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+/* const/test.c
+ *
+ * Copyright (C) 2003 Brian Gough
+ *
+ * This program 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 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program 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 program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <math.h>
+#include <gsl/gsl_math.h>
+#include <gsl/gsl_const.h>
+#include <gsl/gsl_test.h>
+
+#include <gsl/gsl_ieee_utils.h>
+
+int
+main (void)
+{
+ gsl_ieee_env_setup ();
+
+ /* Basic check to make sure the header files are functioning */
+
+ {
+ double c = GSL_CONST_MKS_SPEED_OF_LIGHT;
+ double eps = GSL_CONST_MKS_VACUUM_PERMITTIVITY;
+ double mu = GSL_CONST_MKS_VACUUM_PERMEABILITY;
+
+ gsl_test_rel (c, 1.0/sqrt(eps*mu), 1e-6, "speed of light (mks)");
+ }
+
+ {
+ double ly = GSL_CONST_CGS_LIGHT_YEAR;
+ double c = GSL_CONST_CGS_SPEED_OF_LIGHT;
+ double y = 365.2425 * GSL_CONST_CGS_DAY;
+
+ gsl_test_rel (ly, c * y, 1e-6, "light year (cgs)");
+ }
+
+ {
+ double c = GSL_CONST_MKSA_SPEED_OF_LIGHT;
+ double eps = GSL_CONST_MKSA_VACUUM_PERMITTIVITY;
+ double mu = GSL_CONST_MKSA_VACUUM_PERMEABILITY;
+
+ gsl_test_rel (c, 1.0/sqrt(eps*mu), 1e-6, "speed of light (mksa)");
+ }
+
+ {
+ double ly = GSL_CONST_CGSM_LIGHT_YEAR;
+ double c = GSL_CONST_CGSM_SPEED_OF_LIGHT;
+ double y = 365.2425 * GSL_CONST_CGSM_DAY;
+
+ gsl_test_rel (ly, c * y, 1e-6, "light year (cgsm)");
+ }
+
+ {
+ double micro = GSL_CONST_NUM_MICRO;
+ double mega = GSL_CONST_NUM_MEGA;
+ double kilo = GSL_CONST_NUM_KILO;
+
+ gsl_test_rel (mega/kilo, 1/(micro*kilo), 1e-10, "kilo (mega/kilo, 1/(micro*kilo))");
+ }
+
+ {
+ double d = GSL_CONST_MKSA_DEBYE;
+ double c = GSL_CONST_MKSA_SPEED_OF_LIGHT;
+ double desu = d * c * 1000.0;
+
+ gsl_test_rel (desu, 1e-18, 1e-10, "debye (esu)");
+ }
+
+ {
+ double k = GSL_CONST_MKSA_BOLTZMANN;
+ double c = GSL_CONST_MKSA_SPEED_OF_LIGHT;
+ double h = GSL_CONST_MKSA_PLANCKS_CONSTANT_H;
+ double s = 2 * pow(M_PI, 5.0) * pow(k, 4.0) / (15 * pow(c, 2.0) * pow(h, 3.0));
+ double sigma = GSL_CONST_MKSA_STEFAN_BOLTZMANN_CONSTANT;
+
+ gsl_test_rel(s, sigma, 1e-10, "stefan boltzmann constant");
+ }
+
+
+ exit (gsl_test_summary ());
+}
+