From 7e070e1c4b01721d925a8deb7773e776eecb8840 Mon Sep 17 00:00:00 2001
From: Dmitri Naumov <dmitri.naumov@ufz.de>
Date: Thu, 16 Oct 2014 17:18:47 +0200
Subject: [PATCH] [ML] A MSVC friendly alternative to MathLib::pow().
---
MathLib/MathTools.h | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/MathLib/MathTools.h b/MathLib/MathTools.h
index be8b7016db7..07713af3984 100644
--- a/MathLib/MathTools.h
+++ b/MathLib/MathTools.h
@@ -170,11 +170,25 @@ T fastpow (T base, std::size_t exp)
* Template metaprogramming, compile-time version of pow() for integral
* exponents.
*/
+#ifdef WIN32
+template <typename T, T B, unsigned E>
+struct POW
+{
+ static T const value = B * POW<T, B, E-1>::value;
+};
+
+template <typename T, T B>
+struct POW<T, B, 0>
+{
+ static T const value = 1;
+};
+#else // WIN32
template <typename T>
inline constexpr T pow(T const x, unsigned const y)
{
- return (y == 0) ? 1 : x * pow(x, y - 1);
-};
+ return (y == 0) ? 1 : x * pow(x, y - 1);
+}
+#endif // WIN32
} // namespace
--
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