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Merge branch 'next' of https://github.com/carlesfernandez/gnss-sdr into

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# Conflicts:
#	src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic.h
#	src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn.h
This commit is contained in:
Carles Fernandez 2016-02-15 20:23:00 +01:00
commit 8991b455fb
5 changed files with 82 additions and 86 deletions
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2
README.md
View File

@ -409,7 +409,7 @@ Install Armadillo and dependencies:
$ brew tap homebrew/science
$ brew install cmake hdf5 arpack superlu
$ brew install armadillo
$ brew install glog gflags
$ brew install glog gflags gnutls
~~~~~~
#### Build GNSS-SDR

16
build/.gitignore vendored
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@ -1,12 +1,4 @@
*~
.*.swp
docs/doxygen/Doxyfile
docs/html
docs/latex
docs/GNSS-SDR_manual.pdf
src/tests/data/output.dat
thirdparty/
.project
.cproject
/install
/.DS_Store
# Ignore everything in this directory
*
# Except this file
!.gitignore

54
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_x2_dot_prod_16ic_xn.h
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@ -78,7 +78,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_generic(lv_16sc_t* resu
\param[in] num_a_vectors Number of vectors to be multiplied by the reference vector and accumulated
\param[in] num_points The Number of complex values to be multiplied together, accumulated and stored into result
*/
static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* out, const lv_16sc_t* in_common, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* result, const lv_16sc_t* in_common, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
{
lv_16sc_t dotProduct = lv_cmake(0,0);
@ -86,7 +86,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* out,
const lv_16sc_t** _in_a = in_a;
const lv_16sc_t* _in_common = in_common;
lv_16sc_t* _out = out;
lv_16sc_t* _out = result;
if (sse_iters > 0)
{
@ -100,7 +100,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* out,
realcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
imagcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
__m128i a,b,c, c_sr, mask_imag, mask_real, real, imag, imag1,imag2, b_sl, a_sl, result;
__m128i a, b, c, c_sr, mask_imag, mask_real, real, imag, imag1, imag2, b_sl, a_sl, results;
mask_imag = _mm_set_epi8(255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0);
mask_real = _mm_set_epi8(0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255);
@ -116,10 +116,10 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* out,
{
a = _mm_load_si128((__m128i*)&(_in_a[n_vec][number*4])); //load (2 byte imag, 2 byte real) x 4 into 128 bits reg
c = _mm_mullo_epi16 (a, b); // a3.i*b3.i, a3.r*b3.r, ....
c = _mm_mullo_epi16(a, b); // a3.i*b3.i, a3.r*b3.r, ....
c_sr = _mm_srli_si128 (c, 2); // Shift a right by imm8 bytes while shifting in zeros, and store the results in dst.
real = _mm_subs_epi16 (c, c_sr);
c_sr = _mm_srli_si128(c, 2); // Shift a right by imm8 bytes while shifting in zeros, and store the results in dst.
real = _mm_subs_epi16(c, c_sr);
b_sl = _mm_slli_si128(b, 2); // b3.r, b2.i ....
a_sl = _mm_slli_si128(a, 2); // a3.r, a2.i ....
