reactos/sdk/lib/crt/float/chgsign.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* FILE: lib/sdk/crt/float/chgsign.c
* PURPOSE: Unknown
* PROGRAMER: Unknown
* UPDATE HISTORY:
* 25/11/05: Added license header
*/
#include <precomp.h>
#include <internal/ieee.h>
/*
* @implemented
*/
double _chgsign( double __x )
{
union
{
double* __x;
double_s *x;
} u;
u.__x = &__x;
if ( u.x->sign == 1 )
u.x->sign = 0;
else
u.x->sign = 1;
return __x;
}