--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_rail_ff.h>
+#include <gr_io_signature.h>
+
+gr_rail_ff_sptr
+gr_make_rail_ff(float lo, float hi)
+{
+ return gr_rail_ff_sptr(new gr_rail_ff(lo, hi));
+}
+
+gr_rail_ff::gr_rail_ff(float lo, float hi)
+ : gr_sync_block("rail_ff",
+ gr_make_io_signature(1, 1, sizeof(float)),
+ gr_make_io_signature(1, 1, sizeof(float))),
+ d_lo(lo), d_hi(hi)
+{
+}
+
+int
+gr_rail_ff::work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ const float *in = (const float *) input_items[0];
+ float *out = (float *) output_items[0];
+
+ for (int i = 0; i < noutput_items; i++) {
+ if (in[i] < d_lo)
+ out[i] = d_lo;
+ else if (in[i] > d_hi)
+ out[i] = d_hi;
+ else
+ out[i] = in[i];
+ }
+
+ return noutput_items;
+}