- Check for packaged streflop and use it before using embedded copy

source/shared_lib/include/platform/common/streflop_cond.h

@@ -0,0 +1,73 @@
+/* Copyright (C) 2008 Tobi Vollebregt
+				 2010 Mark Vejvoda
+
+	You can redistribute this code and/or modify it under
+	the terms of the GNU General Public License as published
+	by the Free Software Foundation; either version 2 of the
+	License, or (at your option) any later version
+ ==============================================================
+*/
+
+/* Conditionally include streflop depending on STREFLOP_* #defines:
+   If one of those is present, #include "streflop.h", otherwise #include <math.h>
+
+   When faced with ambiguous call errors with e.g. fabs, use math::function.
+   Add it to math namespace if it doesn't exist there yet. */
+
+#ifndef STREFLOP_COND_H
+#define STREFLOP_COND_H
+
+#if defined(STREFLOP_X87) || defined(STREFLOP_SSE) || defined(STREFLOP_SOFT)
+#include <streflop.h>
+using namespace streflop;
+
+namespace math {
+	using namespace streflop;
+}
+#else
+#include <cmath>
+namespace math {
+	using std::fabs;
+	// using std::sqrt;
+	using std::sin;
+	using std::cos;
+
+	using std::sinh;
+	using std::cosh;
+	using std::tan;
+	using std::tanh;
+	using std::asin;
+	using std::acos;
+	using std::atan;
+	using std::atan2;
+	using std::ceil;
+	using std::floor;
+	using std::fmod;
+	using std::pow;
+	using std::log;
+	using std::log10;
+	using std::exp;
+	using std::frexp;
+	using std::ldexp;
+// the following are C99 functions -> not supported by VS C
+#if !defined(_MSC_VER) || _MSC_VER < 1500
+	using std::isnan;
+	using std::isinf;
+	using std::isfinite;
+#elif __cplusplus
+	template<typename T> inline bool isnan(T value) {
+		return value != value;
+	}
+	// requires include <limits>
+	template<typename T> inline bool isinf(T value) {
+		return std::numeric_limits<T>::has_infinity && value == std::numeric_limits<T>::infinity();
+	}
+	// requires include <limits>
+	template<typename T> inline bool isfinite(T value) {
+		return !isinf<T>(value);
+	}
+#endif
+}
+#endif
+
+#endif // STREFLOP_COND_H