@ -129,23 +129,23 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* out,
imag = _mm_adds_epi16(imag1, imag2);
realcacc[n_vec] = _mm_adds_epi16 (realcacc[n_vec], real);
imagcacc[n_vec] = _mm_adds_epi16 (imagcacc[n_vec], imag);
realcacc[n_vec] = _mm_adds_epi16(realcacc[n_vec], real);
imagcacc[n_vec] = _mm_adds_epi16(imagcacc[n_vec], imag);
}
_in_common += 4;
}
for (int n_vec=0;n_vec<num_a_vectors;n_vec++)
for (int n_vec = 0; n_vec < num_a_vectors; n_vec++)
{
realcacc[n_vec] = _mm_and_si128 (realcacc[n_vec], mask_real);
imagcacc[n_vec] = _mm_and_si128 (imagcacc[n_vec], mask_imag);
realcacc[n_vec] = _mm_and_si128(realcacc[n_vec], mask_real);
imagcacc[n_vec] = _mm_and_si128(imagcacc[n_vec], mask_imag);
result = _mm_or_si128 (realcacc[n_vec], imagcacc[n_vec]);
results = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
_mm_store_si128((__m128i*)dotProductVector, result); // Store the results back into the dot product vector
_mm_store_si128((__m128i*)dotProductVector, results); // Store the results back into the dot product vector
dotProduct = lv_cmake(0,0);
for (int i = 0; i<4; ++i)
for (int i = 0; i < 4; ++i)
{
dotProduct = lv_cmake(sat_adds16i(lv_creal(dotProduct), lv_creal(dotProductVector[i])),
sat_adds16i(lv_cimag(dotProduct), lv_cimag(dotProductVector[i])));
@ -181,7 +181,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(lv_16sc_t* out,
\param[in] num_a_vectors Number of vectors to be multiplied by the reference vector and accumulated
\param[in] num_points The Number of complex values to be multiplied together, accumulated and stored into result
*/
static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* out, const lv_16sc_t* in_common, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* result, const lv_16sc_t* in_common, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
{
lv_16sc_t dotProduct = lv_cmake(0,0);
@ -189,7 +189,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* out,
const lv_16sc_t** _in_a = in_a;
const lv_16sc_t* _in_common = in_common;
lv_16sc_t* _out = out;
lv_16sc_t* _out = result;
if (sse_iters > 0)
{
@ -203,7 +203,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* out,
realcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
imagcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
__m128i a,b,c, c_sr, mask_imag, mask_real, real, imag, imag1,imag2, b_sl, a_sl, result;
__m128i a,b,c, c_sr, mask_imag, mask_real, real, imag, imag1,imag2, b_sl, a_sl, results;
mask_imag = _mm_set_epi8(255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0);
mask_real = _mm_set_epi8(0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255);
@ -219,10 +219,10 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* out,
{
a = _mm_loadu_si128((__m128i*)&(_in_a[n_vec][number*4])); //load (2 byte imag, 2 byte real) x 4 into 128 bits reg
c = _mm_mullo_epi16 (a, b); // a3.i*b3.i, a3.r*b3.r, ....
c = _mm_mullo_epi16(a, b); // a3.i*b3.i, a3.r*b3.r, ....
c_sr = _mm_srli_si128 (c, 2); // Shift a right by imm8 bytes while shifting in zeros, and store the results in dst.
real = _mm_subs_epi16 (c, c_sr);
c_sr = _mm_srli_si128(c, 2); // Shift a right by imm8 bytes while shifting in zeros, and store the results in dst.
real = _mm_subs_epi16(c, c_sr);
b_sl = _mm_slli_si128(b, 2); // b3.r, b2.i ....
a_sl = _mm_slli_si128(a, 2); // a3.r, a2.i ....
@ -239,16 +239,16 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* out,
_in_common += 4;
}
for (int n_vec=0;n_vec<num_a_vectors;n_vec++)
for (int n_vec = 0; n_vec < num_a_vectors; n_vec++)
{
realcacc[n_vec] = _mm_and_si128(realcacc[n_vec], mask_real);
imagcacc[n_vec] = _mm_and_si128(imagcacc[n_vec], mask_imag);
result = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
results = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
_mm_storeu_si128((__m128i*)dotProductVector, result); // Store the results back into the dot product vector
_mm_storeu_si128((__m128i*)dotProductVector, results); // Store the results back into the dot product vector
dotProduct = lv_cmake(0,0);
for (int i = 0; i<4; ++i)
for (int i = 0; i < 4; ++i)
{
dotProduct = lv_cmake(sat_adds16i(lv_creal(dotProduct), lv_creal(dotProductVector[i])),
sat_adds16i(lv_cimag(dotProduct), lv_cimag(dotProductVector[i])));
