Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / tr1 / 5_numerical_facilities / special_functions / 05_comp_ellint_2 / check_value.cc

diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/05_comp_ellint_2/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/05_comp_ellint_2/check_value.cc
new file mode 100644 (file)
index 0000000..8cd0422
--- /dev/null
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/05_comp_ellint_2/check_value.cc
@@ -0,0 +1,96 @@
+// 2007-02-04  Edward Smith-Rowland <3dw4rd@verizon.net>
+//
+// Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+//  comp_ellint_2
+
+
+//  Compare against values generated by the GNU Scientific Library.
+//  The GSL can be found on the web: http://www.gnu.org/software/gsl/
+
+#include <tr1/cmath>
+#if defined(__TEST_DEBUG)
+#include <iostream>
+#define VERIFY(A) \
+if (!(A)) \
+  { \
+    std::cout << "line " << __LINE__ \
+      << "  max_abs_frac = " << max_abs_frac \
+      << std::endl; \
+  }
+#else
+#include <testsuite_hooks.h>
+#endif
+#include "../testcase.h"
+
+
+// Test data.
+testcase_comp_ellint_2<double> data001[] = {
+  { 1.1716970527816140, -0.90000000000000002 },
+  { 1.2763499431699066, -0.80000000000000004 },
+  { 1.3556611355719557, -0.69999999999999996 },
+  { 1.4180833944487243, -0.59999999999999998 },
+  { 1.4674622093394274, -0.50000000000000000 },
+  { 1.5059416123600402, -0.40000000000000002 },
+  { 1.5348334649232489, -0.30000000000000004 },
+  { 1.5549685462425296, -0.19999999999999996 },
+  { 1.5668619420216685, -0.099999999999999978 },
+  { 1.5707963267948966, 0.0000000000000000 },
+  { 1.5668619420216685, 0.10000000000000009 },
+  { 1.5549685462425296, 0.19999999999999996 },
+  { 1.5348334649232489, 0.30000000000000004 },
+  { 1.5059416123600404, 0.39999999999999991 },
+  { 1.4674622093394274, 0.50000000000000000 },
+  { 1.4180833944487241, 0.60000000000000009 },
+  { 1.3556611355719557, 0.69999999999999996 },
+  { 1.2763499431699066, 0.80000000000000004 },
+  { 1.1716970527816142, 0.89999999999999991 },
+};
+
+// Test function.
+template <typename Tp>
+void test001()
+{
+  const Tp eps = std::numeric_limits<Tp>::epsilon();
+  Tp max_abs_diff = -Tp(1);
+  Tp max_abs_frac = -Tp(1);
+  unsigned int num_datum = sizeof(data001)
+                         / sizeof(testcase_comp_ellint_2<double>);
+  for (unsigned int i = 0; i < num_datum; ++i)
+    {
+      const Tp f = std::tr1::comp_ellint_2(Tp(data001[i].k));
+      const Tp f0 = data001[i].f0;
+      const Tp diff = f - f0;
+      if (std::abs(diff) > max_abs_diff)
+        max_abs_diff = std::abs(diff);
+      if (std::abs(f0) > Tp(10) * eps
+       && std::abs(f) > Tp(10) * eps)
+        {
+          const Tp frac = diff / f0;
+          if (std::abs(frac) > max_abs_frac)
+            max_abs_frac = std::abs(frac);
+        }
+    }
+  VERIFY(max_abs_frac < Tp(5.0000000000000039e-13));
+}
+
+int main(int, char**)
+{
+  test001<double>();
+  return 0;
+}