| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* -*- c++ -*- */ | ||
| 2 | /* | ||
| 3 | * Copyright 2012, 2014 Free Software Foundation, Inc. | ||
| 4 | * | ||
| 5 | * This file is part of VOLK | ||
| 6 | * | ||
| 7 | * SPDX-License-Identifier: LGPL-3.0-or-later | ||
| 8 | */ | ||
| 9 | |||
| 10 | /*! | ||
| 11 | * \page volk_32fc_deinterleave_real_64f | ||
| 12 | * | ||
| 13 | * \b Overview | ||
| 14 | * | ||
| 15 | * Deinterleaves the complex floating point vector and return the real | ||
| 16 | * part (inphase) of the samples that have been converted to doubles. | ||
| 17 | * | ||
| 18 | * <b>Dispatcher Prototype</b> | ||
| 19 | * \code | ||
| 20 | * void volk_32fc_deinterleave_real_64f(double* iBuffer, const lv_32fc_t* | ||
| 21 | * complexVector, unsigned int num_points) \endcode | ||
| 22 | * | ||
| 23 | * \b Inputs | ||
| 24 | * \li complexVector: The complex input vector. | ||
| 25 | * \li num_points: The number of complex data values to be deinterleaved. | ||
| 26 | * | ||
| 27 | * \b Outputs | ||
| 28 | * \li iBuffer: The I buffer output data. | ||
| 29 | * | ||
| 30 | * \b Example | ||
| 31 | * \code | ||
| 32 | * Generate complex numbers around the top half of the unit circle and | ||
| 33 | * extract all of the real parts to a double buffer. | ||
| 34 | * \code | ||
| 35 | * int N = 10; | ||
| 36 | * unsigned int alignment = volk_get_alignment(); | ||
| 37 | * lv_32fc_t* in = (lv_32fc_t*)volk_malloc(sizeof(lv_32fc_t)*N, alignment); | ||
| 38 | * double* re = (double*)volk_malloc(sizeof(double)*N, alignment); | ||
| 39 | * | ||
| 40 | * for(unsigned int ii = 0; ii < N; ++ii){ | ||
| 41 | * float real = 2.f * ((float)ii / (float)N) - 1.f; | ||
| 42 | * float imag = std::sqrt(1.f - real * real); | ||
| 43 | * in[ii] = lv_cmake(real, imag); | ||
| 44 | * } | ||
| 45 | * | ||
| 46 | * volk_32fc_deinterleave_real_64f(re, in, N); | ||
| 47 | * | ||
| 48 | * printf(" real part\n"); | ||
| 49 | * for(unsigned int ii = 0; ii < N; ++ii){ | ||
| 50 | * printf("out(%i) = %+.1g\n", ii, re[ii]); | ||
| 51 | * } | ||
| 52 | * | ||
| 53 | * volk_free(in); | ||
| 54 | * volk_free(re); | ||
| 55 | * \endcode | ||
| 56 | */ | ||
| 57 | |||
| 58 | #ifndef INCLUDED_volk_32fc_deinterleave_real_64f_a_H | ||
| 59 | #define INCLUDED_volk_32fc_deinterleave_real_64f_a_H | ||
| 60 | |||
| 61 | #include <inttypes.h> | ||
| 62 | #include <stdio.h> | ||
| 63 | |||
| 64 | #ifdef LV_HAVE_AVX2 | ||
| 65 | #include <immintrin.h> | ||
| 66 | |||
| 67 | 2 | static inline void volk_32fc_deinterleave_real_64f_a_avx2(double* iBuffer, | |
| 68 | const lv_32fc_t* complexVector, | ||
| 69 | unsigned int num_points) | ||
| 70 | { | ||
| 71 | 2 | unsigned int number = 0; | |
| 72 | |||
| 73 | 2 | const float* complexVectorPtr = (float*)complexVector; | |
| 74 | 2 | double* iBufferPtr = iBuffer; | |
| 75 | |||
| 76 | 2 | const unsigned int quarterPoints = num_points / 4; | |
| 77 | __m256 cplxValue; | ||
| 78 | __m128 fVal; | ||
| 79 | __m256d dVal; | ||
| 80 | 2 | __m256i idx = _mm256_set_epi32(0, 0, 0, 0, 6, 4, 2, 0); | |
| 81 |
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65536 | for (; number < quarterPoints; number++) { |
| 82 | |||
| 83 | 65534 | cplxValue = _mm256_load_ps(complexVectorPtr); | |
| 84 | 65534 | complexVectorPtr += 8; | |
| 85 | |||
| 86 | // Arrange in i1i2i1i2 format | ||
| 87 | 65534 | cplxValue = _mm256_permutevar8x32_ps(cplxValue, idx); | |
| 88 | 65534 | fVal = _mm256_extractf128_ps(cplxValue, 0); | |
| 89 | 65534 | dVal = _mm256_cvtps_pd(fVal); | |
| 90 | _mm256_store_pd(iBufferPtr, dVal); | ||
| 91 | |||
| 92 | 65534 | iBufferPtr += 4; | |
| 93 | } | ||
| 94 | |||
| 95 | 2 | number = quarterPoints * 4; | |
| 96 |
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8 | for (; number < num_points; number++) { |
| 97 | 6 | *iBufferPtr++ = (double)*complexVectorPtr++; | |
| 98 | 6 | complexVectorPtr++; | |
| 99 | } | ||
| 100 | 2 | } | |
| 101 | #endif /* LV_HAVE_AVX2 */ | ||
| 102 | |||
| 103 | #ifdef LV_HAVE_SSE2 | ||
| 104 | #include <emmintrin.h> | ||
| 105 | |||
| 106 | 2 | static inline void volk_32fc_deinterleave_real_64f_a_sse2(double* iBuffer, | |
| 107 | const lv_32fc_t* complexVector, | ||
| 108 | unsigned int num_points) | ||
| 109 | { | ||
| 110 | 2 | unsigned int number = 0; | |
| 111 | |||
| 112 | 2 | const float* complexVectorPtr = (float*)complexVector; | |
| 113 | 2 | double* iBufferPtr = iBuffer; | |
| 114 | |||
| 115 | 2 | const unsigned int halfPoints = num_points / 2; | |
| 116 | __m128 cplxValue, fVal; | ||
| 117 | __m128d dVal; | ||
| 118 |
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131072 | for (; number < halfPoints; number++) { |
| 119 | |||
| 120 | 131070 | cplxValue = _mm_load_ps(complexVectorPtr); | |
| 121 | 131070 | complexVectorPtr += 4; | |
| 122 | |||
| 123 | // Arrange in i1i2i1i2 format | ||
| 124 | 131070 | fVal = _mm_shuffle_ps(cplxValue, cplxValue, _MM_SHUFFLE(2, 0, 2, 0)); | |
| 125 | 131070 | dVal = _mm_cvtps_pd(fVal); | |
| 126 | _mm_store_pd(iBufferPtr, dVal); | ||
| 127 | |||
| 128 | 131070 | iBufferPtr += 2; | |
| 129 | } | ||
| 130 | |||
| 131 | 2 | number = halfPoints * 2; | |
| 132 |
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4 | for (; number < num_points; number++) { |
| 133 | 2 | *iBufferPtr++ = (double)*complexVectorPtr++; | |
| 134 | 2 | complexVectorPtr++; | |
| 135 | } | ||
| 136 | 2 | } | |
| 137 | #endif /* LV_HAVE_SSE */ | ||
| 138 | |||
| 139 | #ifdef LV_HAVE_GENERIC | ||
| 140 | |||
| 141 | 2 | static inline void volk_32fc_deinterleave_real_64f_generic(double* iBuffer, | |
| 142 | const lv_32fc_t* complexVector, | ||
| 143 | unsigned int num_points) | ||
| 144 | { | ||
| 145 | 2 | unsigned int number = 0; | |
| 146 | 2 | const float* complexVectorPtr = (float*)complexVector; | |
| 147 | 2 | double* iBufferPtr = iBuffer; | |
| 148 |
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262144 | for (number = 0; number < num_points; number++) { |
| 149 | 262142 | *iBufferPtr++ = (double)*complexVectorPtr++; | |
| 150 | 262142 | complexVectorPtr++; | |
| 151 | } | ||
| 152 | 2 | } | |
| 153 | #endif /* LV_HAVE_GENERIC */ | ||
| 154 | |||
| 155 | #ifdef LV_HAVE_NEONV8 | ||
| 156 | #include <arm_neon.h> | ||
| 157 | |||
| 158 | static inline void volk_32fc_deinterleave_real_64f_neon(double* iBuffer, | ||
| 159 | const lv_32fc_t* complexVector, | ||
| 160 | unsigned int num_points) | ||
| 161 | { | ||
| 162 | unsigned int number = 0; | ||
