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-rw-r--r--win32/win32.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/win32/win32.h b/win32/win32.h
index 5a93f2d313..2d88de472a 100644
--- a/win32/win32.h
+++ b/win32/win32.h
@@ -74,6 +74,21 @@ extern "C++" {
}
#endif
+#ifdef _M_IX86
+# define WIN95 1
+#else
+# undef WIN95
+#endif
+
+#ifdef WIN95
+extern DWORD rb_w32_osid(void);
+#define rb_w32_iswinnt() (rb_w32_osid() == VER_PLATFORM_WIN32_NT)
+#define rb_w32_iswin95() (rb_w32_osid() == VER_PLATFORM_WIN32_WINDOWS)
+#else
+#define rb_w32_iswinnt() TRUE
+#define rb_w32_iswin95() FALSE
+#endif
+
#define WNOHANG -1
#undef getc