msvcrt: Import tgammaf implementation from musl.

configure

@@ -19622,8 +19622,7 @@ fi
 for ac_func in \
 	exp2 \
 	exp2f \
-	fmaf \
-	tgammaf
+	fmaf
 
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`

configure.ac

@@ -2661,8 +2661,7 @@ fi
 AC_CHECK_FUNCS(\
 	exp2 \
 	exp2f \
-	fmaf \
-	tgammaf
+	fmaf
 )
 LIBS="$ac_save_LIBS"
 

dlls/msvcrt/math.c

@@ -9171,10 +9171,12 @@ double CDECL tgamma(double x)
 
 /*********************************************************************
  *      tgammaf (MSVCR120.@)
+ *
+ * Copied from musl: src/math/tgammaf.c
  */
 float CDECL tgammaf(float x)
 {
-    return unix_funcs->tgammaf( x );
+    return tgamma(x);
 }
 
 /*********************************************************************

dlls/msvcrt/unixlib.c

@@ -110,19 +110,6 @@ static float CDECL unix_powf( float x, float y )
     return powf( x, y );
 }
 
-/*********************************************************************
- *      tgammaf
- */
-static float CDECL unix_tgammaf(float x)
-{
-#ifdef HAVE_TGAMMAF
-    return tgammaf(x);
-#else
-    FIXME( "not implemented\n" );
-    return 0;
-#endif
-}
-
 static const struct unix_funcs funcs =
 {
     unix_exp,
@@ -132,7 +119,6 @@ static const struct unix_funcs funcs =
     unix_fmaf,
     unix_pow,
     unix_powf,
-    unix_tgammaf,
 };
 
 NTSTATUS CDECL __wine_init_unix_lib( HMODULE module, DWORD reason, const void *ptr_in, void *ptr_out )

dlls/msvcrt/unixlib.h

@@ -30,7 +30,6 @@ struct unix_funcs
     float           (CDECL *fmaf)(float x, float y, float z);
     double          (CDECL *pow)(double x, double y);
     float           (CDECL *powf)(float x, float y);
-    float           (CDECL *tgammaf)(float x);
 };
 
 #endif /* __UNIXLIB_H */

include/config.h.in

@@ -929,9 +929,6 @@
 /* Define to 1 if you have the <termios.h> header file. */
 #undef HAVE_TERMIOS_H
 
-/* Define to 1 if you have the `tgammaf' function. */
-#undef HAVE_TGAMMAF
-
 /* Define to 1 if you have the `thr_kill2' function. */
 #undef HAVE_THR_KILL2