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335 lines
9.0 KiB
335 lines
9.0 KiB
/* GSL - Generic Sound Layer
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* Copyright (C) 2001 Stefan Westerfeld and Tim Janik
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gsl/gslmath.h>
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#include <gsl/gslfilter.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#define PREC "15"
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static void
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usage (char *s)
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{
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printf ("usage: gslmathtest %s\n", s);
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exit (1);
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}
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int
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main (int argc,
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char *argv[])
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{
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gchar *arg;
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if (argc < 2)
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goto abort;
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if (strcmp (argv[1], "rf") == 0)
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{
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double x, y, z;
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if (argc != 5)
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usage ("rf <x> <y> <z>");
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x = atof (argv[2]);
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y = atof (argv[3]);
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z = atof (argv[4]);
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printf ("rf(%f, %f, %f) = %."PREC"f\n", x, y, z, gsl_ellip_rf (x, y, z));
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}
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else if (strcmp (argv[1], "F") == 0)
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{
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double phi, ak;
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if (argc != 4)
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usage ("F <phi> <ak>");
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phi = atof (argv[2]);
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ak = atof (argv[3]);
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printf ("F(%f, %f) = %."PREC"f\n", phi, ak, gsl_ellip_F (phi, ak));
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}
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else if (strcmp (argv[1], "sn") == 0)
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{
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double u, emmc;
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if (argc != 4)
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usage ("sn <u> <emmc>");
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u = atof (argv[2]);
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emmc = atof (argv[3]);
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printf ("sn(%f, %f) = %."PREC"f\n", u, emmc, gsl_ellip_sn (u, emmc));
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}
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else if (strcmp (argv[1], "snc") == 0)
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{
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GslComplex u, emmc;
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if (argc != 6)
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usage ("sn <u.re> <u.im> <emmc.re> <emmc.im>");
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u.re = atof (argv[2]);
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u.im = atof (argv[3]);
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emmc.re = atof (argv[4]);
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emmc.im = atof (argv[5]);
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printf ("snc(%s, %s) = %s\n",
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gsl_complex_str (u),
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gsl_complex_str (emmc),
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gsl_complex_str (gsl_complex_ellip_sn (u, emmc)));
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}
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else if (strcmp (argv[1], "sci_snc") == 0)
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{
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GslComplex u, k2;
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if (argc != 6)
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usage ("sci_sn <u.re> <u.im> <k2.re> <k2.im>");
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u.re = atof (argv[2]);
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u.im = atof (argv[3]);
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k2.re = atof (argv[4]);
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k2.im = atof (argv[5]);
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printf ("sci_snc(%s, %s) = %s\n",
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gsl_complex_str (u),
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gsl_complex_str (k2),
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gsl_complex_str (gsl_complex_ellip_sn (u, gsl_complex_sub (gsl_complex (1.0, 0), k2))));
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}
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else if (strcmp (argv[1], "asn") == 0)
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{
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double y, emmc;
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if (argc != 4)
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usage ("asn <y> <emmc>");
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y = atof (argv[2]);
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emmc = atof (argv[3]);
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printf ("asn(%f, %f) = %."PREC"f\n", y, emmc, gsl_ellip_asn (y, emmc));
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}
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else if (strcmp (argv[1], "asnc") == 0)
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{
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GslComplex y, emmc;
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if (argc != 6)
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usage ("asnc <y.re> <y.im> <emmc.re> <emmc.im>");
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y.re = atof (argv[2]);
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y.im = atof (argv[3]);
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emmc.re = atof (argv[4]);
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emmc.im = atof (argv[5]);
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printf ("asnc(%s, %s) = %s\n",
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gsl_complex_str (y), gsl_complex_str (emmc),
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gsl_complex_str (gsl_complex_ellip_asn (y, emmc)));
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printf ("asn(%f, %f = %."PREC"f\n",
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y.re, emmc.re, gsl_ellip_asn (y.re, emmc.re));