| 163 | unsigned int quarter_points = num_points / 4; | ||
| 164 | const float* complexVectorPtr = (float*)complexVector; | ||
| 165 | double* iBufferPtr = iBuffer; | ||
| 166 | float32x2x4_t complexInput; | ||
| 167 | float64x2_t iVal1; | ||
| 168 | float64x2_t iVal2; | ||
| 169 | float64x2x2_t iVal; | ||
| 170 | |||
| 171 | for (number = 0; number < quarter_points; number++) { | ||
| 172 | // Load data into register | ||
| 173 | complexInput = vld4_f32(complexVectorPtr); | ||
| 174 | |||
| 175 | // Perform single to double precision conversion | ||
| 176 | iVal1 = vcvt_f64_f32(complexInput.val[0]); | ||
| 177 | iVal2 = vcvt_f64_f32(complexInput.val[2]); | ||
| 178 | iVal.val[0] = iVal1; | ||
| 179 | iVal.val[1] = iVal2; | ||
| 180 | |||
| 181 | // Store results into memory buffer | ||
| 182 | vst2q_f64(iBufferPtr, iVal); | ||
| 183 | |||
| 184 | // Update pointers | ||
| 185 | iBufferPtr += 4; | ||
| 186 | complexVectorPtr += 8; | ||
| 187 | } | ||
| 188 | |||
| 189 | for (number = quarter_points * 4; number < num_points; number++) { | ||
| 190 | *iBufferPtr++ = (double)*complexVectorPtr++; | ||
| 191 | complexVectorPtr++; | ||
| 192 | } | ||
| 193 | } | ||
| 194 | #endif /* LV_HAVE_NEON */ | ||
| 195 | |||
| 196 | #endif /* INCLUDED_volk_32fc_deinterleave_real_64f_a_H */ | ||
| 197 | |||
| 198 | #ifndef INCLUDED_volk_32fc_deinterleave_real_64f_u_H | ||
| 199 | #define INCLUDED_volk_32fc_deinterleave_real_64f_u_H | ||
| 200 | |||
| 201 | #include <inttypes.h> | ||
| 202 | #include <stdio.h> | ||
| 203 | |||
| 204 | #ifdef LV_HAVE_AVX2 | ||
| 205 | #include <immintrin.h> | ||
| 206 | |||
| 207 | 2 | static inline void volk_32fc_deinterleave_real_64f_u_avx2(double* iBuffer, | |
| 208 | const lv_32fc_t* complexVector, | ||
| 209 | unsigned int num_points) | ||
| 210 | { | ||
| 211 | 2 | unsigned int number = 0; | |
| 212 | |||
| 213 | 2 | const float* complexVectorPtr = (float*)complexVector; | |
| 214 | 2 | double* iBufferPtr = iBuffer; | |
| 215 | |||
| 216 | 2 | const unsigned int quarterPoints = num_points / 4; | |
| 217 | __m256 cplxValue; | ||
| 218 | __m128 fVal; | ||
| 219 | __m256d dVal; | ||
| 220 | 2 | __m256i idx = _mm256_set_epi32(0, 0, 0, 0, 6, 4, 2, 0); | |
| 221 |
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65536 | for (; number < quarterPoints; number++) { |
| 222 | |||
| 223 | 65534 | cplxValue = _mm256_loadu_ps(complexVectorPtr); | |
| 224 | 65534 | complexVectorPtr += 8; | |
| 225 | |||
| 226 | // Arrange in i1i2i1i2 format | ||
| 227 | 65534 | cplxValue = _mm256_permutevar8x32_ps(cplxValue, idx); | |
| 228 | 65534 | fVal = _mm256_extractf128_ps(cplxValue, 0); | |
| 229 | 65534 | dVal = _mm256_cvtps_pd(fVal); | |
| 230 | _mm256_storeu_pd(iBufferPtr, dVal); | ||
| 231 | |||
| 232 | 65534 | iBufferPtr += 4; | |
| 233 | } | ||
| 234 | |||
| 235 | 2 | number = quarterPoints * 4; | |
| 236 |
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8 | for (; number < num_points; number++) { |
| 237 | 6 | *iBufferPtr++ = (double)*complexVectorPtr++; | |
| 238 | 6 | complexVectorPtr++; | |
| 239 | } | ||
| 240 | 2 | } | |
| 241 | #endif /* LV_HAVE_AVX2 */ | ||
| 242 | |||
| 243 | #endif /* INCLUDED_volk_32fc_deinterleave_real_64f_u_H */ | ||
| 244 |