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openairinterface5g/openair1/PHY/TOOLS/cmult_vv.c
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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface 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 of the License, or
(at your option) any later version.
OpenAirInterface 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 OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#include "defs.h"
//#include "MAC_INTERFACE/extern.h"
#ifdef USER_MODE
#include <stdio.h>
#endif
#ifndef EXPRESSMIMO_TARGET
static __m128i shift __attribute__ ((aligned(16)));
static __m128i m0,m1,m2,m4 __attribute__ ((aligned(16)));
//#define DEBUG_CMULT
int mult_cpx_vector(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements with repeated formatted output
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
/*
#ifdef USER_MODE
int16_t *temps;
int *tempd;
#endif
*/
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
// __m128i temp;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
//msg("mult_cpx_vector: iteration %d, x1=%p, x2=%p, y=%p\n",i,x1_128,x2_128,y_128);
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
*/
m0 = _mm_madd_epi16(x1_128[0],x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
// temp = m0;
// tempd = &temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
// temp = m0;
// tempd = (int *)&temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[0] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
/*
#ifdef USER_MODE
temps = (int16_t *)&y_128[0];
printf("y0 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif USER_MODE
*/
m0 = _mm_madd_epi16(x1_128[1],x2_128[1]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_madd_epi16(x1_128[2],x2_128[2]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[2] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_madd_epi16(x1_128[3],x2_128[3]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[3] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
x1_128+=4;
x2_128+=4;
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector_unprepared(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements with repeated formatted output
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 Im0 Re0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
#ifdef DEBUG_CMULT
int16_t *temps;
int *tempd;
#endif
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
__m128i shuf_x2;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
//msg("mult_cpx_vector: iteration %d, x1=%p, x2=%p, y=%p\n",i,x1_128,x2_128,y_128);
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
*/
shuf_x2 = _mm_shufflelo_epi16(x2_128[0],_MM_SHUFFLE(2,3,0,1));
shuf_x2 = _mm_shufflehi_epi16(shuf_x2,_MM_SHUFFLE(2,3,0,1));
#ifdef DEBUG_CMULT
tempd = &shuf_x2;
printf("shuf_x2 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_madd_epi16(x1_128[0],x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
// temp = m0;
// tempd = &temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
// temp = m0;
// tempd = (int *)&temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[0] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
/*
#ifdef USER_MODE
temps = (int16_t *)&y_128[0];
printf("y0 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif USER_MODE
*/
m0 = _mm_madd_epi16(x1_128[1],x2_128[1]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_madd_epi16(x1_128[2],x2_128[2]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[2] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_madd_epi16(x1_128[3],x2_128[3]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[3] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
x1_128+=4;
x2_128+=4;
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
//__attribute__ ((force_align_arg_pointer))
int mult_cpx_vector_norep(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements with normal formatted output
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re1 Im1|,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy). WARNING: N>=4;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1,m2,m3;
#ifdef DEBUG_CMULT
__m128i temp;
int *tempd;
int16_t *temps;
#endif //DEBUG_CMULT
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
//__m128i temp;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
#ifndef USER_MODE
//debug_msg("mult_cpx_vector_norep: x1 %p, x2 %p, y %p, shift %d\n",x1,x2,y,output_shift);
#endif
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
m0 = _mm_madd_epi16(x1_128[0],x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
temp = m0;
tempd = &temp;
printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m1 = m0;
m0 = _mm_madd_epi16(x1_128[1],x2_128[1]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)&x1_128[1];
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)&x2_128[1];
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[1] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[1] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m2 = m0;
// m2 = _mm_packs_epi32(m2,m0); // 1- pack in a 128 bit register [re im re im]
// print_shorts(m2,"m2");
y_128[0] = _mm_packs_epi32(m1,m2); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_madd_epi16(x1_128[2],x2_128[2]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)&x1_128[2];
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)&x2_128[2];
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif //DEBUG_CMULT
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[2] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[2] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m1 = m0;
// m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_madd_epi16(x1_128[3],x2_128[3]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)&x1_128[3];
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)&x2_128[3];
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temp = m0;
tempd = (int *)&temp;
printf("m0[3] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[3] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m2 = m0;
// m2 = _mm_packs_epi32(m2,m0); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_packs_epi32(m1,m2); // 1- pack in a 128 bit register [re im re im]
x1_128+=4;
x2_128+=4;
y_128 +=2;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector_norep_unprepared_conjx2(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements with normal formatted output, conjugate x1
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re0 Im0|,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy). WARNING: N>=4;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1,m2,m3;
short conj_x2s[8] __attribute__((aligned(16))) = {1,1,-1,1,1,1,-1,1};
__m128i *conj_x2 = (__m128i *)&conj_x2s[0];
#ifdef DEBUG_CMULT
__m128i temp;
int *tempd;
int16_t *temps;
#endif //DEBUG_CMULT
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
__m128i shuf_x2;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
#ifdef DEBUG_CMULT
printf("**i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
shuf_x2 = _mm_shufflelo_epi16(x2_128[0],_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_shufflehi_epi16(shuf_x2,_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_sign_epi16(shuf_x2,*conj_x2);
#ifdef DEBUG_CMULT
temps = &shuf_x2;
printf("shuf_x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif //DEBUG_CMULT
m0 = _mm_madd_epi16(x1_128[0],shuf_x2); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
temp = m0;
tempd = &temp;
printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m1 = m0;
shuf_x2 = _mm_shufflelo_epi16(x2_128[1],_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_shufflehi_epi16(shuf_x2,_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_sign_epi16(shuf_x2,*conj_x2);
m0 = _mm_madd_epi16(x1_128[1],shuf_x2); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)&x1_128[1];
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)&x2_128[1];
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[1] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[1] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m2 = m0;
// m2 = _mm_packs_epi32(m2,m0); // 1- pack in a 128 bit register [re im re im]
// print_shorts(m2,"m2");
y_128[0] = _mm_packs_epi32(m1,m2); // 1- pack in a 128 bit register [re im re im]
shuf_x2 = _mm_shufflelo_epi16(x2_128[2],_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_shufflehi_epi16(shuf_x2,_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_sign_epi16(shuf_x2,*conj_x2);
m0 = _mm_madd_epi16(x1_128[2],shuf_x2); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)&x1_128[2];
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)&x2_128[2];
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif //DEBUG_CMULT
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[2] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[2] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m1 = m0;
