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-rw-r--r--include/ruby/win32.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/ruby/win32.h b/include/ruby/win32.h
index 5ec3d3dd66..7cbdb884df 100644
--- a/include/ruby/win32.h
+++ b/include/ruby/win32.h
@@ -764,4 +764,18 @@ 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 */