include/comphelper/random.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef INCLUDED_COMPHELPER_RANDOM_HXX
  11 #define INCLUDED_COMPHELPER_RANDOM_HXX
  12
  13 #include <comphelper/comphelperdllapi.h>
  14
  15 namespace comphelper::rng
  16 {
  17 // These functions obey the SAL_RAND_REPEATABLE environment
  18 // variable: If it is set, use a fixed seed.
  19
  20 COMPHELPER_DLLPUBLIC void reseed();
  21
  22 // note that uniform_int_distribution is inclusive of b, i.e. [a,b] while
  23 // uniform_real_distribution is exclusive of b, i.e. [a,b), std::nextafter may be your friend there
  24
  25 /// uniform distribution in [a,b)
  26 COMPHELPER_DLLPUBLIC double uniform_real_distribution(double a = 0.0, double b = 1.0);
  27
  28 /// uniform distribution in [a,b]
  29 COMPHELPER_DLLPUBLIC int uniform_int_distribution(int a, int b);
  30
  31 /// uniform distribution in [a,b]
  32 COMPHELPER_DLLPUBLIC unsigned int uniform_uint_distribution(unsigned int a, unsigned int b);
  33
  34 /// uniform distribution in [a,b]
  35 COMPHELPER_DLLPUBLIC size_t uniform_size_distribution(size_t a, size_t b);
  36
  37 } // namespace
  38
  39 #endif
  40
  41 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */