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154 lines
6.2 KiB
C
154 lines
6.2 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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/******************************************************************************
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* File: vector.h
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*
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* Description: Vector functions using SIMD instructions where possible.
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*
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* Reference:
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*****************************************************************************/
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#ifndef VECTOR_
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#define VECTOR_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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#include <stdint.h>
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#include "srslte/config.h"
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#define SRSLTE_MAX(a,b) ((a)>(b)?(a):(b))
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#define SRSLTE_MIN(a,b) ((a)<(b)?(a):(b))
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// Cumulative moving average
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#define SRSLTE_VEC_CMA(data, average, n) ((average) + ((data) - (average)) / ((n)+1))
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// Exponential moving average
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#define SRSLTE_VEC_EMA(data, average, alpha) ((alpha)*(data)+(1-alpha)*(average))
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/** Return the sum of all the elements */
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SRSLTE_API float srslte_vec_acc_ff(float *x, uint32_t len);
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SRSLTE_API cf_t srslte_vec_acc_cc(cf_t *x, uint32_t len);
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SRSLTE_API void *srslte_vec_malloc(uint32_t size);
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SRSLTE_API void *srslte_vec_realloc(void *ptr, uint32_t old_size, uint32_t new_size);
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/* print vectors */
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SRSLTE_API void srslte_vec_fprint_c(FILE *stream, cf_t *x, uint32_t len);
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SRSLTE_API void srslte_vec_fprint_f(FILE *stream, float *x, uint32_t len);
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SRSLTE_API void srslte_vec_fprint_b(FILE *stream, uint8_t *x, uint32_t len);
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SRSLTE_API void srslte_vec_fprint_byte(FILE *stream, uint8_t *x, uint32_t len);
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SRSLTE_API void srslte_vec_fprint_i(FILE *stream, int *x, uint32_t len);
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SRSLTE_API void srslte_vec_fprint_s(FILE *stream, short *x, uint32_t len);
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SRSLTE_API void srslte_vec_fprint_hex(FILE *stream, uint8_t *x, uint32_t len);
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SRSLTE_API void srslte_vec_sprint_hex(char *str, uint8_t *x, uint32_t len);
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/* Saves/loads a vector to a file */
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SRSLTE_API void srslte_vec_save_file(char *filename, void *buffer, uint32_t len);
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SRSLTE_API void srslte_vec_load_file(char *filename, void *buffer, uint32_t len);
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/* sum two vectors */
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SRSLTE_API void srslte_vec_sum_fff(float *x, float *y, float *z, uint32_t len);
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SRSLTE_API void srslte_vec_sum_ccc(cf_t *x, cf_t *y, cf_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_sub_sss(int16_t *x, int16_t *y, int16_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_sum_sss(int16_t *x, int16_t *y, int16_t *z, uint32_t len);
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/* substract two vectors z=x-y */
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SRSLTE_API void srslte_vec_sub_fff(float *x, float *y, float *z, uint32_t len);
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SRSLTE_API void srslte_vec_sub_ccc(cf_t *x, cf_t *y, cf_t *z, uint32_t len);
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/* scalar product */
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SRSLTE_API void srslte_vec_sc_prod_cfc(cf_t *x, float h, cf_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_sc_prod_ccc(cf_t *x, cf_t h, cf_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_sc_prod_fff(float *x, float h, float *z, uint32_t len);
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SRSLTE_API void srslte_vec_convert_fi(float *x, int16_t *z, float scale, uint32_t len);
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SRSLTE_API void srslte_vec_convert_if(int16_t *x, float *z, float scale, uint32_t len);
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SRSLTE_API void srslte_vec_lut_sss(short *x, unsigned short *lut, short *y, uint32_t len);
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/* vector product (element-wise) */
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SRSLTE_API void srslte_vec_prod_ccc(cf_t *x, cf_t *y, cf_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_prod_ccc_split(float *x_re, float *x_im, float *y_re, float *y_im, float *z_re, float *z_im, uint32_t len);
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/* vector product (element-wise) */
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SRSLTE_API void srslte_vec_prod_cfc(cf_t *x, float *y, cf_t *z, uint32_t len);
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/* conjugate vector product (element-wise) */
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SRSLTE_API void srslte_vec_prod_conj_ccc(cf_t *x, cf_t *y, cf_t *z, uint32_t len);
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/* real vector product (element-wise) */
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SRSLTE_API void srslte_vec_prod_fff(float *x, float *y, float *z, uint32_t len);
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SRSLTE_API void srslte_vec_prod_sss(int16_t *x, int16_t *y, int16_t *z, uint32_t len);
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/* Dot-product */
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SRSLTE_API cf_t srslte_vec_dot_prod_cfc(cf_t *x, float *y, uint32_t len);
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SRSLTE_API cf_t srslte_vec_dot_prod_ccc(cf_t *x, cf_t *y, uint32_t len);
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SRSLTE_API cf_t srslte_vec_dot_prod_conj_ccc(cf_t *x, cf_t *y, uint32_t len);
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SRSLTE_API float srslte_vec_dot_prod_fff(float *x, float *y, uint32_t len);
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SRSLTE_API int32_t srslte_vec_dot_prod_sss(int16_t *x, int16_t *y, uint32_t len);
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/* z=x/y vector division (element-wise) */
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SRSLTE_API void srslte_vec_div_ccc(cf_t *x, cf_t *y, cf_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_div_cfc(cf_t *x, float *y, cf_t *z, uint32_t len);
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SRSLTE_API void srslte_vec_div_fff(float *x, float *y, float *z, uint32_t len);
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/* conjugate */
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SRSLTE_API void srslte_vec_conj_cc(cf_t *x, cf_t *y, uint32_t len);
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/* average vector power */
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SRSLTE_API float srslte_vec_avg_power_cf(cf_t *x, uint32_t len);
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/* Correlation between complex vectors x and y */
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SRSLTE_API float srslte_vec_corr_ccc(cf_t *x, cf_t *y, uint32_t len);
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/* return the index of the maximum value in the vector */
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SRSLTE_API uint32_t srslte_vec_max_fi(float *x, uint32_t len);
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SRSLTE_API uint32_t srslte_vec_max_abs_ci(cf_t *x, uint32_t len);
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/* quantify vector of floats or int16 and convert to uint8_t */
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SRSLTE_API void srslte_vec_quant_fuc(float *in, uint8_t *out, float gain, float offset, float clip, uint32_t len);
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SRSLTE_API void srslte_vec_quant_suc(int16_t *in, uint8_t *out, float gain, int16_t offset, int16_t clip, uint32_t len);
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/* magnitude of each vector element */
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SRSLTE_API void srslte_vec_abs_cf(cf_t *x, float *abs, uint32_t len);
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SRSLTE_API void srslte_vec_abs_square_cf(cf_t *x, float *abs_square, uint32_t len);
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/* Copy 256 bit aligned vector */
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SRSLTE_API void srs_vec_cf_cpy(cf_t *src, cf_t *dst, int len);
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#ifdef __cplusplus
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}
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#endif
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#endif // VECTOR_
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