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msvcrt: Reimplement _chgsign(). 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-11-16 15:04:00 +01:00
parent 4619140b1c
commit dbda71f74d
1 changed files with 6 additions and 4 deletions
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10
dlls/msvcrt/math.c
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@ -170,8 +170,9 @@ int CDECL MSVCRT__set_FMA3_enable(int flag)
*/
float CDECL MSVCRT__chgsignf( float num )
{
/* FIXME: +-infinity,Nan not tested */
return -num;
union { float f; UINT32 i; } u = { num };
u.i ^= 0x80000000;
return u.f;
}
/*********************************************************************
@ -1786,8 +1787,9 @@ double CDECL MSVCRT__cabs(struct MSVCRT__complex num)
*/
double CDECL MSVCRT__chgsign(double num)
{
/* FIXME: +-infinity,Nan not tested */
return -num;
union { double f; UINT64 i; } u = { num };
u.i ^= 1ull << 63;
return u.f;
}
/*********************************************************************