--- a/include/SDL_cpuinfo.h	Mon Nov 24 00:21:24 2003 +0000
+++ b/include/SDL_cpuinfo.h	Mon Nov 24 09:16:52 2003 +0000
@@ -37,6 +37,10 @@
 extern "C" {
 #endif
 
+/* This function returns true if the CPU has the RDTSC instruction
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC();
+
 /* This function returns true if the CPU has MMX features
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX();