/* * Copyright 2013-2019 Software Radio Systems Limited * * This file is part of srsLTE. * * srsLTE is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * srsLTE 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 Affero General Public License for more details. * * A copy of the GNU Affero General Public License can be found in * the LICENSE file in the top-level directory of this distribution * and at http://www.gnu.org/licenses/. * */ /****************************************************************************** * File: vector.h * * Description: Vector functions using SIMD instructions where possible. * * Reference: *****************************************************************************/ #ifndef SRSLTE_VECTOR_H #define SRSLTE_VECTOR_H #ifdef __cplusplus extern "C" { #endif #include "srslte/config.h" #include #include #include #define SRSLTE_MAX(a,b) ((a)>(b)?(a):(b)) #define SRSLTE_MIN(a,b) ((a)<(b)?(a):(b)) // Cumulative moving average #define SRSLTE_VEC_CMA(data, average, n) ((average) + ((data) - (average)) / ((n) + 1)) // Proportional moving average #define SRSLTE_VEC_PMA(average1, n1, average2, n2) (((average1) * (n1) + (average2) * (n2)) / ((n1) + (n2))) // Exponential moving average #define SRSLTE_VEC_EMA(data, average, alpha) ((alpha)*(data)+(1-alpha)*(average)) static inline float srslte_convert_amplitude_to_dB(float v) { return 20.0f * log10f(v); } static inline float srslte_convert_power_to_dB(float v) { return 10.0f * log10f(v); } static inline float srslte_convert_power_to_dBm(float v) { return srslte_convert_power_to_dB(v) + 30.0f; } static inline float srslte_convert_dB_to_amplitude(float v) { return powf(10.0f, v / 20.0f); } static inline float srslte_convert_dB_to_power(float v) { return powf(10.0f, v / 10.0f); } /*logical operations */ SRSLTE_API void srslte_vec_xor_bbb(int8_t *x,int8_t *y,int8_t *z, const uint32_t len); /** Return the sum of all the elements */ SRSLTE_API float srslte_vec_acc_ff(const float *x, const uint32_t len); SRSLTE_API cf_t srslte_vec_acc_cc(const cf_t *x, const uint32_t len); SRSLTE_API void *srslte_vec_malloc(uint32_t size); SRSLTE_API void *srslte_vec_realloc(void *ptr, uint32_t old_size, uint32_t new_size); /* print vectors */ SRSLTE_API void srslte_vec_fprint_c(FILE *stream, cf_t *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_f(FILE *stream, float *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_b(FILE *stream, uint8_t *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_bs(FILE *stream, int8_t *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_byte(FILE *stream, uint8_t *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_i(FILE *stream, int *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_s(FILE *stream, short *x, const uint32_t len); SRSLTE_API void srslte_vec_fprint_hex(FILE *stream, uint8_t *x, const uint32_t len); SRSLTE_API void srslte_vec_sprint_hex(char *str, const uint32_t max_str_len, uint8_t *x, const uint32_t len); /* Saves/loads a vector to a file */ SRSLTE_API void srslte_vec_save_file(char *filename, const void *buffer, const uint32_t len); SRSLTE_API void srslte_vec_load_file(char *filename, void *buffer, const uint32_t len); /* sum two vectors */ SRSLTE_API void srslte_vec_sum_fff(const float *x, const float *y, float *z, const uint32_t len); SRSLTE_API void srslte_vec_sum_ccc(const cf_t *x, const cf_t *y, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_sum_sss(const int16_t *x, const int16_t *y, int16_t *z, const uint32_t len); /* substract two vectors z=x-y */ SRSLTE_API void srslte_vec_sub_fff(const float *x, const float *y, float *z, const uint32_t len); SRSLTE_API void srslte_vec_sub_ccc(const cf_t *x, const cf_t *y, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_sub_sss(const int16_t *x, const int16_t *y, int16_t *z, const uint32_t len); SRSLTE_API void srslte_vec_sub_bbb(const int8_t *x, const int8_t *y, int8_t *z, const uint32_t len); /* scalar product */ SRSLTE_API void srslte_vec_sc_prod_cfc(const cf_t *x, const float h, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_sc_prod_ccc(const cf_t *x, const cf_t h, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_sc_prod_fff(const float *x, const float h, float *z, const uint32_t len); SRSLTE_API void srslte_vec_convert_fi(const float *x, const float scale, int16_t *z, const uint32_t len); SRSLTE_API void srslte_vec_convert_if(const int16_t *x, const float scale, float *z, const uint32_t len); SRSLTE_API void srslte_vec_convert_fb(const float *x, const float scale, int8_t *z, const uint32_t len); SRSLTE_API void srslte_vec_lut_sss(const short *x, const unsigned short *lut, short *y, const uint32_t len); SRSLTE_API void srslte_vec_lut_bbb(const int8_t *x, const unsigned short *lut, int8_t *y, const uint32_t len); SRSLTE_API void srslte_vec_lut_sis(const short *x, const unsigned int *lut, short *y, const uint32_t len); /* vector product (element-wise) */ SRSLTE_API void srslte_vec_prod_ccc(const cf_t *x, const cf_t *y, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_prod_ccc_split(const float *x_re, const float *x_im, const float *y_re, const float *y_im, float *z_re, float *z_im, const