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libs/math/performance/test_gamma.cpp

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+//  Copyright John Maddock 2007.
+//  Use, modification and distribution are subject to 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)
+
+#include "required_defines.hpp"
+
+#include "performance_measure.hpp"
+
+#include <boost/math/special_functions/gamma.hpp>
+#include <boost/array.hpp>
+
+#define T double
+#include "../test/test_gamma_data.ipp"
+
+template <std::size_t N>
+double gamma_evaluate2(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += boost::math::tgamma(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(gamma_test, "gamma")
+{
+   double result = gamma_evaluate2(factorials);
+   result += gamma_evaluate2(near_1);
+   result += gamma_evaluate2(near_2);
+   result += gamma_evaluate2(near_0);
+   result += gamma_evaluate2(near_m10);
+   result += gamma_evaluate2(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+template <std::size_t N>
+double lgamma_evaluate2(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += boost::math::lgamma(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(lgamma_test, "lgamma")
+{
+   double result = lgamma_evaluate2(factorials);
+   result += lgamma_evaluate2(near_1);
+   result += lgamma_evaluate2(near_2);
+   result += lgamma_evaluate2(near_0);
+   result += lgamma_evaluate2(near_m10);
+   result += lgamma_evaluate2(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+template <std::size_t N>
+double tgamma1pm1_evaluate2(const boost::array<boost::array<T, 2>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += boost::math::tgamma1pm1(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(gamma1pm1_test, "tgamma1pm1")
+{
+   double result = tgamma1pm1_evaluate2(gammap1m1_data);
+
+   consume_result(result);
+   set_call_count(
+      sizeof(gammap1m1_data) / sizeof(gammap1m1_data[0]));
+}
+
+#ifdef TEST_CEPHES
+
+extern "C" {
+
+double gamma(double);
+double lgam(double);
+
+}
+
+template <std::size_t N>
+double gamma_evaluate_cephes(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += gamma(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(gamma_test, "gamma-cephes")
+{
+   double result = gamma_evaluate_cephes(factorials);
+   result += gamma_evaluate_cephes(near_1);
+   result += gamma_evaluate_cephes(near_2);
+   result += gamma_evaluate_cephes(near_0);
+   result += gamma_evaluate_cephes(near_m10);
+   result += gamma_evaluate_cephes(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+template <std::size_t N>
+double lgamma_evaluate_cephes(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += lgam(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(lgamma_test, "lgamma-cephes")
+{
+   double result = lgamma_evaluate_cephes(factorials);
+   result += lgamma_evaluate_cephes(near_1);
+   result += lgamma_evaluate_cephes(near_2);
+   result += lgamma_evaluate_cephes(near_0);
+   result += lgamma_evaluate_cephes(near_m10);
+   result += lgamma_evaluate_cephes(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+#endif
+
+#ifdef TEST_GSL
+
+#include <gsl/gsl_sf_gamma.h>
+
+template <std::size_t N>
+double gamma_evaluate_gsl(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += gsl_sf_gamma(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(gamma_test, "gamma-gsl")
+{
+   double result = gamma_evaluate_gsl(factorials);
+   result += gamma_evaluate_gsl(near_1);
+   result += gamma_evaluate_gsl(near_2);
+   result += gamma_evaluate_gsl(near_0);
+   result += gamma_evaluate_gsl(near_m10);
+   result += gamma_evaluate_gsl(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+template <std::size_t N>
+double lgamma_evaluate_gsl(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+      result += gsl_sf_lngamma(data[i][0]);
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(lgamma_test, "lgamma-gsl")
+{
+   double result = lgamma_evaluate_gsl(factorials);
+   result += lgamma_evaluate_gsl(near_1);
+   result += lgamma_evaluate_gsl(near_2);
+   result += lgamma_evaluate_gsl(near_0);
+   result += lgamma_evaluate_gsl(near_m10);
+   result += lgamma_evaluate_gsl(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+#endif
+
+#ifdef TEST_DCDFLIB
+#include <dcdflib.h>
+
+template <std::size_t N>
+double gamma_evaluate2_dcd(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+   {
+      double x = data[i][0];
+      result += gamma_x(&x);
+   }
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(gamma_test_dcd, "gamma-dcd")
+{
+   double result = gamma_evaluate2_dcd(factorials);
+   result += gamma_evaluate2_dcd(near_1);
+   result += gamma_evaluate2_dcd(near_2);
+   result += gamma_evaluate2_dcd(near_0);
+   result += gamma_evaluate2_dcd(near_m10);
+   result += gamma_evaluate2_dcd(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+template <std::size_t N>
+double lgamma_evaluate2_dcd(const boost::array<boost::array<T, 3>, N>& data)
+{
+   double result = 0;
+   for(unsigned i = 0; i < N; ++i)
+   {
+      double x = data[i][0];
+      result += gamma_log(&x);
+   }
+   return result;
+}
+
+BOOST_MATH_PERFORMANCE_TEST(lgamma_test_dcd, "lgamma-dcd")
+{
+   double result = lgamma_evaluate2_dcd(factorials);
+   result += lgamma_evaluate2_dcd(near_1);
+   result += lgamma_evaluate2_dcd(near_2);
+   result += lgamma_evaluate2_dcd(near_0);
+   result += lgamma_evaluate2_dcd(near_m10);
+   result += lgamma_evaluate2_dcd(near_m55);
+
+   consume_result(result);
+   set_call_count(
+      (sizeof(factorials) 
+      + sizeof(near_1) 
+      + sizeof(near_2)
+      + sizeof(near_0)
+      + sizeof(near_m10)
+      + sizeof(near_m55)) / sizeof(factorials[0]));
+}
+
+#endif