mirror of
https://gitea.osmocom.org/cellular-infrastructure/osmo-trx.git
synced 2025-11-03 05:33:16 +00:00
43fedb656b
Take the chance to update some includes using files available in that subdir to have them ina more uniform way. Change-Id: Ibda3c54fd4dc3f6b845cc373f1a1e6b758c1ea82
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
|
|
* NEON scaling
|
|
* Copyright (C) 2012,2013 Thomas Tsou <tom@tsou.cc>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <malloc.h>
|
|
#include <string.h>
|
|
#include <mult.h>
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
void neon_cmplx_mul_4n(float *, float *, float *, int);
|
|
|
|
static void cmplx_mul_ps(float *out, float *a, float *b, int len)
|
|
{
|
|
float ai, aq, bi, bq;
|
|
|
|
for (int i = 0; i < len; i++) {
|
|
ai = a[2 * i + 0];
|
|
aq = a[2 * i + 1];
|
|
|
|
bi = b[2 * i + 0];
|
|
bq = b[2 * i + 1];
|
|
|
|
out[2 * i + 0] = ai * bi - aq * bq;
|
|
out[2 * i + 1] = ai * bq + aq * bi;
|
|
}
|
|
}
|
|
|
|
void mul_complex(float *out, float *a, float *b, int len)
|
|
{
|
|
#ifdef HAVE_NEON
|
|
if (len % 4)
|
|
cmplx_mul_ps(out, a, b, len);
|
|
else
|
|
neon_cmplx_mul_4n(out, a, b, len >> 2);
|
|
#else
|
|
cmplx_mul_ps(out, a, b, len);
|
|
#endif
|
|
}
|