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}
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else if (strcmp (argv[1], "sci_sn") == 0)
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{
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double u, k2;
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if (argc != 4)
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usage ("sci_sn <u> <k2>");
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u = atof (argv[2]);
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k2 = atof (argv[3]);
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printf ("sci_sn(%f, %f) = %."PREC"f\n", u, k2, gsl_ellip_sn (u, 1.0 - k2));
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}
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else if (strcmp (argv[1], "sci_asn") == 0)
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{
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double y, k2;
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if (argc != 4)
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usage ("sci_asn <y> <k2>");
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y = atof (argv[2]);
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k2 = atof (argv[3]);
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printf ("sci_asn(%f, %f) = %."PREC"f\n", y, k2, gsl_ellip_asn (y, 1.0 - k2));
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}
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else if (strcmp (argv[1], "sci_asnc") == 0)
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{
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GslComplex y, k2;
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if (argc != 6)
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usage ("sci_asnc <y.re> <y.im> <k2.re> <k2.im>");
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y.re = atof (argv[2]);
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y.im = atof (argv[3]);
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k2.re = atof (argv[4]);
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k2.im = atof (argv[5]);
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printf ("sci_asnc(%s, %s) = %s\n",
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gsl_complex_str (y), gsl_complex_str (k2),
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gsl_complex_str (gsl_complex_ellip_asn (y, gsl_complex_sub (gsl_complex (1.0, 0), k2))));
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printf ("asn(%f, %f = %."PREC"f\n",
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y.re, k2.re, gsl_ellip_asn (y.re, 1.0 - k2.re));
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}
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else if (strcmp (argv[1], "sin") == 0)
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{
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GslComplex phi;
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if (argc != 4)
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usage ("sin <phi.re> <phi.im>");
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phi.re = atof (argv[2]);
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phi.im = atof (argv[3]);
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printf ("sin(%s) = %s\n",
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gsl_complex_str (phi),
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gsl_complex_str (gsl_complex_sin (phi)));
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}
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else if (strcmp (argv[1], "cos") == 0)
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{
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GslComplex phi;
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if (argc != 4)
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usage ("cos <phi.re> <phi.im>");
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phi.re = atof (argv[2]);
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phi.im = atof (argv[3]);
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printf ("cos(%s) = %s\n",
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gsl_complex_str (phi),
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gsl_complex_str (gsl_complex_cos (phi)));
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}
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else if (strcmp (argv[1], "tan") == 0)
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{
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GslComplex phi;
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if (argc != 4)
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usage ("tan <phi.re> <phi.im>");
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phi.re = atof (argv[2]);
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phi.im = atof (argv[3]);
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printf ("tan(%s) = %s\n",
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gsl_complex_str (phi),
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gsl_complex_str (gsl_complex_tan (phi)));
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}
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else if (strcmp (argv[1], "sinh") == 0)
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{
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GslComplex phi;
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if (argc != 4)
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usage ("sinh <phi.re> <phi.im>");
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phi.re = atof (argv[2]);
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phi.im = atof (argv[3]);
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printf ("sinh(%s) = %s\n",
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gsl_complex_str (phi),
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gsl_complex_str (gsl_complex_sinh (phi)));
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}
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else if (strcmp (argv[1], "cosh") == 0)
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{
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GslComplex phi;
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if (argc != 4)
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usage ("cosh <phi.re> <phi.im>");
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phi.re = atof (argv[2]);
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phi.im = atof (argv[3]);
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printf ("cosh(%s) = %s\n",
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gsl_complex_str (phi),
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gsl_complex_str (gsl_complex_cosh (phi)));
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}
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else if (strcmp (argv[1], "tanh") == 0)
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{
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GslComplex phi;
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if (argc != 4)
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usage ("tanh <phi.re> <phi.im>");
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phi.re = atof (argv[2]);
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phi.im = atof (argv[3]);
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printf ("tanh(%s) = %s\n",
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gsl_complex_str (phi),
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gsl_complex_str (gsl_complex_tanh (phi)));
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}
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else if (strcmp (argv[1], "t1") == 0)
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{
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guint order;
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double f, e;
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if (argc != 5)
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usage ("t1 <order> <freq> <epsilon>");
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order = atoi (argv[2]);
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f = atof (argv[3]);
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e = atof (argv[4]);
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f *= GSL_PI / 2.;
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e = gsl_trans_zepsilon2ss (e);
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{
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double a[order + 1], b[order + 1];
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gsl_filter_tscheb1 (order, f, e, a, b);
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g_print ("# Tschebyscheff Type1 order=%u freq=%f s^2epsilon=%f norm0=%f:\n",
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order, f, e,
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gsl_poly_eval (order, a, 1) / gsl_poly_eval (order, b, 1));
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g_print ("H%u(z)=%s/%s\n", order,
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gsl_poly_str (order, a, "z"),
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gsl_poly_str (order, b, "z"));
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}
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}
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else if (strcmp (argv[1], "t2") == 0)
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{
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guint order;
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double fc, fr, e;
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if (argc != 6)
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usage ("t1 <order> <freqc> <freqr> <epsilon>");
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order = atoi (argv[2]);
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fc = atof (argv[3]);
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fr = atof (argv[4]);
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e = atof (argv[5]);
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fc *= GSL_PI / 2.;
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fr *= GSL_PI / 2.;
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e = gsl_trans_zepsilon2ss (e);
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{
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double a[order + 1], b[order + 1];
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gsl_filter_tscheb2 (order, fc, fr, e, a, b);
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g_print ("# Tschebyscheff Type2 order=%u freq_c=%f freq_r=%f s^2epsilon=%f norm=%f:\n",
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order, fc, fr, e,
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gsl_poly_eval (order, a, 1) / gsl_poly_eval (order, b, 1));
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g_print ("H%u(z)=%s/%s\n", order,
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gsl_poly_str (order, a, "z"),
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gsl_poly_str (order, b, "z"));
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}
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}
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else if (strncmp (argv[1], "test", 4) == 0)
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{
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guint order;
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arg = argv[1] + 4;
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if (argc != argc)
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usage ("test");
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order = 2;
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{
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double a[100] = { 1, 2, 1 }, b[100] = { 1, -3./2., 0.5 };
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g_print ("# Test order=%u norm=%f:\n",
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order,
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gsl_poly_eval (order, a, 1) / gsl_poly_eval (order, b, 1));
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g_print ("H%u(z)=%s/%s\n", order,
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gsl_poly_str (order, a, "z"),
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gsl_poly_str (order, b, "z"));
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if (*arg)
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{
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GslComplex root, roots[100];
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guint i;
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if (*arg == 'r')
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{
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g_print ("#roots:\n");
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gsl_poly_complex_roots (order, a, roots);
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for (i = 0; i < order; i++)
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{
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root = gsl_complex_div (gsl_complex (1, 0), roots[i]);
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g_print ("%+.14f %+.14f # %.14f\n", root.re, root.im, gsl_complex_abs (root));
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}
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}
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if (*arg == 'p')
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{
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g_print ("#poles:\n");
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gsl_poly_complex_roots (order, b, roots);
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for (i = 0; i < order; i++)
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{
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root = gsl_complex_div (gsl_complex (1, 0), roots[i]);
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g_print ("%+.14f %+.14f # %.14f\n", root.re, root.im, gsl_complex_abs (root));
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}
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}
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}
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}
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}
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else
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{
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abort:
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usage ("{rf|F|sn|snc|sci_sn|sci_snc|asn|asnc|sci_asn|sci_asnc|sin(h)|cos(h)|tan(h)|t1|t2} ...");
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}
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return 0;
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}
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