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added functions poly_z2a and poly_zp2ab

pull/2/head
Dsplib 2018-03-28 00:02:37 +03:00
rodzic 43b72c39bf
commit 6fb251d989
7 zmienionych plików z 119 dodań i 49 usunięć
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71
dspl/src/filter.c 100644
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@ -0,0 +1,71 @@
/*
* Copyright (c) 2015-2018 Sergey Bakhurin
* Digital Signal Processing Library [http://dsplib.org]
*
* This file is part of libdspl-2.0.
*
* is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include "dspl.h"
/**************************************************************************************************
Zeros and poles to filter coefficients recalc
***************************************************************************************************/
int DSPL_API filter_zp2ab(complex_t *z, int nz, complex_t *p, int np, int ord, double* b, double* a)
{
complex_t *acc = NULL;
int res;
if(!z || !p || !b || !a)
return ERROR_PTR;
if(nz < 0 || np < 0)
return ERROR_SIZE;
if(nz < ord || np < ord)
return ERROR_POLY_ORD;
acc = (complex_t*) malloc((ord+1) * sizeof(complex_t));
res = poly_z2a_cmplx(z, nz, ord, acc);
if(res != RES_OK)
goto exit_label;
res = cmplx2re(acc, ord+1, b, NULL);
if(res != RES_OK)
goto exit_label;
res = poly_z2a_cmplx(p, np, ord, acc);
if(res != RES_OK)
goto exit_label;
res = cmplx2re(acc, ord+1, a, NULL);
if(res != RES_OK)
goto exit_label;
exit_label:
if(acc)
free(acc);
return res;
}

83
dspl/src/polyval.c
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@ -25,6 +25,42 @@
/**************************************************************************************************
Polynomial zeros to coefficients
***************************************************************************************************/
int DSPL_API poly_z2a_cmplx(complex_t* z, int nz, int ord, complex_t* a)
{
int k, ind, res;
complex_t x[2];
if(!z || !a)
return ERROR_PTR;
if(nz < 1)
return ERROR_SIZE;
if(nz > ord || ord < 1)
return ERROR_POLY_ORD;
RE(x[1]) = 1.0;
IM(x[1]) = 0.0;
memset(a, 0, (ord+1) * sizeof(complex_t));
RE(a[0]) = 1.0;
ind = 1;
for(k = 0; k < nz; k++)
{
RE(x[0]) = -RE(z[k]);
IM(x[0]) = -IM(z[k]);
res = conv_cmplx(a, ind, x, 2, a);
if(res!=RES_OK)
return res;
ind++;
}
return RES_OK;
}
/**************************************************************************************************
@ -88,50 +124,3 @@ int DSPL_API polyval_cmplx(complex_t* a, int ord, complex_t* x, int n, complex_t
/**************************************************************************************************
polynomial zeros to coeff reecalc
***************************************************************************************************/
int poly_z2a(complex_t *z, int nz, int ord, complex_t *a)
{
int k, ind, res;
complex_t x[2];
if(!z || !a)
return ERROR_PTR;
if(ord<0)
return ERROR_POLY_ORD;
if(nz<1 || nz > ord)
return ERROR_SIZE;
memset(a, 0, (ord+1) * sizeof(complex_t));
RE(a[0]) = 1.0;
IM(a[0]) = 0.0;
RE(x[1]) = 1.0;
IM(x[1]) = 0.0;
ind = 1;
for(k=0; k < nz; k++)
{
RE(x[0]) = -RE(z[k]);
IM(x[0]) = -IM(z[k]);
res = conv_cmplx(a, ind, x, 2, a);
if(res!=RES_OK)
return res;
ind++;
}
return RES_OK;
}

4
include/dspl.c
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@ -52,6 +52,7 @@ p_dmod dmod ;
p_farrow_lagrange farrow_lagrange ;
p_farrow_spline farrow_spline ;
p_filter_iir filter_iir ;
p_filter_zp2ab filter_zp2ab ;
p_fft fft ;
p_fft_cmplx fft_cmplx ;
p_fft_create fft_create ;
@ -66,6 +67,7 @@ p_goertzel_cmplx goertzel_cmplx ;
p_linspace linspace ;
p_log_cmplx log_cmplx ;
p_logspace logspace ;
p_poly_z2a_cmplx poly_z2a_cmplx ;
p_polyval polyval ;
p_polyval_cmplx polyval_cmplx ;
p_randn randn ;
@ -144,6 +146,7 @@ void* dspl_load()
LOAD_FUNC(farrow_lagrange);
LOAD_FUNC(farrow_spline);
LOAD_FUNC(filter_iir);
LOAD_FUNC(filter_zp2ab);
LOAD_FUNC(fft);
LOAD_FUNC(fft_cmplx);
LOAD_FUNC(fft_create);
@ -158,6 +161,7 @@ void* dspl_load()
LOAD_FUNC(linspace);
LOAD_FUNC(log_cmplx);
LOAD_FUNC(logspace);
LOAD_FUNC(poly_z2a_cmplx);
LOAD_FUNC(polyval);
LOAD_FUNC(polyval_cmplx);
LOAD_FUNC(randn);

