[hamradio-commits] [gnss-sdr] 35/80: Documenting kernels constraint

[Carles Fernandez]

This is an automated email from the git hooks/post-receive script.

carles_fernandez-guest pushed a commit to branch upstream
in repository gnss-sdr.

commit 84911043b43d078cf12ee4d01213e12c7f57a10f
Author: Carles Fernandez <carles.fernandez at gmail.com>
Date:   Fri May 6 08:25:04 2016 +0200

    Documenting kernels constraint
---
 .../volk_gnsssdr/volk_gnsssdr_16ic_resampler_fast_16ic.h      | 11 +----------
 .../volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn.h             |  6 +-----
 2 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_resampler_fast_16ic.h b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_resampler_fast_16ic.h
index 0fe970b..51a9cf9 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_resampler_fast_16ic.h
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_resampler_fast_16ic.h
@@ -39,6 +39,7 @@
  * \b Overview
  *
  * Resamples a complex vector (16-bit integer each component).
+ * WARNING: \p phase cannot reach more that twice the length of \p local_code, either positive or negative.
  *
  * <b>Dispatcher Prototype</b>
  * \code
@@ -64,14 +65,9 @@
 #include <volk_gnsssdr/volk_gnsssdr_common.h>
 #include <volk_gnsssdr/volk_gnsssdr_complex.h>
 
-//#pragma STDC FENV_ACCESS ON
 
 #ifdef LV_HAVE_GENERIC
 
-//int round_int( float r ) {
-//    return (r > 0.0) ? (r + 0.5) : (r - 0.5);
-//}
-
 static inline void volk_gnsssdr_16ic_resampler_fast_16ic_generic(lv_16sc_t* result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, int code_length_chips, unsigned int num_output_samples)
 {
     int local_code_chip_index;
@@ -132,7 +128,6 @@ static inline void volk_gnsssdr_16ic_resampler_fast_16ic_a_sse2(lv_16sc_t* resul
     __VOLK_ATTR_ALIGNED(16) float init_4constant_float[4] = { 4.0f, 4.0f, 4.0f, 4.0f };
     __m128 _4constant_float = _mm_load_ps(init_4constant_float);
 
-
     for(number = 0; number < quarterPoints; number++)
         {
             _code_phase_out = _mm_mul_ps(_code_phase_step_chips, _4output_index); //compute the code phase point with the phase step
@@ -156,7 +151,6 @@ static inline void volk_gnsssdr_16ic_resampler_fast_16ic_a_sse2(lv_16sc_t* resul
             *_result++ = local_code[local_code_chip_index[3]];
 
             _4output_index = _mm_add_ps(_4output_index, _4constant_float);
-
         }
 
     for(number = quarterPoints * 4; number < num_output_samples; number++)
@@ -166,7 +160,6 @@ static inline void volk_gnsssdr_16ic_resampler_fast_16ic_a_sse2(lv_16sc_t* resul
             if (local_code_chip_index[0] > (code_length_chips - 1)) local_code_chip_index[0] -= code_length_chips;
             *_result++ = local_code[local_code_chip_index[0]];
         }
-
 }
 
 #endif /* LV_HAVE_SSE2 */
@@ -238,7 +231,6 @@ static inline void volk_gnsssdr_16ic_resampler_fast_16ic_u_sse2(lv_16sc_t* resul
             *_result++ = local_code[local_code_chip_index[3]];
 
             _4output_index = _mm_add_ps(_4output_index, _4constant_float);
-
         }
 
     for(number = quarterPoints * 4; number < num_output_samples; number++)
@@ -248,7 +240,6 @@ static inline void volk_gnsssdr_16ic_resampler_fast_16ic_u_sse2(lv_16sc_t* resul
             if (local_code_chip_index[0] > (code_length_chips - 1)) local_code_chip_index[0] -= code_length_chips;
             *_result++ = local_code[local_code_chip_index[0]];
         }
-
 }
 
 #endif /* LV_HAVE_SSE2 */
diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn.h b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn.h
index 1a13675..5771bbc 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn.h
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn.h
@@ -40,6 +40,7 @@
  * \b Overview
  *
  * Resamples a complex vector (16-bit integer each component), providing \p num_out_vectors outputs.
+ * WARNING: \p phase cannot reach more that twice the length of \p local_code, either positive or negative.
  *
  * <b>Dispatcher Prototype</b>
  * \code
@@ -81,7 +82,6 @@ static inline void volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn_generic(lv_16sc_t
                     local_code_chip_index = round(code_phase_step_chips * (float)(n) + rem_code_phase_chips[current_vector] - 0.5f);
                     if (local_code_chip_index < 0.0) local_code_chip_index += code_length_chips;
                     if (local_code_chip_index > (code_length_chips - 1)) local_code_chip_index -= code_length_chips;
-                    //std::cout<<"g["<<n<<"]="<<code_phase_step_chips*static_cast<float>(n) + rem_code_phase_chips-0.5f<<","<<local_code_chip_index<<" ";
                     result[current_vector][n] = local_code[local_code_chip_index];
                 }
         }
@@ -176,9 +176,7 @@ static inline void volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn_a_sse2(lv_16sc_t*
                     if (local_code_chip_index[0] > (code_length_chips - 1)) local_code_chip_index[0] -= code_length_chips;
                     _result[current_vector][number] = local_code[local_code_chip_index[0]];
                 }
-
         }
-
 }
 #endif /* LV_HAVE_SSE2 */
 
@@ -269,9 +267,7 @@ static inline void volk_gnsssdr_16ic_xn_resampler_fast_16ic_xn_u_sse2(lv_16sc_t*
                     if (local_code_chip_index[0] > (code_length_chips - 1)) local_code_chip_index[0] -= code_length_chips;
                     _result[current_vector][number] = local_code[local_code_chip_index[0]];
                 }
-
         }
-
 }
 
 #endif /* LV_HAVE_SSE2 */

-- 
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-hamradio/gnss-sdr.git