-/* Copyright (c) 2019-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2022. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
{
SECTION("Using XBT_RNG_xbt")
{
+ simgrid::xbt::random::set_implem_xbt();
simgrid::xbt::random::set_mersenne_seed(12345);
REQUIRE_THAT(simgrid::xbt::random::exponential(25), EpsilonApprox(0.00291934351538427348));
REQUIRE(simgrid::xbt::random::uniform_int(1, 6) == 4);
REQUIRE_THAT(simgrid::xbt::random::uniform_real(0, 1), EpsilonApprox(0.31637556043369124970));
REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(1.62746784745133976635));
+
+ constexpr int imin = std::numeric_limits<int>::min();
+ constexpr int imax = std::numeric_limits<int>::max();
+ REQUIRE(simgrid::xbt::random::uniform_int(0, 0) == 0);
+ REQUIRE(simgrid::xbt::random::uniform_int(imin, imin) == imin);
+ REQUIRE(simgrid::xbt::random::uniform_int(imax, imax) == imax);
+
+ REQUIRE(simgrid::xbt::random::uniform_int(-6, -1) == -3);
+ REQUIRE(simgrid::xbt::random::uniform_int(-10, 10) == 7);
+ REQUIRE(simgrid::xbt::random::uniform_int(imin, 2) == -163525263);
+ REQUIRE(simgrid::xbt::random::uniform_int(-2, imax) == 1605979225);
+ REQUIRE(simgrid::xbt::random::uniform_int(imin, imax) == 659577591);
}
SECTION("Using XBT_RNG_std")
std::mt19937 gen;
gen.seed(12345);
- simgrid::xbt::random::set_mersenne_seed(12345);
simgrid::xbt::random::set_implem_std();
+ simgrid::xbt::random::set_mersenne_seed(12345);
- std::exponential_distribution<> distA(25);
- std::uniform_int_distribution<> distB(1, 6);
- std::uniform_real_distribution<> distC(0, 1);
- std::normal_distribution<> distD(0, 2);
+ std::exponential_distribution distA(25.0);
+ std::uniform_int_distribution distB(1, 6);
+ std::uniform_real_distribution distC(0.0, 1.0);
+ std::normal_distribution distD(0.0, 2.0);
REQUIRE_THAT(simgrid::xbt::random::exponential(25), EpsilonApprox(distA(gen)));
REQUIRE(simgrid::xbt::random::uniform_int(1, 6) == distB(gen));
REQUIRE_THAT(simgrid::xbt::random::uniform_real(0, 1), EpsilonApprox(distC(gen)));
REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(distD(gen)));
}
+
+ SECTION("XBT_RNG_std write to a file")
+ {
+ simgrid::xbt::random::set_implem_std();
+ simgrid::xbt::random::set_mersenne_seed(12345);
+
+ simgrid::xbt::random::exponential(25);
+ bool writtenA = simgrid::xbt::random::write_mersenne_state("rdm_state_tmp.txt");
+ double resB = simgrid::xbt::random::uniform_real(10, 20);
+ double resC = simgrid::xbt::random::normal(0, 2);
+ bool writtenB = simgrid::xbt::random::read_mersenne_state("rdm_state_tmp.txt");
+ REQUIRE(writtenA);
+ REQUIRE(writtenB);
+ REQUIRE_THAT(simgrid::xbt::random::uniform_real(10, 20), EpsilonApprox(resB));
+ REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(resC));
+ if (writtenB) {
+ std::remove("rdm_state_tmp.txt");
+ }
+ }
}