3
include/dspl.h
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@ -207,7 +207,7 @@ DECLARE_FUNC(double,dmod, double COMMA double);
DECLARE_FUNC(int, farrow_lagrange, double* COMMA int COMMA double COMMA double COMMA double COMMA double** COMMA int*);
DECLARE_FUNC(int, farrow_spline, double* COMMA int COMMA double COMMA double COMMA double COMMA double** COMMA int*);
DECLARE_FUNC(int, filter_iir, double* COMMA double* COMMA int COMMA double* COMMA int COMMA double*);
DECLARE_FUNC(int, filter_zp2ab, complex_t* COMMA int COMMA complex_t* COMMA int COMMA int COMMA double* COMMA double*);
DECLARE_FUNC(int, fft, double* COMMA int COMMA fft_t* COMMA complex_t* );
DECLARE_FUNC(int, fft_cmplx, complex_t* COMMA int COMMA fft_t* COMMA complex_t* );
@ -223,6 +223,7 @@ DECLARE_FUNC(int, goertzel_cmplx, complex_t* COMMA int COMMA int* C
DECLARE_FUNC(int, linspace, double COMMA double COMMA int COMMA int COMMA double*);
DECLARE_FUNC(int, log_cmplx, complex_t* COMMA int COMMA complex_t*);
DECLARE_FUNC(int, logspace, double COMMA double COMMA int COMMA int COMMA double*);
DECLARE_FUNC(int, poly_z2a_cmplx, complex_t* COMMA int COMMA int COMMA complex_t*);
DECLARE_FUNC(int, polyval, double* COMMA int COMMA double* COMMA int COMMA double*);
DECLARE_FUNC(int, polyval_cmplx, complex_t* COMMA int COMMA complex_t* COMMA int COMMA complex_t*);
DECLARE_FUNC(int, randn, double* COMMA int COMMA double COMMA double);

4
release/include/dspl.c
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@ -52,6 +52,7 @@ p_dmod dmod ;
p_farrow_lagrange farrow_lagrange ;
p_farrow_spline farrow_spline ;
p_filter_iir filter_iir ;
p_filter_zp2ab filter_zp2ab ;
p_fft fft ;
p_fft_cmplx fft_cmplx ;
p_fft_create fft_create ;
@ -66,6 +67,7 @@ p_goertzel_cmplx goertzel_cmplx ;
p_linspace linspace ;
p_log_cmplx log_cmplx ;
p_logspace logspace ;
p_poly_z2a_cmplx poly_z2a_cmplx ;
p_polyval polyval ;
p_polyval_cmplx polyval_cmplx ;
p_randn randn ;
@ -144,6 +146,7 @@ void* dspl_load()
LOAD_FUNC(farrow_lagrange);
LOAD_FUNC(farrow_spline);
LOAD_FUNC(filter_iir);
LOAD_FUNC(filter_zp2ab);
LOAD_FUNC(fft);
LOAD_FUNC(fft_cmplx);
LOAD_FUNC(fft_create);
@ -158,6 +161,7 @@ void* dspl_load()
LOAD_FUNC(linspace);
LOAD_FUNC(log_cmplx);
LOAD_FUNC(logspace);
LOAD_FUNC(poly_z2a_cmplx);
LOAD_FUNC(polyval);
LOAD_FUNC(polyval_cmplx);
LOAD_FUNC(randn);

3
release/include/dspl.h
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@ -207,7 +207,7 @@ DECLARE_FUNC(double,dmod, double COMMA double);
DECLARE_FUNC(int, farrow_lagrange, double* COMMA int COMMA double COMMA double COMMA double COMMA double** COMMA int*);
DECLARE_FUNC(int, farrow_spline, double* COMMA int COMMA double COMMA double COMMA double COMMA double** COMMA int*);
DECLARE_FUNC(int, filter_iir, double* COMMA double* COMMA int COMMA double* COMMA int COMMA double*);
DECLARE_FUNC(int, filter_zp2ab, complex_t* COMMA int COMMA complex_t* COMMA int COMMA int COMMA double* COMMA double*);
DECLARE_FUNC(int, fft, double* COMMA int COMMA fft_t* COMMA complex_t* );
DECLARE_FUNC(int, fft_cmplx, complex_t* COMMA int COMMA fft_t* COMMA complex_t* );
@ -223,6 +223,7 @@ DECLARE_FUNC(int, goertzel_cmplx, complex_t* COMMA int COMMA int* C
DECLARE_FUNC(int, linspace, double COMMA double COMMA int COMMA int COMMA double*);
DECLARE_FUNC(int, log_cmplx, complex_t* COMMA int COMMA complex_t*);
DECLARE_FUNC(int, logspace, double COMMA double COMMA int COMMA int COMMA double*);
DECLARE_FUNC(int, poly_z2a_cmplx, complex_t* COMMA int COMMA int COMMA complex_t*);
DECLARE_FUNC(int, polyval, double* COMMA int COMMA double* COMMA int COMMA double*);
DECLARE_FUNC(int, polyval_cmplx, complex_t* COMMA int COMMA complex_t* COMMA int COMMA complex_t*);
DECLARE_FUNC(int, randn, double* COMMA int COMMA double COMMA double);

BIN
test/bin/dft_test.exe
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