// m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
shuf_x2 = _mm_shufflelo_epi16(x2_128[3],_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_shufflehi_epi16(shuf_x2,_MM_SHUFFLE(2,3,1,0));
shuf_x2 = _mm_sign_epi16(shuf_x2,*conj_x2);
m0 = _mm_madd_epi16(x1_128[3],shuf_x2); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
#ifdef DEBUG_CMULT
printf("i=%d\n",i);
temps = (int16_t *)&x1_128[3];
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)&x2_128[3];
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temp = m0;
tempd = (int *)&temp;
printf("m0[3] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
#ifdef DEBUG_CMULT
temp = m0;
tempd = (int *)&temp;
printf("m0[3] : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif //DEBUG_CMULT
m2 = m0;
// m2 = _mm_packs_epi32(m2,m0); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_packs_epi32(m1,m2); // 1- pack in a 128 bit register [re im re im]
x1_128+=4;
x2_128+=4;
y_128 +=2;
}
_mm_empty();
_m_empty();
return(0);
}
static __m128i norep_tmp32 __attribute__ ((aligned(16)));
//__attribute__ ((force_align_arg_pointer))
int mult_cpx_vector_norep2(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements with normal formatted output and no loop unrollin
// x1 - input 1 in the format |Re0 Im0 Re0 Im0 Re1 Im1 Re1 Im1|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re1 Im1|,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy). WARNING: N>=2;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1,m2,m3;
/*
#ifdef USER_MODE
__m128i temp;
int *tempd;
int16_t *temps;
#endif
*/
__m128i *x1_128;
__m128i *x2_128;
int *y_32 = (int*)y;
// __m128i temp;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
#ifndef USER_MODE
//debug_msg("mult_cpx_vector_norep2: x1 %p, x2 %p, y %p, shift %d, N %d\n",x1,x2,y,output_shift,N);
#endif
// we compute 2 cpx multiply for each loop
for(i=0;i<(N>>1);i++)
{
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
*/
m0 = _mm_madd_epi16(x1_128[0],x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
/*
temp = m0;
tempd = &temp;
printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
*/
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
/*
temp = m0;
tempd = (int *)&temp;
printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
*/
norep_tmp32 = _mm_packs_epi32(m0,m0); // Re0 Im0 Re1 Im1 Re0 Im0 Re1 Im1
/*
#ifdef USER_MODE
printf("tmp : %d,%d,%d,%d\n",((int16_t *)&tmp32)[0],((int16_t *)&tmp32)[1],((int16_t *)&tmp32)[2],((int16_t *)&tmp32)[3]);
#endif
*/
y_32[0] = ((int *)&norep_tmp32)[0]; // 1- pack in a 128 bit register [re im re im]
y_32[1] = ((int *)&norep_tmp32)[1]; // 1- pack in a 128 bit register [re im re im]
x1_128+=1;
x2_128+=1;
y_32 +=2;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector_norep_conj(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements after conjugating and shuffling x1
// x1 - input 1 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x1 with a dynamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dynamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re1 Im1|,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy). WARNING: N>=4;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1,m2,m4;
/*
#ifdef USER_MODE
int16_t *temps;
int *tempw;
#endif
*/
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
// __m128i temp;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// printf("mult_cpx_vector_norep: shift %d\n",output_shift);
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
*/
m4 = _mm_shufflelo_epi16(x1_128[0],_MM_SHUFFLE(1,0,1,0));
m4 = _mm_shufflehi_epi16(m4,_MM_SHUFFLE(1,0,1,0));
/*
temps = (int16_t *)&m4;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
*/
m0 = _mm_madd_epi16(m4,x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
// temp = m0;
// tempd = &temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
/*
tempw = (int *)&m0;
printf("m0[0] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
/*
tempw = (int *)&m0;
printf("m0[0] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
// temp = m0;
// tempd = (int *)&temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m1 = m0;
m4 = _mm_shufflelo_epi16(x1_128[1],_MM_SHUFFLE(1,0,1,0));
m4 = _mm_shufflehi_epi16(m4,_MM_SHUFFLE(1,0,1,0));
m0 = _mm_madd_epi16(m4,x2_128[1]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
/*
tempw = (int *)&m0;
printf("m0[1] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
