/usr/include/trilinos/NOX_Random.H is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | // $Id$
// $Source$
//@HEADER
// ************************************************************************
//
// NOX: An Object-Oriented Nonlinear Solver Package
// Copyright (2002) Sandia Corporation
//
// LOCA: Library of Continuation Algorithms Package
// Copyright (2005) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
//
// Questions? Contact Roger Pawlowski (rppawlo@sandia.gov) or
// Eric Phipps (etphipp@sandia.gov), Sandia National Laboratories.
// ************************************************************************
// CVS Information
// $Source$
// $Author$
// $Date$
// $Revision$
// ************************************************************************
//@HEADER
#ifndef NOX_RANDOM_H
#define NOX_RANDOM_H
#include "NOX_Common.H" // for string
namespace NOX {
/*!
\brief A class to compute uniformly distributed random numbers in (-1,1).
*/
/*!
The %Random class computes pseudo-random (double precision) numbers
uniformly distributed between -1.0 and 1.0 using a multiplicative
congruential generator with modulus 2^31-1 (a Lehmer generator).
For a numerical and mathematical treatment of the algorithm, see
"Random number generators: good ones are hard to find" by Stephen
K. Park and Keith W. Miller, Communications of the ACM, Vol. 31 No. 10
(1988).
*/
class Random {
public:
//! Initialize random number generator with a random seed.
/*! The random seed is computed using the POSIX rand() function. */
Random();
//! Initialize random number generator with the given seed
/*! The seed should be an integer between 1 and 2147483646 = 2^32-2
(inclusive). If the supplied seed is invalid, an error message
is printed and the seed is replaced by 1.
*/
Random(int s);
//! Set the seed to s
/*! The seed should be an integer between 1 and 2147483646 = 2^32-2
(inclusive). If the supplied seed is invalid, an error message
is printed and the seed is replaced by 1.
*/
static void setSeed(int s);
//! Compute a random number
static double number();
protected:
//! Checks that the supplied seed value is valid and returns a valid seed.
/*! The %string argument supplies the calling function name for an error
message in the case that the supplied seed is invalid.
*/
static int checkSeed(const string& func, int s);
protected:
//! Seed value
static double seed;
};
}
#endif
|