From 0414c9b901a3764b7cdb549d3273e7e54210c8ff Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 24 Sep 2012 07:34:51 +0000
Subject: merge revision(s) 36522: [Backport #7016]

	* include/ruby/win32.h (rb_w32_pow): add new function.
	  We use powl() instead of broken pow() for x64-mingw32. This workaround
	  fixes test failures related to floating point numeric.
	  [ruby-core:46686] [Bug #6784]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@37024 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 include/ruby/win32.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'include/ruby')

diff --git a/include/ruby/win32.h b/include/ruby/win32.h
index 99cdea1fc3..99382f48e3 100644
--- a/include/ruby/win32.h
+++ b/include/ruby/win32.h
@@ -756,4 +756,18 @@ uintptr_t rb_w32_asynchronize(asynchronous_func_t func, uintptr_t self, int argc
 }  /* extern "C" { */
 #endif
 
+#ifdef __MINGW64__
+/*
+ * Use powl() instead of broken pow() of x86_64-w64-mingw32.
+ * This workaround will fix test failures in test_bignum.rb,
+ * test_fixnum.rb and test_float.rb etc.
+ */
+static inline double
+rb_w32_pow(double x, double y)
+{
+    return powl(x, y);
+}
+#define pow rb_w32_pow
+#endif
+
 #endif /* RUBY_WIN32_H */
-- 
cgit v1.2.3