/*
tempw = (int *)&m0;
printf("m0[1] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m2 = m0;
// m2 = _mm_packs_epi32(m2,m0); // 1- pack in a 128 bit register [re im re im]
// print_shorts(m2,"m2");
y_128[0] = _mm_packs_epi32(m1,m2); // 1- pack in a 128 bit register [re im re im]
m4 = _mm_shufflelo_epi16(x1_128[2],_MM_SHUFFLE(1,0,1,0));
m4 = _mm_shufflehi_epi16(m4,_MM_SHUFFLE(1,0,1,0));
m0 = _mm_madd_epi16(m4,x2_128[2]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
/*
tempw = (int *)&m0;
printf("m0[2] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
/*
tempw = (int *)&m0;
printf("m0[2] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m1 = m0;
// m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
m4 = _mm_shufflelo_epi16(x1_128[3],_MM_SHUFFLE(1,0,1,0));
m4 = _mm_shufflehi_epi16(m4,_MM_SHUFFLE(1,0,1,0));
m0 = _mm_madd_epi16(m4,x2_128[3]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
/*
tempw = (int *)&m0;
printf("m0[3] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
/*
tempw = (int *)&m0;
printf("m0[3] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
*/
m2 = m0;
// m2 = _mm_packs_epi32(m2,m0); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_packs_epi32(m1,m2); // 1- pack in a 128 bit register [re im re im]
x1_128+=4;
x2_128+=4;
y_128 +=2;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector_norep_conj2(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements after conjugating and shuffling x1
// x1 - input 1 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x1 with a dynamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dynamic of 14 bit maximum
///
// y - output in the format |Re0 Im0 Re1 Im1|,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy). WARNING: N>=2;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1,m2,m4;
__m128i tmp32;
__m128i *x1_128;
__m128i *x2_128;
int *y_32 = (int *)&y[0];
// __m128i temp,*tempd;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
// printf("mult_cpx_vector_norep: shift %d\n",output_shift);
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>1);i++)
{
/*
//#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
//#endif
*/
// conjuaget and shuffle x1
m4 = _mm_shufflelo_epi16(x1_128[0],_MM_SHUFFLE(1,0,1,0));
m4 = _mm_shufflehi_epi16(m4,_MM_SHUFFLE(1,0,1,0));
/*
temps = (int16_t *)&m4;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
*/
m0 = _mm_madd_epi16(m4,x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
// tempw = (int *)&m0;
// printf("m0[1] : %d,%d,%d,%d\n",tempw[0],tempw[1],tempw[2],tempw[3]);
tmp32 = _mm_packs_epi32(m0,m0); // Re0 Im0 Re1 Im1 Re0 Im0 Re1 Im1
// printf("tmp : %d,%d,%d,%d\n",((int16_t *)&tmp32)[0],((int16_t *)&tmp32)[1],((int16_t *)&tmp32)[2],((int16_t *)&tmp32)[3]);
y_32[0] = ((int *)&tmp32)[0]; // 1- pack in a 128 bit register [re im re im]
y_32[1] = ((int *)&tmp32)[1]; // 1- pack in a 128 bit register [re im re im]
x1_128+=1;
x2_128+=1;
y_32 +=2;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector2(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
//
// y - output in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N must be a multiple of 2;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1;
/*
#ifdef USER_MODE
int16_t *temps;
int *tempd;
#endif
*/
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
// __m128i temp;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
for(i=0;i<(N>>1);i++)
{
/* #ifdef USER_MODE */
/* printf("i=%d\n",i); */
/* temps = (int16_t *)x1_128; */
/* printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]); */
/* temps = (int16_t *)x2_128; */
/* printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]); */
/* #endif */
m0 = _mm_madd_epi16(x1_128[i],x2_128[i]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
// temp = m0;
// tempd = &temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
// temp = m0;
// tempd = (int *)&temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
y_128[i] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector_add(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
int output_shift)
{
// Multiply elementwise two complex vectors of N elements and add it to y
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
//
// y - output in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
// log2_amp - increase the output amplitude by a factor 2^log2_amp (default is 0)
// WARNING: log2_amp>0 can cause overflow!!
