOUBLE_IS_32BITS) */