GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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eigen.c
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1/* eigen.c CCMATH mathematics library source code.
2 *
3 * Copyright (C) 2000 Daniel A. Atkinson All rights reserved.
4 * This code may be redistributed under the terms of the GNU library
5 * public license (LGPL). ( See the lgpl.license file for details.)
6 * ------------------------------------------------------------------------
7 */
8#include <stdlib.h>
9#include "ccmath.h"
10void eigen(double *a, double *ev, int n)
11{
12 double *dp;
13
14 dp = (double *)calloc(n, sizeof(double));
15 housev(a, ev, dp, n);
16 qrevec(ev, a, dp, n);
17 trnm(a, n);
18 free(dp);
19}
int qrevec(double *eval, double *evec, double *dp, int n)
Definition qrevec.c:9
void trnm(double *a, int n)
Definition trnm.c:8
void housev(double *a, double *d, double *ud, int n)
Definition housev.c:10
void eigen(double *a, double *ev, int n)
Definition eigen.c:10