+#endif // TRUE/FALSE
+
+// Add more tests here for Windows compilers that already define bool
+// (under Unix, configure tests for this)
+#ifndef HAVE_BOOL
+ #if defined( __MWERKS__ )
+ #if (__MWERKS__ >= 0x1000) && !__option(bool)
+ #define HAVE_BOOL
+ #endif
+ #elif defined(__VISUALC__) && (__VISUALC__ == 1020)
+ // in VC++ 4.2 the bool keyword is reserved (hence can't be typedefed)
+ // but not implemented, so we must #define it
+ #define bool unsigned int
+ #elif defined(__VISUALC__) && (__VISUALC__ > 1020)
+ // VC++ supports bool since 4.2
+ #define HAVE_BOOL
+ #elif defined(__BORLANDC__) && (__BORLANDC__ >= 0x500)
+ // Borland 5.0+ supports bool
+ #define HAVE_BOOL
+ #elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
+ // Watcom 11+ supports bool
+ #define HAVE_BOOL
+ #endif // compilers
+#endif // HAVE_BOOL
+
+#if !defined(HAVE_BOOL) && !defined(bool)
+ // NB: of course, this doesn't replace the standard type, because, for
+ // example, overloading based on bool/int parameter doesn't work and
+ // so should be avoided in portable programs