libdspl-2.0/dspl/src/types/cmplx2re.c

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New project structure for filter design algorithms Changes to be committed: deleted: dspl/src/conv.c new file: dspl/src/convolution.c new file: dspl/src/convolution/conv.c new file: dspl/src/convolution/conv_cmplx.c new file: dspl/src/convolution/conv_fft.c new file: dspl/src/convolution/conv_fft_cmplx.c new file: dspl/src/convolution/filter_iir.c deleted: dspl/src/ellipj.c deleted: dspl/src/filter_an.c deleted: dspl/src/filter_ap.c new file: dspl/src/filter_design.c new file: dspl/src/filter_design/bilinear.c new file: dspl/src/filter_design/butter_ap.c new file: dspl/src/filter_design/butter_ap_zp.c new file: dspl/src/filter_design/cheby1_ap.c new file: dspl/src/filter_design/cheby1_ap_zp.c new file: dspl/src/filter_design/cheby2_ap.c new file: dspl/src/filter_design/cheby2_ap_wp1.c new file: dspl/src/filter_design/cheby2_ap_zp.c new file: dspl/src/filter_design/ellip_ap.c new file: dspl/src/filter_design/ellip_ap_zp.c new file: dspl/src/filter_design/filter_freq_resp.c new file: dspl/src/filter_design/filter_ws1.c new file: dspl/src/filter_design/filter_zp2ab.c renamed: dspl/src/filter_fir.c -> dspl/src/filter_design/fir_linphase.c new file: dspl/src/filter_design/fir_linphase_lpf.c new file: dspl/src/filter_design/freqs.c new file: dspl/src/filter_design/freqs2time.c new file: dspl/src/filter_design/freqs_cmplx.c new file: dspl/src/filter_design/freqz.c new file: dspl/src/filter_design/group_delay.c renamed: dspl/src/filter_iir.c -> dspl/src/filter_design/iir.c new file: dspl/src/filter_design/iir_ap.c new file: dspl/src/filter_design/low2bp.c new file: dspl/src/filter_design/low2bs.c new file: dspl/src/filter_design/low2high.c new file: dspl/src/filter_design/low2low.c new file: dspl/src/filter_design/phase_delay.c new file: dspl/src/filter_design/ratcompos.c deleted: dspl/src/filter_ft.c new file: dspl/src/math_ellipj.c new file: dspl/src/math_ellipj/ellip_acd.c new file: dspl/src/math_ellipj/ellip_acd_cmplx.c new file: dspl/src/math_ellipj/ellip_asn.c new file: dspl/src/math_ellipj/ellip_asn_cmplx.c new file: dspl/src/math_ellipj/ellip_cd.c new file: dspl/src/math_ellipj/ellip_cd_cmplx.c new file: dspl/src/math_ellipj/ellip_landen.c new file: dspl/src/math_ellipj/ellip_modulareq.c new file: dspl/src/math_ellipj/ellip_rat.c new file: dspl/src/math_ellipj/ellip_sn.c new file: dspl/src/math_ellipj/ellip_sn_cmplx.c new file: dspl/src/types.c renamed: dspl/src/complex.c -> dspl/src/types/cmplx2re.c new file: dspl/src/types/re2cmplx.c new file: dspl/src/unwrap.c
2021-12-29 13:31:00 +00:00
/*
* 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;
}