@ -284,7 +284,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(lv_16sc_t* out,
\param[in] num_a_vectors Number of vectors to be multiplied by the reference vector and accumulated
\param[in] num_points The Number of complex values to be multiplied together, accumulated and stored into result
*/
static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_neon(lv_16sc_t* out, const lv_16sc_t* in_common, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_neon(lv_16sc_t* result, const lv_16sc_t* in_common, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
{
lv_16sc_t dotProduct = lv_cmake(0,0);
@ -292,7 +292,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_neon(lv_16sc_t* out, co
const lv_16sc_t** _in_a = in_a;
const lv_16sc_t* _in_common = in_common;
lv_16sc_t* _out = out;
lv_16sc_t* _out = result;
if (neon_iters > 0)
{
@ -319,7 +319,7 @@ static inline void volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_neon(lv_16sc_t* out, co
for (int n_vec = 0; n_vec < num_a_vectors; n_vec++)
{
a_val = vld2_s16((int16_t*)&(_in_a[n_vec][number*4])); //load (2 byte imag, 2 byte real) x 4 into 128 bits reg
//__builtin_prefetch(_in_a[n_vec] + 8);
//__builtin_prefetch(&_in_a[n_vec][number*4] + 8);
// multiply the real*real and imag*imag to get real result
// a0r*b0r|a1r*b1r|a2r*b2r|a3r*b3r

14
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic.h
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@ -49,9 +49,9 @@ static inline void volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic_generic(lv_16sc_t*
for(unsigned int n = 0; n < num_a_vectors; n++)
{
in_a[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
memcpy(in_a[n], in, sizeof(lv_16sc_t) * num_points);
memcpy((lv_16sc_t*)in_a[n], (lv_16sc_t*)in, sizeof(lv_16sc_t) * num_points);
}
//result = (lv_16sc_t*)calloc(num_points, sizeof(lv_16sc_t));
volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_generic(result, local_code, (const lv_16sc_t**) in_a, num_a_vectors, num_points);
for(unsigned int n = 0; n < num_a_vectors; n++)
@ -73,7 +73,7 @@ static inline void volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic_a_sse2(lv_16sc_t* r
in_a[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
memcpy((lv_16sc_t*)in_a[n], (lv_16sc_t*)in, sizeof(lv_16sc_t) * num_points);
}
//result = (lv_16sc_t*)calloc(num_points, sizeof(lv_16sc_t));
volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_a_sse2(result, local_code, (const lv_16sc_t**) in_a, num_a_vectors, num_points);
for(unsigned int n = 0; n < num_a_vectors; n++)
@ -94,9 +94,9 @@ static inline void volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic_u_sse2(lv_16sc_t* r
for(unsigned int n = 0; n < num_a_vectors; n++)
{
in_a[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t)*num_points, volk_gnsssdr_get_alignment());
memcpy(in_a[n], in, sizeof(lv_16sc_t)*num_points);
memcpy((lv_16sc_t*)in_a[n], (lv_16sc_t*)in, sizeof(lv_16sc_t)*num_points);
}
//result = (lv_16sc_t*)calloc(num_points, sizeof(lv_16sc_t));
volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_u_sse2(result, local_code, (const lv_16sc_t**) in_a, num_a_vectors, num_points);
for(unsigned int n = 0; n < num_a_vectors; n++)
@ -117,9 +117,9 @@ static inline void volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic_neon(lv_16sc_t* res
for(unsigned int n = 0; n < num_a_vectors; n++)
{
in_a[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t)*num_points, volk_gnsssdr_get_alignment());
memcpy(in_a[n], in, sizeof(lv_16sc_t)*num_points);
memcpy((lv_16sc_t*)in_a[n], (lv_16sc_t*)in, sizeof(lv_16sc_t)*num_points);
}
//result = (lv_16sc_t*)calloc(num_points, sizeof(lv_16sc_t));
volk_gnsssdr_16ic_x2_dot_prod_16ic_xn_neon(result, local_code, (const lv_16sc_t**) in_a, num_a_vectors, num_points);
for(unsigned int n = 0; n < num_a_vectors; n++)

82
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn.h
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@ -1,11 +1,14 @@
/*!
* \file volk_gnsssdr_16ic_x2_dot_prod_16ic_xn.h
* \brief Volk protokernel: multiplies N 16 bits vectors by a common vector phase rotated and accumulates the results in N 16 bits short complex outputs.
* \brief Volk protokernel: multiplies N 16 bits vectors by a common vector
* phase rotated and accumulates the results in N 16 bits short complex outputs.
