MFEM v4.7.0
Finite element discretization library
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util.hpp
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1// Copyright (c) 2010-2024, Lawrence Livermore National Security, LLC. Produced
2// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
3// LICENSE and NOTICE for details. LLNL-CODE-806117.
4//
5// This file is part of the MFEM library. For more information and source code
6// availability visit https://mfem.org.
7//
8// MFEM is free software; you can redistribute it and/or modify it under the
9// terms of the BSD-3 license. We welcome feedback and contributions, see file
10// CONTRIBUTING.md for details
11
12#ifndef SPDE_UTIL_HPP
13#define SPDE_UTIL_HPP
14
15#include <random>
16#include <vector>
17#include "mfem.hpp"
18
19namespace mfem
20{
21
22/// Fills the vector x with random numbers between a and b.
23void FillWithRandomNumbers(std::vector<real_t> &x, real_t a = 0.0,
24 real_t b = 1.0);
25
26/// This function creates random rotation matrices (3 x 3) and stores them in
27/// the vector. That means, x[0-8] is the first rotation matrix, x[9-17] is
28/// the second and so forth. Size of the vector determines the number of
29/// rotation that fit into the vector and should be a multiple of 9.
30void FillWithRandomRotations(std::vector<real_t> &x);
31
32} // namespace mfem
33
34#endif // SPDE_UTIL_HPP
real_t b
Definition lissajous.cpp:42
real_t a
Definition lissajous.cpp:41
void FillWithRandomRotations(std::vector< real_t > &x)
Definition util.cpp:26
void FillWithRandomNumbers(std::vector< real_t > &x, real_t a, real_t b)
Fills the vector x with random numbers between a and b.
Definition util.cpp:18
float real_t
Definition config.hpp:43