config: Make sure HAVE_TRUNC and HAVE_TRUNCF are defined as appropriate.

The configure/cmake scripts were checking for these functions but we didn't
have the SDL_config.h.* pieces in place. The other config headers are best
guesses.

include/SDL_config.h.cmake

@@ -172,6 +172,8 @@
 #cmakedefine HAVE_SQRTF 1
 #cmakedefine HAVE_TAN 1
 #cmakedefine HAVE_TANF 1
+#cmakedefine HAVE_TRUNC 1
+#cmakedefine HAVE_TRUNCF 1
 #cmakedefine HAVE_FOPEN64 1
 #cmakedefine HAVE_FSEEKO 1
 #cmakedefine HAVE_FSEEKO64 1

include/SDL_config.h.in

@@ -176,6 +176,8 @@
 #undef HAVE_SQRTF
 #undef HAVE_TAN
 #undef HAVE_TANF
+#undef HAVE_TRUNC
+#undef HAVE_TRUNCF
 #undef HAVE_FOPEN64
 #undef HAVE_FSEEKO
 #undef HAVE_FSEEKO64

include/SDL_config_android.h

@@ -121,6 +121,8 @@
 #define HAVE_SQRTF  1
 #define HAVE_TAN    1
 #define HAVE_TANF   1
+#define HAVE_TRUNC    1
+#define HAVE_TRUNCF   1
 #define HAVE_SIGACTION 1
 #define HAVE_SETJMP 1
 #define HAVE_NANOSLEEP  1

include/SDL_config_iphoneos.h

@@ -122,6 +122,8 @@
 #define HAVE_SQRTF  1
 #define HAVE_TAN    1
 #define HAVE_TANF   1
+#define HAVE_TRUNC  1
+#define HAVE_TRUNCF 1
 #define HAVE_SIGACTION  1
 #define HAVE_SETJMP 1
 #define HAVE_NANOSLEEP  1

include/SDL_config_macosx.h

@@ -125,6 +125,8 @@
 #define HAVE_SQRTF  1
 #define HAVE_TAN    1
 #define HAVE_TANF   1
+#define HAVE_TRUNC    1
+#define HAVE_TRUNCF   1
 #define HAVE_SIGACTION  1
 #define HAVE_SETJMP 1
 #define HAVE_NANOSLEEP  1

include/SDL_config_os2.h

@@ -180,5 +180,7 @@
 /* #undef HAVE_SQRTF */
 #define HAVE_TAN 1
 /* #undef HAVE_TANF */
+#define HAVE_TRUNC 1
+/* #undef HAVE_TRUNCF */
 
 #endif /* SDL_config_os2_h_ */

include/SDL_config_pandora.h

@@ -102,6 +102,8 @@
 #define HAVE_SQRTF 1
 #define HAVE_TAN 1
 #define HAVE_TANF 1
+#define HAVE_TRUNC 1
+#define HAVE_TRUNCF 1
 #define HAVE_SIGACTION 1
 #define HAVE_SETJMP 1
 #define HAVE_NANOSLEEP 1

include/SDL_config_windows.h

@@ -166,6 +166,8 @@ 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

include/SDL_config_winrt.h

@@ -181,6 +181,8 @@ 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
 #define HAVE__FSEEKI64 1
 
 /* Enable various audio drivers */

include/SDL_config_wiz.h

@@ -117,6 +117,8 @@
 #define HAVE_SQRTF  1
 #define HAVE_TAN    1
 #define HAVE_TANF   1
+#define HAVE_TRUNC    1
+#define HAVE_TRUNCF   1
 #define HAVE_SIGACTION 1
 #define HAVE_SETJMP 1
 #define HAVE_NANOSLEEP 1