lib/sdk/crt/float/copysign.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/crt/??????
   5  * PURPOSE:     Unknown
   6  * PROGRAMER:   Unknown
   7  * UPDATE HISTORY:
   8  *              25/11/05: Added license header
   9  */
  10
  11 #include <precomp.h>
  12 #include <internal/ieee.h>
  13
  14 /*
  15  * @implemented
  16  */
  17 double _copysign (double __d, double __s)
  18 {
  19   union
  20   {
  21       double*   __d;
  22       double_s*   d;
  23   } d;
  24   union
  25   {
  26       double*   __s;
  27       double_s*   s;
  28   } s;
  29   d.__d = &__d;
  30   s.__s = &__s;
  31
  32   d.d->sign = s.s->sign;
  33
  34   return __d;
  35 }
  36