kopia lustrzana https://github.com/Dsplib/libdspl-2.0
151 wiersze
4.6 KiB
C
151 wiersze
4.6 KiB
C
/*
|
||
* Copyright (c) 2015-2020 Sergey Bakhurin
|
||
* Digital Signal Processing Library [http://dsplib.org]
|
||
*
|
||
* This file is part of DSPL.
|
||
*
|
||
* 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.
|
||
*
|
||
* DSPL 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include "dspl.h"
|
||
|
||
|
||
#ifdef DOXYGEN_ENGLISH
|
||
/*! ****************************************************************************
|
||
\ingroup TYPES_GROUP
|
||
\fn int cmplx2re(complex_t* x, int n, double* re, double* im)
|
||
\brief Separate complex vector to the real and image vectors
|
||
|
||
Function fills `re` and `im` vectors corresponds to real and image
|
||
parts of the input complex array `x`. \n
|
||
|
||
|
||
\param[in] x
|
||
Pointer to the real complex vector. \n
|
||
Vector size is `[n x 1]`. \n \n
|
||
|
||
\param[in] n
|
||
Size of the input complex vector `x` and real and image
|
||
vectors `re` and `im`. \n \n
|
||
|
||
\param[out] re
|
||
Pointer to the real part vector. \n
|
||
Vector size is `[n x 1]`. \n
|
||
Memory must be allocated. \n \n
|
||
|
||
\param[out] im
|
||
Pointer to the image part vector. \n
|
||
Vector size is `[n x 1]`. \n
|
||
Memory must be allocated. \n \n
|
||
|
||
\return
|
||
`RES_OK` if function converts complex vector successfully. \n
|
||
Else \ref ERROR_CODE_GROUP "code error". \n
|
||
|
||
Example: \n
|
||
\code{.cpp}
|
||
complex_t x[3] = {{1.0, 2.0}, {3.0, 4.0}, {5.0, 6.0}};
|
||
double re[3], im[3];
|
||
|
||
cmplx2re(x, 3, re, im);
|
||
\endcode
|
||
|
||
Vectors `re` and `im` will contains:
|
||
|
||
\verbatim
|
||
re[0] = 1.0; im[0] = 2.0;
|
||
re[1] = 3.0; im[1] = 4.0;
|
||
re[2] = 5.0; im[2] = 6.0;
|
||
\endverbatim
|
||
|
||
\author Sergey Bakhurin. www.dsplib.org
|
||
***************************************************************************** */
|
||
#endif
|
||
#ifdef DOXYGEN_RUSSIAN
|
||
/*! ****************************************************************************
|
||
\ingroup TYPES_GROUP
|
||
\fn int cmplx2re(complex_t* x, int n, double* re, double* im)
|
||
\brief Преобразование массива комплексных данных в два массива
|
||
вещественных данных, содержащих реальную и мнимую части
|
||
исходного массива
|
||
|
||
Функция заполняет реальные массивы `re` и `im` соответствующими значениями
|
||
реальной и мнимой частей исходного комплексного массива `x`. \n
|
||
|
||
|
||
\param[in] x
|
||
Указатель на массив комплексных данных. \n
|
||
Размер массива `[n x 1]`. \n \n
|
||
|
||
\param[in] n
|
||
Размер массивов входных и выходных данных. \n \n
|
||
|
||
\param[out] re
|
||
Указатель на адрес массива реальной части данных. \n
|
||
Размер массива `[n x 1]`. \n
|
||
Память должна быть выделена. \n \n
|
||
|
||
\param[out] im
|
||
Указатель на адрес массива мнимой части данных. \n
|
||
Размер массива `[n x 1]`. \n
|
||
Память должна быть выделена. \n \n
|
||
|
||
\return
|
||
`RES_OK` если преобразование произведено успешно. \n
|
||
В противном случае \ref ERROR_CODE_GROUP "код ошибки": \n
|
||
|
||
Например при выполнении следующего кода
|
||
\code{.cpp}
|
||
complex_t x[3] = {{1.0, 2.0}, {3.0, 4.0}, {5.0, 6.0}};
|
||
double re[3], im[3];
|
||
|
||
cmplx2re(x, 3, re, im);
|
||
\endcode
|
||
|
||
Элементам массивов `re` и `im` будут присвоены значения:
|
||
|
||
\verbatim
|
||
re[0] = 1.0; im[0] = 2.0;
|
||
re[1] = 3.0; im[1] = 4.0;
|
||
re[2] = 5.0; im[2] = 6.0;
|
||
\endverbatim
|
||
|
||
\author Бахурин Сергей www.dsplib.org
|
||
***************************************************************************** */
|
||
#endif
|
||
int DSPL_API cmplx2re(complex_t* x, int n, double* re, double* im)
|
||
{
|
||
int k;
|
||
if(!x)
|
||
return ERROR_PTR;
|
||
if(n < 1)
|
||
return ERROR_SIZE;
|
||
|
||
if(re)
|
||
{
|
||
for(k = 0; k < n; k++)
|
||
re[k] = RE(x[k]);
|
||
}
|
||
if(im)
|
||
{
|
||
for(k = 0; k < n; k++)
|
||
im[k] = IM(x[k]);
|
||
}
|
||
return RES_OK;
|
||
}
|
||
|