1 files changed, 45 insertions, 0 deletions
diff --git a/libao2/remez.h b/libao2/remez.h
new file mode 100644
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+++ b/libao2/remez.h
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+/**************************************************************************
+ * Parks-McClellan algorithm for FIR filter design (C version)
+ *-------------------------------------------------
+ *  Copyright (c) 1995,1998  Jake Janovetz (janovetz@uiuc.edu)
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, 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
+ *  Library General Public License for more details.
+
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *************************************************************************/
+#ifndef __REMEZ_H__
+#define __REMEZ_H__
+
+#define BANDPASS       1
+#define DIFFERENTIATOR 2
+#define HILBERT        3
+
+#define NEGATIVE       0
+#define POSITIVE       1
+
+#define Pi             3.1415926535897932
+#define Pi2            6.2831853071795865
+
+#define GRIDDENSITY    16
+#define MAXITERATIONS  40
+
+/* Function prototype for remez() - the only function that should need be
+ * called from external code
+ */
+void remez(double h[], int numtaps,
+           int numband, double bands[], double des[], double weight[],
+           int type);
+
+#endif /* __REMEZ_H__ */
+