55 lines
870 B
C++
55 lines
870 B
C++
/* $Id: factory.cpp 148 2005-04-19 15:12:26Z kamenik $ */
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/* Copyright 2004, Ondra Kamenik */
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#include "factory.hh"
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#include <cstdlib>
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#include <cmath>
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void
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Factory::init(const Symmetry &s, const IntSequence &nvs)
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{
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IntSequence sym(s);
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long int seed = sym[0];
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seed = 256*seed + nvs[0];
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if (sym.size() > 1)
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seed = 256*seed + sym[1];
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if (nvs.size() > 1)
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seed = 256*seed + nvs[0];
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srand48(seed);
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}
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void
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Factory::init(int dim, int nv)
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{
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long int seed = dim;
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seed = 256*seed + nv;
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srand48(seed);
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}
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double
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Factory::get() const
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{
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return 1.0*(drand48()-0.5);
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}
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void
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Factory::fillMatrix(TwoDMatrix &m) const
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{
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Vector &d = m.getData();
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for (int i = 0; i < d.length(); i++)
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d[i] = get();
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}
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Vector *
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Factory::makeVector(int n)
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{
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init(n, n*n);
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auto *v = new Vector(n);
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for (int i = 0; i < n; i++)
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(*v)[i] = get();
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return v;
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}
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