diff src/fftw-3.3.5/libbench2/verify.c @ 42:2cd0e3b3e1fd

Current fftw source

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.5/libbench2/verify.c	Tue Oct 18 13:40:26 2016 +0100
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2000 Matteo Frigo
+ * Copyright (c) 2000 Massachusetts Institute of Technology
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+
+#include "verify.h"
+
+void verify_problem(bench_problem *p, int rounds, double tol)
+{
+     errors e;
+     const char *pstring = p->pstring ? p->pstring : "<unknown problem>";
+
+     switch (p->kind) {
+	 case PROBLEM_COMPLEX: verify_dft(p, rounds, tol, &e); break;
+	 case PROBLEM_REAL: verify_rdft2(p, rounds, tol, &e); break;
+	 case PROBLEM_R2R: verify_r2r(p, rounds, tol, &e); break;
+     }
+
+     if (verbose)
+	  ovtpvt("%s %g %g %g\n", pstring, e.l, e.i, e.s);
+}
+
+void verify(const char *param, int rounds, double tol)
+{
+     bench_problem *p;
+
+     p = problem_parse(param);
+     problem_alloc(p);
+
+     if (!can_do(p)) {
+	  ovtpvt_err("No can_do for %s\n", p->pstring);
+	  BENCH_ASSERT(0);
+     }
+
+     problem_zero(p);
+     setup(p);
+
+     verify_problem(p, rounds, tol);
+
+     done(p);
+     problem_destroy(p);
+}
+
+
+static void do_accuracy(bench_problem *p, int rounds, int impulse_rounds)
+{
+     double t[6];
+
+     switch (p->kind) {
+	 case PROBLEM_COMPLEX:
+	      accuracy_dft(p, rounds, impulse_rounds, t); break;
+	 case PROBLEM_REAL:
+	      accuracy_rdft2(p, rounds, impulse_rounds, t); break;
+	 case PROBLEM_R2R:
+	      accuracy_r2r(p, rounds, impulse_rounds, t); break;
+     }
+
+     /* t[0] : L1 error
+	t[1] : L2 error
+	t[2] : Linf error
+	t[3..5]: L1, L2, Linf backward error */
+     ovtpvt("%6.2e %6.2e %6.2e %6.2e %6.2e %6.2e\n", 
+	    t[0], t[1], t[2], t[3], t[4], t[5]);
+}
+
+void accuracy(const char *param, int rounds, int impulse_rounds)
+{
+     bench_problem *p;
+     p = problem_parse(param);
+     BENCH_ASSERT(can_do(p));
+     problem_alloc(p);
+     problem_zero(p);
+     setup(p);
+     do_accuracy(p, rounds, impulse_rounds);
+     done(p);
+     problem_destroy(p);
+}