Osmocom GSM/GPRS/EGPRS transceiver, originally forked from OpenBTS transceiver. For building SDR based GSM BTS with osmo-bts-trx.
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osmo-trx/Transceiver52M/arch/x86/convert_sse_4_1.h

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/*
* SSE type conversions
* Copyright (C) 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.
*/
#pragma once
/* 16*N 16-bit signed integer converted to single precision floats */
void _sse_convert_si16_ps_16n(float *restrict out,
const short *restrict in, int len);
/* 16*N 16-bit signed integer conversion with remainder */
void _sse_convert_si16_ps(float *restrict out,
const short *restrict in, int len);