mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 23:32:06 +00:00
36 lines
676 B
C
36 lines
676 B
C
|
|
||
|
|
/* @(#)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 */
|