diff DEPENDENCIES/generic/include/boost/numeric/interval/constants.hpp @ 16:2665513ce2d3

Add boost headers
author Chris Cannam
date Tue, 05 Aug 2014 11:11:38 +0100
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DEPENDENCIES/generic/include/boost/numeric/interval/constants.hpp	Tue Aug 05 11:11:38 2014 +0100
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+/* Boost interval/constants.hpp template implementation file
+ *
+ * Copyright 2002 Hervé Brönnimann, Guillaume Melquiond, Sylvain Pion
+ *
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or
+ * copy at http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_NUMERIC_INTERVAL_CONSTANTS_HPP
+#define BOOST_NUMERIC_INTERVAL_CONSTANTS_HPP
+
+namespace boost {
+namespace numeric {
+namespace interval_lib {
+namespace constants {
+
+// These constants should be exactly computed.
+// Decimal representations wouldn't do it since the standard doesn't
+// specify the rounding (even nearest) that should be used.
+
+static const float pi_f_l = 13176794.0f/(1<<22);
+static const float pi_f_u = 13176795.0f/(1<<22);
+static const double pi_d_l = (3373259426.0 + 273688.0 / (1<<21)) / (1<<30);
+static const double pi_d_u = (3373259426.0 + 273689.0 / (1<<21)) / (1<<30);
+
+template<class T> inline T pi_lower() { return 3; }
+template<class T> inline T pi_upper() { return 4; }
+template<class T> inline T pi_half_lower() { return 1; }
+template<class T> inline T pi_half_upper() { return 2; }
+template<class T> inline T pi_twice_lower() { return 6; }
+template<class T> inline T pi_twice_upper() { return 7; }
+
+template<> inline float pi_lower<float>() { return pi_f_l; }
+template<> inline float pi_upper<float>() { return pi_f_u; }
+template<> inline float pi_half_lower<float>() { return pi_f_l / 2; }
+template<> inline float pi_half_upper<float>() { return pi_f_u / 2; }
+template<> inline float pi_twice_lower<float>() { return pi_f_l * 2; }
+template<> inline float pi_twice_upper<float>() { return pi_f_u * 2; }
+
+template<> inline double pi_lower<double>() { return pi_d_l; }
+template<> inline double pi_upper<double>() { return pi_d_u; }
+template<> inline double pi_half_lower<double>() { return pi_d_l / 2; }
+template<> inline double pi_half_upper<double>() { return pi_d_u / 2; }
+template<> inline double pi_twice_lower<double>() { return pi_d_l * 2; }
+template<> inline double pi_twice_upper<double>() { return pi_d_u * 2; }
+
+template<> inline long double pi_lower<long double>() { return pi_d_l; }
+template<> inline long double pi_upper<long double>() { return pi_d_u; }
+template<> inline long double pi_half_lower<long double>() { return pi_d_l / 2; }
+template<> inline long double pi_half_upper<long double>() { return pi_d_u / 2; }
+template<> inline long double pi_twice_lower<long double>() { return pi_d_l * 2; }
+template<> inline long double pi_twice_upper<long double>() { return pi_d_u * 2; }
+
+} // namespace constants
+
+template<class I> inline
+I pi()
+{
+  typedef typename I::base_type T;
+  return I(constants::pi_lower<T>(),
+           constants::pi_upper<T>(), true);
+}
+
+template<class I> inline
+I pi_half()
+{
+  typedef typename I::base_type T;
+  return I(constants::pi_half_lower<T>(),
+           constants::pi_half_upper<T>(), true);
+}
+
+template<class I> inline
+I pi_twice()
+{
+  typedef typename I::base_type T;
+  return I(constants::pi_twice_lower<T>(),
+           constants::pi_twice_upper<T>(), true);
+}
+
+} // namespace interval_lib
+} // namespace numeric
+} // namespace boost
+
+#endif // BOOST_NUMERIC_INTERVAL_CONSTANTS_HPP