* \authors <ul>
* <li> Javier Arribas, 2015. jarribas(at)cttc.es
* </ul>
*
* Volk protokernel that multiplies N 16 bits vectors by a common vector, which is phase-rotated by phase offset and phase increment, and accumulates the results in N 16 bits short complex outputs.
* Volk protokernel that multiplies N 16 bits vectors by a common vector, which is
* phase-rotated by phase offset and phase increment, and accumulates the results
* in N 16 bits short complex outputs.
* It is optimized to perform the N tap correlation process in GNSS receivers.
*
* -------------------------------------------------------------------------
@ -90,7 +93,7 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_generic(lv_16sc
\param[in] num_a_vectors Number of vectors to be multiplied by the reference vector and accumulated
\param[in] num_points The Number of complex values to be multiplied together, accumulated and stored into result
*/
static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_a_sse3(lv_16sc_t* out, const lv_16sc_t* in_common, const lv_32fc_t phase_inc, lv_32fc_t* phase, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_a_sse3(lv_16sc_t* result, const lv_16sc_t* in_common, const lv_32fc_t phase_inc, lv_32fc_t* phase, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
{
lv_16sc_t dotProduct = lv_cmake(0,0);
@ -98,7 +101,7 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_a_sse3(lv_16sc_
const lv_16sc_t** _in_a = in_a;
const lv_16sc_t* _in_common = in_common;
lv_16sc_t* _out = out;
lv_16sc_t* _out = result;
__VOLK_ATTR_ALIGNED(16) lv_16sc_t dotProductVector[4];
@ -110,7 +113,7 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_a_sse3(lv_16sc_
realcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
imagcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
__m128i a, b, c, c_sr, mask_imag, mask_real, real, imag, imag1,imag2, b_sl, a_sl, result;
__m128i a, b, c, c_sr, mask_imag, mask_real, real, imag, imag1, imag2, b_sl, a_sl, results;
mask_imag = _mm_set_epi8(255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0);
mask_real = _mm_set_epi8(0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255);
@ -205,9 +208,9 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_a_sse3(lv_16sc_
realcacc[n_vec] = _mm_and_si128(realcacc[n_vec], mask_real);
imagcacc[n_vec] = _mm_and_si128(imagcacc[n_vec], mask_imag);
result = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
results = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
_mm_store_si128((__m128i*)dotProductVector, result); // Store the results back into the dot product vector
_mm_store_si128((__m128i*)dotProductVector, results); // Store the results back into the dot product vector
dotProduct = lv_cmake(0,0);
for (int i = 0; i < 4; ++i)
{
@ -252,7 +255,7 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_a_sse3(lv_16sc_
\param[in] num_a_vectors Number of vectors to be multiplied by the reference vector and accumulated
\param[in] num_points The Number of complex values to be multiplied together, accumulated and stored into result
*/
static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_u_sse3(lv_16sc_t* out, const lv_16sc_t* in_common, const lv_32fc_t phase_inc, lv_32fc_t* phase, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_u_sse3(lv_16sc_t* result, const lv_16sc_t* in_common, const lv_32fc_t phase_inc, lv_32fc_t* phase, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
{
lv_16sc_t dotProduct = lv_cmake(0,0);
