kopia lustrzana https://github.com/Dsplib/libdspl-2.0
84 wiersze
1.7 KiB
C
84 wiersze
1.7 KiB
C
/*
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* Copyright (c) 2015-2019 Sergey Bakhurin
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* Digital Signal Processing Library [http://dsplib.org]
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*
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* This file is part of libdspl-2.0.
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*
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* is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DSPL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include "dspl.h"
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#ifdef DOXYGEN_ENGLISH
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#endif
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#ifdef DOXYGEN_RUSSIAN
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#endif
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int DSPL_API unwrap(double* phi, int n, double lev, double mar)
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{
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double a[2] = {0.0, 0.0};
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double d;
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double th;
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int k;
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int flag = 1;
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if(!phi)
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return ERROR_PTR;
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if(n<1)
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return ERROR_SIZE;
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if(lev<=0 || mar <=0)
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return ERROR_UNWRAP;
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th = mar*lev;
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while(flag)
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{
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flag = 0;
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a[0] = a[1] = 0.0;
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for(k = 0; k<n-1; k++)
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{
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d = phi[k+1] - phi[k];
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if( d > th)
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{
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a[0] -= lev;
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flag = 1;
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}
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if( d < -th)
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{
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a[0] += lev;
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flag = 1;
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}
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phi[k]+=a[1];
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a[1] = a[0];
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}
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phi[n-1]+=a[1];
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}
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return RES_OK;
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}
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