kopia lustrzana https://github.com/Dsplib/libdspl-2.0
58 wiersze
1.4 KiB
C
58 wiersze
1.4 KiB
C
/*
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* Copyright (c) 2015-2020 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 <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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int DSPL_API find_nearest(double* x, int n, double val, int *idx, double* dist)
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{
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double mind, dv;
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int iv, i;
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if(!x)
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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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mind = fabs(x[0] - val);
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iv = 0;
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for(i = 1; i < n; i++)
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{
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dv = fabs(x[i] - val);
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if( dv < mind)
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{
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mind = dv;
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iv = i;
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}
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}
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if(idx)
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*idx = iv;
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if(dist)
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*dist = fabs(x[iv] - val);
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return RES_OK;
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} |