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/* utrnhm.c CCMATH mathematics library source code.
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* Copyright (C) 2000 Daniel A. Atkinson All rights reserved.
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* This code may be redistributed under the terms of the GNU library
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* public license (LGPL). ( See the lgpl.license file for details.)
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* ------------------------------------------------------------------------
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void utrnhm(Cpx * hm, Cpx * a, Cpx * b, int n)
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Cpx z, *q0, *p, *s, *t;
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q0 = (Cpx *) calloc(n, sizeof(Cpx));
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for (i = 0; i < n; ++i) {
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for (j = 0, t = b; j < n; ++j) {
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for (k = 0, s = a + i * n; k < n; ++k, ++s, ++t) {
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z.re += t->re * s->re + t->im * s->im;
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z.im += t->im * s->re - t->re * s->im;
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for (j = 0, p = hm + i, t = a; j <= i; ++j, p += n) {
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for (k = 0, s = q0; k < n; ++k, ++t, ++s) {
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z.re += t->re * s->re - t->im * s->im;
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z.im += t->im * s->re + t->re * s->im;