Piotr Caban : msvcrt: Import neabyintf implementation from musl.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2caca437332b95ec807dd6195ac4bd4df616f934
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=2caca437332b95ec807dd6195ac4bd4df616f934

Author: Piotr Caban <piotr at codeweavers.com>
Date:   Fri May 14 16:11:44 2021 +0200

msvcrt: Import neabyintf implementation from musl.

Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 configure             |  1 -
 configure.ac          |  1 -
 dlls/msvcrt/math.c    | 13 +++++++++++--
 dlls/msvcrt/unixlib.c | 13 -------------
 dlls/msvcrt/unixlib.h |  1 -
 include/config.h.in   |  3 ---
 6 files changed, 11 insertions(+), 21 deletions(-)

diff --git a/configure b/configure
index b6964befcc5..91f0c586c60 100755
--- a/configure
+++ b/configure
@@ -19641,7 +19641,6 @@ for ac_func in \
 	log2 \
 	log2f \
 	nearbyint \
-	nearbyintf \
 	nexttoward \
 	nexttowardf \
 	remainder \
diff --git a/configure.ac b/configure.ac
index 2e809c2e1f0..df1025aeb98 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2681,7 +2681,6 @@ AC_CHECK_FUNCS(\
 	log2 \
 	log2f \
 	nearbyint \
-	nearbyintf \
 	nexttoward \
 	nexttowardf \
 	remainder \
diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 2e827dd32c6..7fe7b9d172b 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -3426,10 +3426,19 @@ double CDECL nearbyint(double num)
 
 /*********************************************************************
  *		_nearbyintf (MSVCR120.@)
+ *
+ * Based on musl: src/math/nearbyteintf.c
  */
-float CDECL nearbyintf(float num)
+float CDECL nearbyintf(float x)
 {
-    return unix_funcs->nearbyintf( num );
+    fenv_t env;
+
+    fegetenv(&env);
+    _control87(_MCW_EM, _MCW_EM);
+    x = rintf(x);
+    feclearexcept(FE_INEXACT);
+    feupdateenv(&env);
+    return x;
 }
 
 /*********************************************************************
diff --git a/dlls/msvcrt/unixlib.c b/dlls/msvcrt/unixlib.c
index 282c11166f5..a0892e98d97 100644
--- a/dlls/msvcrt/unixlib.c
+++ b/dlls/msvcrt/unixlib.c
@@ -559,18 +559,6 @@ static double CDECL unix_nearbyint(double num)
 #endif
 }
 
-/*********************************************************************
- *      nearbyintf
- */
-static float CDECL unix_nearbyintf(float num)
-{
-#ifdef HAVE_NEARBYINTF
-    return nearbyintf(num);
-#else
-    return unix_nearbyint(num);
-#endif
-}
-
 /*********************************************************************
  *      nextafter
  */
@@ -847,7 +835,6 @@ static const struct unix_funcs funcs =
     unix_modf,
     unix_modff,
     unix_nearbyint,
-    unix_nearbyintf,
     unix_nextafter,
     unix_nextafterf,
     unix_nexttoward,
diff --git a/dlls/msvcrt/unixlib.h b/dlls/msvcrt/unixlib.h
index 6ce85c194ac..d8b5e6b3f24 100644
--- a/dlls/msvcrt/unixlib.h
+++ b/dlls/msvcrt/unixlib.h
@@ -73,7 +73,6 @@ struct unix_funcs
     double          (CDECL *modf)(double x, double *iptr);
     float           (CDECL *modff)(float x, float *iptr);
     double          (CDECL *nearbyint)(double num);
-    float           (CDECL *nearbyintf)(float num);
     double          (CDECL *nextafter)(double x, double y);
     float           (CDECL *nextafterf)(float x, float y);
     double          (CDECL *nexttoward)(double x, double y);
diff --git a/include/config.h.in b/include/config.h.in
index 2fc36aa7eda..896d44cd71e 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -504,9 +504,6 @@
 /* Define to 1 if you have the `nearbyint' function. */
 #undef HAVE_NEARBYINT
 
-/* Define to 1 if you have the `nearbyintf' function. */
-#undef HAVE_NEARBYINTF
-
 /* Define to 1 if you have the <netdb.h> header file. */
 #undef HAVE_NETDB_H