msvcp140_2: Implement __std_smf_hypot3.

dlls/msvcp140_2/Makefile.in

 MODULE       = msvcp140_2.dll
+
+SOURCES = \
+	math.c

dlls/msvcp140_2/math.c

+/*
+ * Special math functions
+ *
+ * Copyright 2024 Alex Henrie
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <math.h>
+
+double __stdcall __std_smf_hypot3(double x, double y, double z)
+{
+    return hypot(hypot(x, y), z);
+}

dlls/msvcp140_2/msvcp140_2.spec

@@ -58,8 +58,8 @@
 @ stub -arch=!i386 __std_smf_hermite
 @ stub -arch=i386 ___std_smf_hermitef@8
 @ stub -arch=!i386 __std_smf_hermitef
-@ stub -arch=i386 ___std_smf_hypot3@24
-@ stub -arch=!i386 __std_smf_hypot3
+@ stdcall -arch=i386 ___std_smf_hypot3@24(double double double) __std_smf_hypot3
+@ stdcall -arch=!i386 __std_smf_hypot3(double double double)
 @ stub -arch=i386 ___std_smf_hypot3f@12
 @ stub -arch=!i386 __std_smf_hypot3f
 @ stub -arch=i386 ___std_smf_laguerre@12