uint32_t i; // loop counter
//register __m128i m0,m1;
/*
#ifdef USER_MODE
int16_t *temps;
int *tempd;
__m128i temp;
#endif
*/
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
shift = _mm_cvtsi32_si128(output_shift);
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
//unroll 0
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
*/
m0 = _mm_madd_epi16(x1_128[0],x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
// temp = m0;
// tempd = &temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
// temp = m0;
// tempd = (int *)&temp;
// printf("m0 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
m0 = _mm_packs_epi32(m0,m0); // 1- pack in a 128 bit register [re im re im]
m0 = _mm_unpacklo_epi32(m0,m0); // 1- pack in a 128 bit register [re im re im]
y_128[0] = _mm_add_epi16(m0,y_128[0]);
// temps = (int16_t *)&y_128[0];
// printf("y0 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
//unroll 1
m0 = _mm_madd_epi16(x1_128[1],x2_128[1]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
m1 = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_add_epi16(m1,y_128[1]);
//unroll 2
m0 = _mm_madd_epi16(x1_128[2],x2_128[2]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
m1 = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128[2] = _mm_add_epi16(m1,y_128[2]);
//unroll 3
m0 = _mm_madd_epi16(x1_128[3],x2_128[3]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
m0 = _mm_sra_epi32(m0,shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = m0;
m1 = _mm_packs_epi32(m1,m0); // 1- pack in a 128 bit register [re im re im]
m1 = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128[3] = _mm_add_epi16(m1,y_128[3]);
x1_128+=4;
x2_128+=4;
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_cpx_vector_add32(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N)
{
// Multiply elementwise two complex vectors of N elements and add it to y
// x1 - input 1 in the format |Re0 Im0 Re0 Im0|,......,|Re(N-1) Im(N-1) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 15 bit maximum
//
// x2 - input 2 in the format |Re0 -Im0 Im0 Re0|,......,|Re(N-1) -Im(N-1) Im(N-1) Re(N-1)|
// We assume x2 with a dinamic of 14 bit maximum
//
// y - output in the format |Re0 (32bit) Im0 (32bit) |,......,|Re(N-1) (32bit) Im(N-1) (32bit)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
uint32_t i; // loop counter
//register __m128i m0;
/*
#ifdef USER_MODE
int16_t *temps;
int *tempd;
__m128i temp;
#endif
*/
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
//unroll 0
m0 = _mm_madd_epi16(x1_128[0],x2_128[0]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0
y_128[0] = _mm_add_epi32(y_128[0],m0);
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
tempd = (int *)y_128;
printf("y : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
#endif
*/
m0 = _mm_madd_epi16(x1_128[1],x2_128[1]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
y_128[1] = _mm_add_epi32(y_128[1],m0);
m0 = _mm_madd_epi16(x1_128[2],x2_128[2]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
y_128[2] = _mm_add_epi32(y_128[2],m0);
m0 = _mm_madd_epi16(x1_128[3],x2_128[3]); //pmaddwd_r2r(mm1,mm0); // 1- compute x1[0]*x2[0]
y_128[3] = _mm_add_epi32(y_128[3],m0);
x1_128+=4;
x2_128+=4;
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
int mult_vector32(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N)
{
// Multiply elementwise two real vectors of N elements y = real(x1).*real(x2)
// x1 - input 1 in the format |Re(0) xxx Re(1) xxx|,......,|Re(N-2) xxx Re(N-1) xxx|
// We assume x1 with a dinamic of 31 bit maximum
//
// x1 - input 2 in the format |Re(0) xxx Re(2) xxx|,......,|Re(N-2) xxx Re(N-1) xxx|
