msvcr120: If erff is not available, fall back to erf.

dlls/msvcrt/math.c

@@ -2733,28 +2733,27 @@ short CDECL MSVCR120__ldtest(LDOUBLE *x)
 }
 
 /*********************************************************************
- *      erff (MSVCR120.@)
+ *      erf (MSVCR120.@)
  */
-float CDECL MSVCR120_erff(float x)
+double CDECL MSVCR120_erf(double x)
 {
-#ifdef HAVE_ERFF
-    return erff(x);
+#ifdef HAVE_ERF
+    return erf(x);
 #else
     FIXME( "not implemented\n" );
-    return 0.0f;
+    return 0.0;
 #endif
 }
 
 /*********************************************************************
- *      erf (MSVCR120.@)
+ *      erff (MSVCR120.@)
  */
-double CDECL MSVCR120_erf(double x)
+float CDECL MSVCR120_erff(float x)
 {
-#ifdef HAVE_ERF
-    return erf(x);
+#ifdef HAVE_ERFF
+    return erff(x);
 #else
-    FIXME( "not implemented\n" );
-    return 0.0;
+    return MSVCR120_erf(x);
 #endif
 }