srsLTE/srslte/lib/resampling/decim.c

49 lines
1.3 KiB
C

/**
*
* \section COPYRIGHT
*
* Copyright 2013-2015 Software Radio Systems Limited
*
* \section LICENSE
*
* This file is part of the srsLTE library.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE 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 Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include <complex.h>
#include <math.h>
#include "srslte/resampling/decim.h"
#include "srslte/utils/debug.h"
/* Performs integer linear decimation by a factor of M */
void srslte_decim_c(cf_t *input, cf_t *output, int M, int len) {
int i;
for (i=0;i<len/M;i++) {
output[i] = input[i*M];
}
}
/* Performs integer linear decimation by a factor of M */
void srslte_decim_f(float *input, float *output, int M, int len) {
int i;
for (i=0;i<len/M;i++) {
output[i] = input[i*M];
}
}