newlib-cygwin/newlib/libm/mathfp/s_ispos.c

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2000-02-18 03:39:52 +08:00
/* @(#)z_ispos.c 1.0 98/08/13 */
/******************************************************************
* Numtest
*
* Input:
* x - pointer to a floating point value
*
* Output:
* An integer that indicates if the number is positive.
*
* Description:
* This routine returns an integer that indicates if the number
* passed in is positive (1) or negative (0).
*
*****************************************************************/
#include "fdlibm.h"
#include "zmath.h"
#ifndef _DOUBLE_IS_32BITS
int ispos (double x)
{
__uint32_t hx;
GET_HIGH_WORD (hx, x);
if (hx & 0x80000000)
return (0);
else
return (1);
}
#endif /* _DOUBLE_IS_32BITS */