1 files changed, 39 insertions, 0 deletions
diff --git a/lib/equ/iir_fpu.h b/lib/equ/iir_fpu.h
new file mode 100644
index 000000000..990eebf97
--- /dev/null
+++ b/lib/equ/iir_fpu.h
@@ -0,0 +1,39 @@
+/*
+ *   PCM time-domain equalizer
+ *
+ *   Copyright (C) 2002-2005  Felipe Rivera <liebremx at users.sourceforge.net>
+ *
+ *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *   $Id: iir_fpu.h,v 1.2 2005/11/01 15:59:20 lisanet Exp $$
+ */
+#ifndef IIR_FPU_H
+#define IIR_FPU_H
+
+#define sample_t double
+
+/*
+ * Normal FPU implementation data structures
+ */
+/* Coefficient history for the IIR filter */
+typedef struct
+{
+    sample_t x[3]; /* x[n], x[n-1], x[n-2] */
+    sample_t y[3]; /* y[n], y[n-1], y[n-2] */
+    sample_t dummy1; // Word alignment
+    sample_t dummy2;
+}sXYData;
+
+#endif