// We assume x2 with a dinamic of 31 bit maximum
//
// y - output in the format |Re0 (64bit) |,......,|Re(N-1) (64bit)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
uint32_t i; // loop counter
__m128i *x1_128;
__m128i *x2_128;
__m128i *y_128;
x1_128 = (__m128i *)&x1[0];
x2_128 = (__m128i *)&x2[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
y_128[0] = _mm_mul_epu32(x1_128[0],x2_128[0]);
/*
#ifdef USER_MODE
printf("i=%d\n",i);
tempd = (int *)x1_128;
printf("x1 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
tempd = (int *)x2_128;
printf("x2 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
// tempd = (int *)y_128;
// printf("y : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
templ = (long long *)y_128;
printf("y : %lld,%lld\n",templ[0],templ[1]);
#endif
*/
y_128[1] = _mm_mul_epu32(x1_128[1],x2_128[1]);
y_128[2] = _mm_mul_epu32(x1_128[2],x2_128[2]);
y_128[3] = _mm_mul_epu32(x1_128[3],x2_128[3]);
x1_128+=4;
x2_128+=4;
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
/*
The following code does not work, because there is no signed 32bit multiplication intrinsic. It only works for unsigned values
int mult_cpx_vector32_conj(int16_t *x,
int16_t *y,
uint32_t N)
{
// elementwise multiplication of two complex vectors of N elements such that y = x * conj(x) = real(x)*real(x)+imag(x)*imag(x)
// x - input in the format |Re(0) Im(0) Re(1) Im(1) |,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
// We assume x with a dinamic of 31 bit maximum
//
// y - output in the format |Re0 (64bit) |,......,|Re(N-1) (64bit)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
uint32_t i; // loop counter
#ifdef USER_MODE
char *tempc;
int16_t *temps;
int *tempd;
long long *templ;
__m128i temp;
#endif
__m128i *x_128;
__m128i *y_128;
__m128i m0,m1,m2,m3;
x_128 = (__m128i *)&x[0];
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
// Re(a)*Re(b)
m0 = _mm_mul_epu32(x_128[0],x_128[0]);
// Im(a)*Im(b)
m1 = _mm_shuffle_epi32(x_128[0],_MM_SHUFFLE(2,3,0,1));
m3 = _mm_mul_epu32(m1,m1);
// Re(a)*Re(b)+Im(a)*Im(b)
y_128[0] = _mm_add_epi64(m0,m3);
#ifdef USER_MODE
printf("i=%d\n",i);
tempd = (int *)x_128;
printf("x : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
templ = (long long *)&m0;
printf("m0 : %lld,%lld\n",templ[0],templ[1]);
tempd = (int *)&m1;
printf("m1 : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
templ = (long long *)&m3;
printf("m3 : %lld,%lld\n",templ[0],templ[1]);
// tempd = (int *)y_128;
// printf("y : %d,%d,%d,%d\n",tempd[0],tempd[1],tempd[2],tempd[3]);
templ = (long long *)y_128;
printf("y : %lld,%lld\n",templ[0],templ[1]);
#endif
// Re(a)*Re(b)
m0 = _mm_mul_epu32(x_128[1],x_128[1]);
// Im(a)*Im(b)
m1 = _mm_shuffle_epi32(x_128[1],_MM_SHUFFLE(1,0,3,2));
m3 = _mm_mul_epu32(m1,m1);
// Re(a)*Re(b)+Im(a)*Im(b)
y_128[1] = _mm_add_epi64(m0,m3);
// Re(a)*Re(b)
m0 = _mm_mul_epu32(x_128[2],x_128[2]);
// Im(a)*Im(b)
m1 = _mm_shuffle_epi32(x_128[2],_MM_SHUFFLE(1,0,3,2));
m3 = _mm_mul_epu32(m1,m1);
// Re(a)*Re(b)+Im(a)*Im(b)
y_128[2] = _mm_add_epi64(m0,m3);
// Re(a)*Re(b)
m0 = _mm_mul_epu32(x_128[3],x_128[3]);
// Im(a)*Im(b)
m1 = _mm_shuffle_epi32(x_128[3],_MM_SHUFFLE(1,0,3,2));
m3 = _mm_mul_epu32(m1,m1);
// Re(a)*Re(b)+Im(a)*Im(b)
y_128[3] = _mm_add_epi64(m0,m3);
x_128+=4;
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
*/
int mult_cpx_vector32_conj(int16_t *x,
int16_t *y,
uint32_t N)
{
// Elementwise multiplication of two complex vectors of N elements such that y = x * conj(x) = real(x)*real(x)+imag(x)*imag(x)
// x - input in the format |Re(0) Im(0) Re(1) Im(1) |,......,|Re(N-2) Im(N-2) Re(N-1) Im(N-1)|
