diff options
| author | Johnathan Corgan <jcorgan@corganenterprises.com> | 2012-06-25 06:25:04 -0700 |
|---|---|---|
| committer | Johnathan Corgan <jcorgan@corganenterprises.com> | 2012-06-25 06:25:04 -0700 |
| commit | 31c61c16e2073f0c3f54a8d0523d8c4f10ca5dd2 (patch) | |
| tree | bf81e2f6ba3a342f32cd9425dfcdfadecfb6d1d6 /gr-blocks/lib/float_array_to_int.cc | |
| parent | 8c23d9f9ebfe04b60d59efc636c6d5b02baacc99 (diff) | |
blocks: added gr::blocks::float_to_int
Diffstat (limited to 'gr-blocks/lib/float_array_to_int.cc')
| -rw-r--r-- | gr-blocks/lib/float_array_to_int.cc | 46 |
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 0000000000..66b112c066 --- /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); + } +} |