Alexandre Julliard : msvcrt: Use the __expo2()/__expo2f() implementation from the bundled musl library.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: bbc8c347356e19c39572061f295818d29f341ec4
URL:    https://gitlab.winehq.org/wine/wine/-/commit/bbc8c347356e19c39572061f295818d...

Author: Alexandre Julliard 
Date:   Mon Apr  3 17:39:15 2023 +0200

msvcrt: Use the __expo2()/__expo2f() implementation from the bundled musl library.

---

dlls/msvcrt/math.c | 21 ++-------------------
 1 file changed, 2 insertions(+), 19 deletions(-)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 425eccb9c9e..f368790f3d4 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -983,16 +983,7 @@ float CDECL cosf( float x )
     }
 }

-/* Copied from musl: src/math/__expo2f.c */
-static float __expo2f(float x, float sign)
-{
-    static const int k = 235;
-    static const float kln2 = 0x1.45c778p+7f;
-    float scale;
-
-    *(UINT32*)&scale = (UINT32)(0x7f + k/2) << 23;
-    return expf(x - kln2) * (sign * scale) * scale;
-}
+extern float __expo2f(float x, float sign);

/*********************************************************************
  *      coshf (MSVCRT.@)
@@ -2237,15 +2228,7 @@ double CDECL cos( double x )
     }
 }

-static double __expo2(double x, double sign)
-{
-    static const int k = 2043;
-    static const double kln2 = 0x1.62066151add8bp+10;
-    double scale;
-
-    *(UINT64*)&scale = (UINT64)(0x3ff + k / 2) << 52;
-    return exp(x - kln2) * (sign * scale) * scale;
-}
+extern double __expo2(double x, double sign);

/*********************************************************************
  *		cosh (MSVCRT.@)