msvcr120: Add fmin implementation.

dlls/msvcr120/msvcr120.spec

@@ -2167,9 +2167,9 @@
 @ cdecl fmax(double double) MSVCR120_fmax
 @ cdecl fmaxf(float float) MSVCR120_fmaxf
 @ cdecl fmaxl(double double) MSVCR120_fmax
-@ stub fmin
-@ stub fminf
-@ stub fminl
+@ cdecl fmin(double double) MSVCR120_fmin
+@ cdecl fminf(float float) MSVCR120_fminf
+@ cdecl fminl(double double) MSVCR120_fmin
 @ cdecl fmod(double double) MSVCRT_fmod
 @ cdecl -arch=arm,x86_64 fmodf(float float) MSVCRT_fmodf
 @ cdecl fopen(str str) MSVCRT_fopen

dlls/msvcr120_app/msvcr120_app.spec

@@ -1836,9 +1836,9 @@
 @ cdecl fmax(double double) msvcr120.fmax
 @ cdecl fmaxf(float float) msvcr120.fmaxf
 @ cdecl fmaxl(double double) msvcr120.fmaxl
-@ stub fmin
-@ stub fminf
-@ stub fminl
+@ cdecl fmin(double double) msvcr120.fmin
+@ cdecl fminf(float float) msvcr120.fminf
+@ cdecl fminl(double double) msvcr120.fminl
 @ cdecl fmod(double double) msvcr120.fmod
 @ cdecl -arch=arm,x86_64 fmodf(float float) msvcr120.fmodf
 @ cdecl fopen(str str) msvcr120.fopen

dlls/msvcrt/math.c

@@ -2683,3 +2683,31 @@ int CDECL MSVCR120__dsign(double x)
 {
     return signbit(x) ? 0x8000 : 0;
 }
+
+/*********************************************************************
+ *      fminf (MSVCR120.@)
+ */
+float CDECL MSVCR120_fminf(float x, float y)
+{
+    if(isnanf(x))
+        return y;
+    if(isnanf(y))
+        return x;
+    if(x==0 && y==0)
+        return signbit(x) ? x : y;
+    return x<y ? x : y;
+}
+
+/*********************************************************************
+ *      fmin (MSVCR120.@)
+ */
+double CDECL MSVCR120_fmin(double x, double y)
+{
+    if(isnan(x))
+        return y;
+    if(isnan(y))
+        return x;
+    if(x==0 && y==0)
+        return signbit(x) ? x : y;
+    return x<y ? x : y;
+}