1 files changed, 46 insertions, 0 deletions
diff --git a/gr-blocks/lib/float_array_to_int.cc b/gr-blocks/lib/float_array_to_int.cc
new file mode 100644
index 000000000..66b112c06
--- /dev/null
+++ b/gr-blocks/lib/float_array_to_int.cc
@@ -0,0 +1,46 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011-2012 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
+
+#define _ISOC9X_SOURCE
+#include <float_array_to_int.h>
+#include <math.h>
+#include <stdint.h>
+
+static const int64_t MAX_INT =  2147483647; //  (2^31)-1
+static const int64_t MIN_INT = -2147483647; // -(2^31)-1
+
+void
+float_array_to_int(const float *in, int *out, float scale, int nsamples)
+{
+  for (int i = 0; i < nsamples; i++){
+    int64_t r = llrintf(scale * in[i]);
+    if (r < MIN_INT)
+      r = MIN_INT;
+    else if (r > MAX_INT)
+      r = MAX_INT;
+    out[i] = static_cast<int>(r);
+  }
+}