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msvcrt: Reimplement _finite(). 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-11-16 12:17:52 +01:00
parent fd51f229f6
commit 9f088d019b
1 changed files with 4 additions and 2 deletions
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6
dlls/msvcrt/math.c
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@ -235,7 +235,8 @@ int CDECL MSVCRT__fpclassf( float num )
*/
int CDECL MSVCRT__finitef( float num )
{
return finitef(num) != 0; /* See comment for _isnan() */
union { float f; UINT32 i; } u = { num };
return (u.i & 0x7fffffff) < 0x7f800000;
}
/*********************************************************************
@ -2138,7 +2139,8 @@ double CDECL MSVCRT__copysign(double num, double sign)
*/
int CDECL MSVCRT__finite(double num)
{
return isfinite(num) != 0; /* See comment for _isnan() */
union { double f; UINT64 i; } u = { num };
return (u.i & ~0ull >> 1) < 0x7ffull << 52;
}
/*********************************************************************