SDL_config_windows.h: define HAVE_TRUNC[F] for Visual Studio >= 2013
diff --git a/include/SDL_config_windows.h b/include/SDL_config_windows.h
index eff1795..ca591c2 100644
--- a/include/SDL_config_windows.h
+++ b/include/SDL_config_windows.h
@@ -166,8 +166,6 @@ typedef unsigned int uintptr_t;
#define HAVE_SQRTF 1
#define HAVE_TAN 1
#define HAVE_TANF 1
-#define HAVE_TRUNC 1
-#define HAVE_TRUNCF 1
#if defined(_MSC_VER)
/* These functions were added with the VC++ 2013 C runtime library */
#if _MSC_VER >= 1800
@@ -175,6 +173,8 @@ typedef unsigned int uintptr_t;
#define HAVE_VSSCANF 1
#define HAVE_SCALBN 1
#define HAVE_SCALBNF 1
+#define HAVE_TRUNC 1
+#define HAVE_TRUNCF 1
#endif
/* This function is available with at least the VC++ 2008 C runtime library */
#if _MSC_VER >= 1400