kopia lustrzana https://github.com/Dsplib/libdspl-2.0
48 wiersze
1.1 KiB
C
48 wiersze
1.1 KiB
C
/*
|
|
* Copyright (c) 2015-2024 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
|
|
|
|
#endif
|
|
#ifdef DOXYGEN_RUSSIAN
|
|
|
|
#endif
|
|
int DSPL_API trapint(double* x, double* y, int n, double* sum)
|
|
{
|
|
int k;
|
|
|
|
if(!x || !y)
|
|
return ERROR_PTR;
|
|
if(n<2)
|
|
return ERROR_SIZE;
|
|
*sum = 0.0;
|
|
|
|
for(k = 1; k < n; k++)
|
|
*sum += 0.5 * (x[k] - x[k-1]) * (y[k] + y[k-1]);
|
|
|
|
return RES_OK;
|
|
}
|