uint32_t len); /* vector product (element-wise) */ SRSLTE_API void srslte_vec_prod_cfc(const cf_t *x, const float *y, cf_t *z, const uint32_t len); /* conjugate vector product (element-wise) */ SRSLTE_API void srslte_vec_prod_conj_ccc(const cf_t *x, const cf_t *y, cf_t *z, const uint32_t len); /* real vector product (element-wise) */ SRSLTE_API void srslte_vec_prod_fff(const float *x, const float *y, float *z, const uint32_t len); SRSLTE_API void srslte_vec_prod_sss(const int16_t *x, const int16_t *y, int16_t *z, const uint32_t len); // Negate sign (scrambling) SRSLTE_API void srslte_vec_neg_sss(const int16_t *x, const int16_t *y, int16_t *z, const uint32_t len); SRSLTE_API void srslte_vec_neg_bbb(const int8_t *x, const int8_t *y, int8_t *z, const uint32_t len); /* Dot-product */ SRSLTE_API cf_t srslte_vec_dot_prod_cfc(const cf_t *x, const float *y, const uint32_t len); SRSLTE_API cf_t srslte_vec_dot_prod_ccc(const cf_t *x, const cf_t *y, const uint32_t len); SRSLTE_API cf_t srslte_vec_dot_prod_conj_ccc(const cf_t *x, const cf_t *y, const uint32_t len); SRSLTE_API float srslte_vec_dot_prod_fff(const float *x, const float *y, const uint32_t len); SRSLTE_API int32_t srslte_vec_dot_prod_sss(const int16_t *x, const int16_t *y, const uint32_t len); /* z=x/y vector division (element-wise) */ SRSLTE_API void srslte_vec_div_ccc(const cf_t *x, const cf_t *y, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_div_cfc(const cf_t *x, const float *y, cf_t *z, const uint32_t len); SRSLTE_API void srslte_vec_div_fff(const float *x, const float *y, float *z, const uint32_t len); /* conjugate */ SRSLTE_API void srslte_vec_conj_cc(const cf_t *x, cf_t *y, const uint32_t len); /* average vector power */ SRSLTE_API float srslte_vec_avg_power_cf(const cf_t *x, const uint32_t len); /* Correlation between complex vectors x and y */ SRSLTE_API float srslte_vec_corr_ccc(const cf_t *x, cf_t *y, const uint32_t len); /* return the index of the maximum value in the vector */ SRSLTE_API uint32_t srslte_vec_max_fi(const float *x, const uint32_t len); SRSLTE_API uint32_t srslte_vec_max_abs_fi(const float *x, const uint32_t len); SRSLTE_API uint32_t srslte_vec_max_abs_ci(const cf_t *x, const uint32_t len); /* quantify vector of floats or int16 and convert to uint8_t */ SRSLTE_API void srslte_vec_quant_fuc(const float *in, uint8_t *out, const float gain, const float offset, const float clip, const uint32_t len); SRSLTE_API void srslte_vec_quant_fus(float *in, uint16_t *out, float gain, float offset, float clip, uint32_t len); SRSLTE_API void srslte_vec_quant_suc(const int16_t *in, uint8_t *out, const float gain, const int16_t offset, const int16_t clip, const uint32_t len); SRSLTE_API void srslte_vec_quant_sus(const int16_t *in, uint16_t *out, const float gain, const int16_t offset, const uint32_t len); /* magnitude of each vector element */ SRSLTE_API void srslte_vec_abs_cf(const cf_t *x, float *abs, const uint32_t len); SRSLTE_API void srslte_vec_abs_square_cf(const cf_t *x, float *abs_square, const uint32_t len); /** * @brief Extracts module in decibels of a complex vector * * This function extracts the module in decibels of a complex array input. Abnormal absolute value inputs (zero, * infinity and not-a-number) are set to default_value outputs. * * Equivalent code: * for (int i = 0; i < len; i++) { * float mag = x[i]; * * // Check boundaries * if (isnormal(mag)) { * // Avoid infinites and zeros * abs[i] = 20.0f * log10f(mag); * } else { * // Set to default value instead * abs[i] = default_value; * } * } * * @param x is the input complex vector * @param default_value is the value to use in case of having an abnormal absolute value. * @param abs is the destination vector * @param len is the input and output number of samples * */ SRSLTE_API void srslte_vec_abs_dB_cf(const cf_t* x, float default_value, float* abs, const uint32_t len); /** * @brief Extracts argument in degrees from a complex vector * * This function extracts the argument from a complex vector. Infinity and not-a-number results are set to * default_value. * * Equivalent code: * for(int i = 0; i < len; i++) { * arg[i] = cargf(x[i]) * (180.0f / M_PI); * * if (arg[i]!=0.0f && !isnormal(arg[i])) { * arg[i] = default_value; * } * } * * @param x is the input complex vector * @param default_value is the value to use in case of having an abnormal result. * @param arg is the destination vector * @param len is the input and output number of samples * */ SRSLTE_API void srslte_vec_arg_deg_cf(const cf_t* x, float default_value, float* arg, const uint32_t len); /* Copy 256 bit aligned vector */ SRSLTE_API void srs_vec_cf_cpy(const cf_t *src, cf_t *dst, const int len); SRSLTE_API void srslte_vec_interleave(const cf_t *x, const cf_t *y, cf_t *z, const int len); SRSLTE_API void srslte_vec_interleave_add(const cf_t *x, const cf_t *y, cf_t *z, const int len); SRSLTE_API void srslte_vec_gen_sine(cf_t amplitude, float freq, cf_t* z, int len); SRSLTE_API void srslte_vec_apply_cfo(const cf_t *x, float cfo, cf_t *z, int len); SRSLTE_API float srslte_vec_estimate_frequency(const cf_t* x, int len); #ifdef __cplusplus } #endif #endif // SRSLTE_VECTOR_H