msvcrt: Import floorf implementation from musl.
Signed-off-by: Piotr Caban <piotr@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -827,10 +827,31 @@ float CDECL ceilf( float x )
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/*********************************************************************
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* floorf (MSVCRT.@)
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*
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* Copied from musl: src/math/floorf.c
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*/
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float CDECL floorf( float x )
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{
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return unix_funcs->floorf(x);
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union {float f; UINT32 i;} u = {x};
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int e = (int)(u.i >> 23 & 0xff) - 0x7f;
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UINT32 m;
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if (e >= 23)
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return x;
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if (e >= 0) {
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m = 0x007fffff >> e;
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if ((u.i & m) == 0)
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return x;
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if (u.i >> 31)
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u.i += m;
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u.i &= ~m;
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} else {
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if (u.i >> 31 == 0)
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return 0;
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else if (u.i << 1)
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return -1;
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}
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return u.f;
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}
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/*********************************************************************
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@ -281,14 +281,6 @@ static double CDECL unix_floor( double x )
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return floor( x );
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}
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/*********************************************************************
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* floorf
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*/
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static float CDECL unix_floorf( float x )
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{
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return floorf( x );
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}
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/*********************************************************************
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* fma
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*/
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@ -712,7 +704,6 @@ static const struct unix_funcs funcs =
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unix_expm1,
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unix_expm1f,
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unix_floor,
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unix_floorf,
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unix_fma,
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unix_fmaf,
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unix_fmod,
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@ -44,7 +44,6 @@ struct unix_funcs
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double (CDECL *expm1)(double x);
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float (CDECL *expm1f)(float x);
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double (CDECL *floor)(double x);
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float (CDECL *floorf)(float x);
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double (CDECL *fma)(double x, double y, double z);
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float (CDECL *fmaf)(float x, float y, float z);
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double (CDECL *fmod)(double x, double y);
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