[PATCH 04/12] msvcrt: Use the coshf() implementation from the bundled musl library.

[Alexandre Julliard]

From: Alexandre Julliard

With the changes from 361143252bf23b6f29eead49a3715fdd6d552e8a.
---
 dlls/msvcrt/math.c         | 39 --------------------------------------
 libs/musl/src/math/coshf.c |  5 +++++
 2 files changed, 5 insertions(+), 39 deletions(-)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index f368790f3d4..1c6fd5d7d70 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -985,45 +985,6 @@ float CDECL cosf( float x )

extern float __expo2f(float x, float sign);

-/*********************************************************************
- *      coshf (MSVCRT.@)
- *
- * Copied from musl: src/math/coshf.c
- */
-float CDECL coshf( float x )
-{
-    UINT32 ui = *(UINT32*)&x;
-    UINT32 sign = ui & 0x80000000;
-    float t;
-
-    /* |x| */
-    ui &= 0x7fffffff;
-    x = *(float*)&ui;
-
-    /* |x| < log(2) */
-    if (ui < 0x3f317217) {
-        if (ui < 0x3f800000 - (12 << 23)) {
-            fp_barrierf(x + 0x1p120f);
-            return 1;
-        }
-        t = expm1f(x);
-        return 1 + t * t / (2 * (1 + t));
-    }
-
-    /* |x| < log(FLT_MAX) */
-    if (ui < 0x42b17217) {
-        t = expf(x);
-        return 0.5f * (t + 1 / t);
-    }
-
-    /* |x| > log(FLT_MAX) or nan */
-    if (ui > 0x7f800000)
-        *(UINT32*)&t = ui | sign | 0x400000;
-    else
-        t = __expo2f(x, 1.0f);
-    return t;
-}
-
 /*********************************************************************
  *      expf (MSVCRT.@)
  */
diff --git a/libs/musl/src/math/coshf.c b/libs/musl/src/math/coshf.c
index 2fc004682da..44f29113559 100644
--- a/libs/musl/src/math/coshf.c
+++ b/libs/musl/src/math/coshf.c
@@ -3,6 +3,7 @@
 float __cdecl coshf(float x)
 {
    union {float f; uint32_t i;} u = {.f = x};
+	uint32_t sign = u.i & 0x80000000;
    uint32_t w;
    float t;

@@ -28,6 +29,10 @@ float __cdecl coshf(float x)
    }

/* |x| > log(FLT_MAX) or nan */
+	if (w > 0x7f800000) {
+		u.i |= sign | 0x400000;
+		return u.f;
+	}
    t = __expo2f(x, 1.0f);
    return t;
 }