@ -260,8 +263,8 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_u_sse3(lv_16sc_
const lv_16sc_t** _in_a = in_a;
const lv_16sc_t* _in_common = in_common;
lv_16sc_t* _out = out;
lv_16sc_t* _out = result;
__VOLK_ATTR_ALIGNED(16) lv_16sc_t dotProductVector[4];
//todo dyn mem reg
@ -272,7 +275,8 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_u_sse3(lv_16sc_
realcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
imagcacc = (__m128i*)calloc(num_a_vectors, sizeof(__m128i)); //calloc also sets memory to 0
__m128i a, b, c, c_sr, mask_imag, mask_real, real, imag, imag1, imag2, b_sl, a_sl, result;
__m128i a, b, c, c_sr, mask_imag, mask_real, real, imag, imag1, imag2, b_sl, a_sl, results;
mask_imag = _mm_set_epi8(255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0);
mask_real = _mm_set_epi8(0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255);
@ -367,9 +371,9 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_u_sse3(lv_16sc_
realcacc[n_vec] = _mm_and_si128 (realcacc[n_vec], mask_real);
imagcacc[n_vec] = _mm_and_si128 (imagcacc[n_vec], mask_imag);
result = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
results = _mm_or_si128(realcacc[n_vec], imagcacc[n_vec]);
_mm_storeu_si128((__m128i*)dotProductVector, result); // Store the results back into the dot product vector
_mm_storeu_si128((__m128i*)dotProductVector, results); // Store the results back into the dot product vector
dotProduct = lv_cmake(0,0);
for (int i = 0; i < 4; ++i)
{
@ -414,13 +418,13 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_u_sse3(lv_16sc_
\param[in] num_a_vectors Number of vectors to be multiplied by the reference vector and accumulated
\param[in] num_points The Number of complex values to be multiplied together, accumulated and stored into result
*/
static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_neon(lv_16sc_t* out, const lv_16sc_t* in_common, const lv_32fc_t phase_inc, lv_32fc_t* phase, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_neon(lv_16sc_t* result, const lv_16sc_t* in_common, const lv_32fc_t phase_inc, lv_32fc_t* phase, const lv_16sc_t** in_a, int num_a_vectors, unsigned int num_points)
{
const unsigned int neon_iters = num_points / 4;
const lv_16sc_t** _in_a = in_a;
const lv_16sc_t* _in_common = in_common;
lv_16sc_t* _out = out;
lv_16sc_t* _out = result;
lv_16sc_t tmp16_, tmp;
lv_32fc_t tmp32_;
@ -446,19 +450,18 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_neon(lv_16sc_t*
float32x4_t _phase_real = vld1q_f32(__phase_real);
float32x4_t _phase_imag = vld1q_f32(__phase_imag);
int16x4x2_t a_val, c_val;
int16x4x2_t a_val, b_val, c_val;
__VOLK_ATTR_ALIGNED(16) lv_16sc_t dotProductVector[4];
float32x4_t half = vdupq_n_f32(0.5f);
int16x4x2_t tmp16;
int32x4x2_t tmp32i;
float32x4x2_t tmp32f, tmp_real, tmp_imag;
float32x4x2_t tmp32f, tmp32_real, tmp32_imag;
float32x4_t sign, PlusHalf, Round;
int16x4x2_t* accumulator;
accumulator = (int16x4x2_t*)calloc(num_a_vectors, sizeof(int16x4x2_t));
int16x4x2_t tmp_real16, tmp_imag16;
for(int n_vec = 0; n_vec < num_a_vectors; n_vec++)
{
accumulator[n_vec].val[0] = vdup_n_s16(0);
@ -481,13 +484,14 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_neon(lv_16sc_t*
tmp32f.val[1] = vcvtq_f32_s32(tmp32i.val[1]);
/* complex multiplication of four complex samples (float 32 bits each component) */
tmp_real.val[0] = vmulq_f32(tmp32f.val[0], _phase_real);
tmp_real.val[1] = vmulq_f32(tmp32f.val[1], _phase_imag);
tmp_imag.val[0] = vmulq_f32(tmp32f.val[0], _phase_imag);
