toolchain/gcc/newlib/libm/mathfp/s_ispos.c

   1
   2 /* @(#)z_ispos.c 1.0 98/08/13 */
   3 /******************************************************************
   4  * Numtest
   5  *
   6  * Input:
   7  *   x - pointer to a floating point value
   8  *
   9  * Output:
  10  *   An integer that indicates if the number is positive.
  11  *
  12  * Description:
  13  *   This routine returns an integer that indicates if the number
  14  *   passed in is positive (1) or negative (0).
  15  *
  16  *****************************************************************/
  17
  18 #include "fdlibm.h"
  19 #include "zmath.h"
  20
  21 #ifndef _DOUBLE_IS_32BITS
  22
  23 int ispos (double x)
  24 {
  25   __uint32_t hx;
  26
  27   GET_HIGH_WORD (hx, x);
  28
  29   if (hx & 0x80000000)
  30     return (0);
  31   else
  32     return (1);
  33 }
  34
  35 #endif /* _DOUBLE_IS_32BITS */