// We assume x1 with a dinamic of 31 bit maximum
//
// y - output in the format |Re0 (64bit) |,......,|Re(N-1) (64bit)|
//
// N - the size f the vectors (this function does N cpx mpy. WARNING: N>=4;
//
uint32_t i; // loop counter
int *xi = (int*) x;
long long int *yl = (long long int*) y;
long long int temp1,temp2;
for(i=0;i<N/2;i++)
{
// Re(a)*Re(b)
temp1 = ((long long int) xi[0])* ((long long int) xi[0]);
// Im(a)*Im(b)
temp2 = ((long long int) xi[1])* ((long long int) xi[1]);
yl[0] = temp1+temp2;
temp1 = ((long long int) xi[2])* ((long long int) xi[2]);
temp2 = ((long long int) xi[3])* ((long long int) xi[3]);
yl[1] = temp1+temp2;
/*
#ifdef USER_MODE
printf("i=%d\n",i);
printf("x1 : %d,%d,%d,%d\n",x1i[0],x1i[1],x1i[2],x1i[3]);
printf("x2 : %d,%d,%d,%d\n",x2i[0],x2i[1],x2i[2],x2i[3]);
printf("temp : %lld,%lld\n",temp1,temp2);
printf("y : %lld,%lld\n",yl[0],yl[1]);
#endif
*/
xi+=4;
yl +=2;
}
return(0);
}
int shift_and_pack(int16_t *y,
uint32_t N,
int output_shift)
{
uint32_t i; // loop counter
//register __m128i m0,m1;
/*
#ifdef USER_MODE
int16_t *temps;
int *tempd;
__m128i temp;
#endif
*/
__m128i *y_128;
shift = _mm_cvtsi32_si128(output_shift);
y_128 = (__m128i *)&y[0];
// we compute 4 cpx multiply for each loop
for(i=0;i<(N>>3);i++)
{
/*
#ifdef USER_MODE
printf("i=%d\n",i);
temps = (int16_t *)x1_128;
printf("x1 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
temps = (int16_t *)x2_128;
printf("x2 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
#endif
*/
//unroll 0
m0 = _mm_sra_epi32(y_128[0],shift); // 1- shift right by shift in order to compensate for the input amplitude
m0 = _mm_packs_epi32(m0,m0); // 1- pack in a 128 bit register [re im re im]
y_128[0] = _mm_unpacklo_epi32(m0,m0); // 1- pack in a 128 bit register [re im re im]
// temps = (int16_t *)&y_128[0];
// printf("y0 : %d,%d,%d,%d,%d,%d,%d,%d\n",temps[0],temps[1],temps[2],temps[3],temps[4],temps[5],temps[6],temps[7]);
//unroll 1
m1 = _mm_sra_epi32(y_128[1],shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = _mm_packs_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128[1] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
//unroll 2
m1 = _mm_sra_epi32(y_128[2],shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = _mm_packs_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128[2] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
//unroll 3
m1 = _mm_sra_epi32(y_128[3],shift); // 1- shift right by shift in order to compensate for the input amplitude
m1 = _mm_packs_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128[3] = _mm_unpacklo_epi32(m1,m1); // 1- pack in a 128 bit register [re im re im]
y_128 +=4;
}
_mm_empty();
_m_empty();
return(0);
}
#ifdef MAIN
#define L 16
main () {
int16_t input[256] __attribute__((aligned(16)));
int16_t input2[256] __attribute__((aligned(16)));
int16_t output[256] __attribute__((aligned(16)));
int i;
input[0] = 100;
input[1] = 200;
input[2] = -200;
input[3] = 100;
input[4] = 1000;
input[5] = 2000;
input[6] = -2000;
input[7] = 1000;
input[8] = 100;
input[9] = 200;
input[10] = -200;
input[11] = 100;
input[12] = 1000;
input[13] = 2000;
input[14] = -2000;
input[15] = 1000;
input2[0] = 1;
input2[1] = 2;
input2[2] = 1;
input2[3] = 2;
input2[4] = 10;
input2[5] = 20;
input2[6] = 10;
input2[7] = 20;
input2[8] = 1;
input2[9] = 2;
input2[10] = 1;
input2[11] = 2;
input2[12] = 1000;
input2[13] = 2000;
input2[14] = 1000;
input2[15] = 2000;
mult_cpx_vector32_conj(input,output,8);
}
#endif //MAIN
#else //EXPRESSMIMO_TARGET
/*
int mult_cpx_vector(int16_t *x1,
int16_t *x2,
int16_t *y,
uint32_t N,
uint16_t output_shift)
{
}
*/
#endif //EXPRESSMIMO_TARGET