tmp_imag.val[1] = vmulq_f32(tmp32f.val[1], _phase_real);
tmp32f.val[0] = vsubq_f32(tmp_real.val[0], tmp_real.val[1]);
tmp32f.val[1] = vaddq_f32(tmp_imag.val[0], tmp_imag.val[1]);
tmp32_real.val[0] = vmulq_f32(tmp32f.val[0], _phase_real);
tmp32_real.val[1] = vmulq_f32(tmp32f.val[1], _phase_imag);
tmp32_imag.val[0] = vmulq_f32(tmp32f.val[0], _phase_imag);
tmp32_imag.val[1] = vmulq_f32(tmp32f.val[1], _phase_real);
tmp32f.val[0] = vsubq_f32(tmp32_real.val[0], tmp32_real.val[1]);
tmp32f.val[1] = vaddq_f32(tmp32_imag.val[0], tmp32_imag.val[1]);
/* downcast results to int32 */
/* in __aarch64__ we can do that with vcvtaq_s32_f32(ret1); vcvtaq_s32_f32(ret2); */
@ -506,32 +510,32 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_neon(lv_16sc_t*
tmp16.val[1] = vqmovn_s32(tmp32i.val[1]);
/* compute next four phases */
tmp_real.val[0] = vmulq_f32(_phase_real, _phase4_real);
tmp_real.val[1] = vmulq_f32(_phase_imag, _phase4_imag);
tmp_imag.val[0] = vmulq_f32(_phase_real, _phase4_imag);
tmp_imag.val[1] = vmulq_f32(_phase_imag, _phase4_real);
tmp32_real.val[0] = vmulq_f32(_phase_real, _phase4_real);
tmp32_real.val[1] = vmulq_f32(_phase_imag, _phase4_imag);
tmp32_imag.val[0] = vmulq_f32(_phase_real, _phase4_imag);
tmp32_imag.val[1] = vmulq_f32(_phase_imag, _phase4_real);
_phase_real = vsubq_f32(tmp_real.val[0], tmp_real.val[1]);
_phase_imag = vaddq_f32(tmp_imag.val[0], tmp_imag.val[1]);
_phase_real = vsubq_f32(tmp32_real.val[0], tmp32_real.val[1]);
_phase_imag = vaddq_f32(tmp32_imag.val[0], tmp32_imag.val[1]);
for (int n_vec = 0; n_vec < num_a_vectors; n_vec++)
{
a_val = vld2_s16((int16_t*)&(_in_a[n_vec][number*4])); //load (2 byte imag, 2 byte real) x 4 into 128 bits reg
__builtin_prefetch(&_in_a[n_vec][number*4] + 8);
// multiply the real*real and imag*imag to get real result
// a0r*b0r|a1r*b1r|a2r*b2r|a3r*b3r
tmp_real16.val[0] = vmul_s16(a_val.val[0], tmp16.val[0]);
b_val.val[0] = vmul_s16(a_val.val[0], tmp16.val[0]);
// a0i*b0i|a1i*b1i|a2i*b2i|a3i*b3i
tmp_real16.val[1] = vmul_s16(a_val.val[1], tmp16.val[1]);
b_val.val[1] = vmul_s16(a_val.val[1], tmp16.val[1]);
c_val.val[0] = vsub_s16(b_val.val[0], b_val.val[1]);
// Multiply cross terms to get the imaginary result
// a0r*b0i|a1r*b1i|a2r*b2i|a3r*b3i
tmp_imag16.val[0] = vmul_s16(a_val.val[0], tmp16.val[1]);
b_val.val[0] = vmul_s16(a_val.val[0], tmp16.val[1]);
// a0i*b0r|a1i*b1r|a2i*b2r|a3i*b3r
tmp_imag16.val[1] = vmul_s16(a_val.val[1], tmp16.val[0]);
c_val.val[0] = vsub_s16(tmp_real16.val[0], tmp_real16.val[1]);
c_val.val[1] = vadd_s16(tmp_imag16.val[0], tmp_imag16.val[1]);
b_val.val[1] = vmul_s16(a_val.val[1], tmp16.val[0]);
c_val.val[1] = vadd_s16(b_val.val[0], b_val.val[1]);
accumulator[n_vec].val[0] = vadd_s16(accumulator[n_vec].val[0], c_val.val[0]);
accumulator[n_vec].val[1] = vadd_s16(accumulator[n_vec].val[1], c_val.val[1]);
@ -558,13 +562,13 @@ static inline void volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn_neon(lv_16sc_t*
for (unsigned int n = neon_iters * 4; n < num_points; n++)
{
tmp16_ = *_in_common++;
tmp16_ = in_common[n];
tmp32_ = lv_cmake((float32_t)lv_creal(tmp16_), (float32_t)lv_cimag(tmp16_)) * (*phase);
tmp16_ = lv_cmake((int16_t)rintf(lv_creal(tmp32_)), (int16_t)rintf(lv_cimag(tmp32_)));
(*phase) *= phase_inc;
for (int n_vec = 0; n_vec < num_a_vectors; n_vec++)
{
tmp = tmp16_ * _in_a[n_vec][n];
tmp = tmp16_ * in_a[n_vec][n];
_out[n_vec] = lv_cmake(sat_adds16i(lv_creal(_out[n_vec]), lv_creal(tmp)), sat_adds16i(lv_cimag(_out[n_vec]), lv_cimag(tmp)));
}
}