GRASS GIS 7 Programmer's Manual  7.5.svn(2017)-r71793
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hconj.c
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1 /* hconj.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 "ccmath.h"
9 void hconj(Cpx * a, int n)
10 {
11  Cpx s, *p, *q;
12 
13  int i, j, e;
14 
15  for (i = 0, e = n - 1; i < n; ++i, --e, a += n + 1) {
16  for (j = 0, p = a + 1, q = a + n; j < e; ++j) {
17  s = *p;
18  s.im = -s.im;
19  p->re = q->re;
20  (p++)->im = -q->im;
21  *q = s;
22  q += n;
23  }
24  a->im = -a->im;
25  }
26 }
void hconj(Cpx *u, int n)
Definition: hconj.c:9
double re
Definition: ccmath.h:38
double im
Definition: ccmath.h:38
Definition: la.h:54