kopia lustrzana https://github.com/Dsplib/libdspl-2.0
68 wiersze
1.5 KiB
C
68 wiersze
1.5 KiB
C
/*
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* Copyright (c) 2015-2024 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 DSPL.
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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 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 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 <stdio.h>
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#include <stdlib.h>
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#include <string.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 histogram(double* x, int n, int nh, double* pedges, double* ph)
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{
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double xmin, xmax;
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int k, ind;
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int res;
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if(!x || !pedges || !ph)
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return ERROR_PTR;
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if(n<1 || nh<1)
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return ERROR_SIZE;
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res = minmax(x, n, &xmin, &xmax);
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if(res != RES_OK)
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return res;
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res = linspace(xmin, xmax, nh+1, DSPL_SYMMETRIC, pedges);
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if(res != RES_OK)
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return res;
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memset(ph, 0, nh*sizeof(double));
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for(k = 0; k < n; k++)
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{
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ind = 0;
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while(ind<nh && x[k]>=pedges[ind])
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ind++;
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ph[ind-1]+=1.0;
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}
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return RES_OK;
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}
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