msvcrt: Import neabyintf implementation from musl.

configure

@@ -19641,7 +19641,6 @@ for ac_func in \
 	log2 \
 	log2f \
 	nearbyint \
-	nearbyintf \
 	nexttoward \
 	nexttowardf \
 	remainder \

configure.ac

@@ -2681,7 +2681,6 @@ AC_CHECK_FUNCS(\
 	log2 \
 	log2f \
 	nearbyint \
-	nearbyintf \
 	nexttoward \
 	nexttowardf \
 	remainder \

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;
 }
 
 /*********************************************************************

dlls/msvcrt/unixlib.c

@@ -560,18 +560,6 @@ static double CDECL unix_nearbyint(double num)
 }
 
 /*********************************************************************
- *      nearbyintf
- */
-static float CDECL unix_nearbyintf(float num)
-{
-#ifdef HAVE_NEARBYINTF
-    return nearbyintf(num);
-#else
-    return unix_nearbyint(num);
-#endif
-}
-
-/*********************************************************************
  *      nextafter
  */
 static double CDECL unix_nextafter(double num, double next)
@@ -847,7 +835,6 @@ static const struct unix_funcs funcs =
     unix_modf,
     unix_modff,
     unix_nearbyint,
-    unix_nearbyintf,
     unix_nextafter,
     unix_nextafterf,
     unix_nexttoward,

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);

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