--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/tests/complex_vector_int_tests.c	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,136 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * complex_vector_int_tests.c
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2006 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: complex_vector_int_tests.c,v 1.2 2009/04/26 07:00:39 steveu Exp $
+ */
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "spandsp.h"
+
+static complexi32_t cvec_dot_prodi16_dumb(const complexi16_t x[], const complexi16_t y[], int n)
+{
+    complexi32_t z;
+    int i;
+
+    z = complex_seti32(0, 0);
+    for (i = 0;  i < n;  i++)
+    {
+        z.re += ((int32_t) x[i].re*(int32_t) y[i].re - (int32_t) x[i].im*(int32_t) y[i].im);
+        z.im += ((int32_t) x[i].re*(int32_t) y[i].im + (int32_t) x[i].im*(int32_t) y[i].re);
+    }
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int test_cvec_dot_prodi16(void)
+{
+    int i;
+    complexi32_t za;
+    complexi32_t zb;
+    complexi16_t x[99];
+    complexi16_t y[99];
+
+    for (i = 0;  i < 99;  i++)
+    {
+        x[i].re = rand();
+        x[i].im = rand();
+        y[i].re = rand();
+        y[i].im = rand();
+    }
+
+    for (i = 1;  i < 99;  i++)
+    {
+        za = cvec_dot_prodi16(x, y, i);
+        zb = cvec_dot_prodi16_dumb(x, y, i);
+        if (za.re != zb.re  ||  za.im != zb.im)
+        {
+            printf("Tests failed\n");
+            exit(2);
+        }
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int test_cvec_circular_dot_prodi16(void)
+{
+    int i;
+    int j;
+    int pos;
+    int len;
+    complexi32_t za;
+    complexi32_t zb;
+    complexi16_t x[99];
+    complexi16_t y[99];
+
+    /* Verify that we can do circular sample buffer "dot" linear coefficient buffer
+       operations properly, by doing two sub-dot products. */
+    for (i = 0;  i < 99;  i++)
+    {
+        x[i].re = rand();
+        x[i].im = rand();
+        y[i].re = rand();
+        y[i].im = rand();
+    }
+
+    len = 95;
+    for (pos = 0;  pos < len;  pos++)
+    {
+        za = cvec_circular_dot_prodi16(x, y, len, pos);
+        zb = complex_seti32(0, 0);
+        for (i = 0;  i < len;  i++)
+        {
+            j = (pos + i) % len;
+            zb.re += ((int32_t) x[j].re*(int32_t) y[i].re - (int32_t) x[j].im*(int32_t) y[i].im);
+            zb.im += ((int32_t) x[j].re*(int32_t) y[i].im + (int32_t) x[j].im*(int32_t) y[i].re);
+        }
+
+        if (za.re != zb.re  ||  za.im != zb.im)
+        {
+            printf("Tests failed\n");
+            exit(2);
+        }
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+    test_cvec_dot_prodi16();
+    test_cvec_circular_dot_prodi16();
+
+    printf("Tests passed.\n");
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/