/*  Copyright (C) 2003-2015 Paul Brossier <piem@aubio.org>   This file is part of aubio.   aubio is free software: you can redistribute it and/or modify  it under the terms of the GNU General Public License as published by  the Free Software Foundation, either version 3 of the License, or  (at your option) any later version.   aubio 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 General Public License for more details.   You should have received a copy of the GNU General Public License  along with aubio.  If not, see <http://www.gnu.org/licenses/>. */ #ifndef AUBIO_FVEC_H#define AUBIO_FVEC_H #ifdef __cplusplusextern "C" {#endif /** \file   Vector of real-valued data   This file specifies the ::fvec_t buffer type, which is used throughout aubio  to store vector of real-valued ::smpl_t.   \example test-fvec.c */ /** Buffer for real data   Vector of real-valued data   ::fvec_t is is the structure used to store vector of real-valued data, ::smpl_t .   \code   uint_t buffer_size = 1024;   // create a vector of 512 values  fvec_t * input = new_fvec (buffer_size);   // set some values of the vector  input->data[23] = 2.;  // ..   // compute the mean of the vector  mean = fvec_mean(a_vector);   // destroy the vector  del_fvec(a_vector);   \endcode   See `examples/` and `tests/src` directories for more examples.  */typedef struct {  uint_t length;  /**< length of buffer */  smpl_t *data;   /**< data vector of length ::fvec_t.length */} fvec_t; /** fvec_t buffer creation function   \param length the length of the buffer to create */fvec_t * new_fvec(uint_t length); /** fvec_t buffer deletion function   \param s buffer to delete as returned by new_fvec() */void del_fvec(fvec_t *s); /** read sample value in a buffer   \param s vector to read from  \param position sample position to read from */smpl_t fvec_get_sample(const fvec_t *s, uint_t position); /** write sample value in a buffer   \param s vector to write to  \param data value to write in s->data[position]  \param position sample position to write to */void  fvec_set_sample(fvec_t *s, smpl_t data, uint_t position); /** read data from a buffer   \param s vector to read from */smpl_t * fvec_get_data(const fvec_t *s); /** print out fvec data   \param s vector to print out */void fvec_print(const fvec_t *s); /** set all elements to a given value   \param s vector to modify  \param val value to set elements to */void fvec_set_all (fvec_t *s, smpl_t val); /** set all elements to zero   \param s vector to modify */void fvec_zeros(fvec_t *s); /** set all elements to ones   \param s vector to modify */void fvec_ones(fvec_t *s); /** revert order of vector elements   \param s vector to revert */void fvec_rev(fvec_t *s); /** apply weight to vector   If the weight vector is longer than s, only the first elements are used. If  the weight vector is shorter than s, the last elements of s are not weighted.   \param s vector to weight  \param weight weighting coefficients */void fvec_weight(fvec_t *s, const fvec_t *weight); /** make a copy of a vector   \param s source vector  \param t vector to copy to */void fvec_copy(const fvec_t *s, fvec_t *t); /** make a copy of a vector, applying weights to each element   \param in input vector  \param weight weights vector  \param out output vector */void fvec_weighted_copy(const fvec_t *in, const fvec_t *weight, fvec_t *out); #ifdef __cplusplus}#endif #endif /* AUBIO_FVEC_H */