Restarted the production of the app
This commit is contained in:
@@ -0,0 +1,73 @@
|
||||
/*
|
||||
* Created by Martin on 30/08/2017.
|
||||
*
|
||||
* Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||||
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
*/
|
||||
|
||||
#include "catch_random_number_generator.h"
|
||||
#include "catch_context.h"
|
||||
#include "catch_run_context.h"
|
||||
#include "catch_interfaces_config.h"
|
||||
|
||||
namespace Catch {
|
||||
|
||||
namespace {
|
||||
|
||||
#if defined(_MSC_VER)
|
||||
#pragma warning(push)
|
||||
#pragma warning(disable:4146) // we negate uint32 during the rotate
|
||||
#endif
|
||||
// Safe rotr implementation thanks to John Regehr
|
||||
uint32_t rotate_right(uint32_t val, uint32_t count) {
|
||||
const uint32_t mask = 31;
|
||||
count &= mask;
|
||||
return (val >> count) | (val << (-count & mask));
|
||||
}
|
||||
|
||||
#if defined(_MSC_VER)
|
||||
#pragma warning(pop)
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
|
||||
SimplePcg32::SimplePcg32(result_type seed_) {
|
||||
seed(seed_);
|
||||
}
|
||||
|
||||
|
||||
void SimplePcg32::seed(result_type seed_) {
|
||||
m_state = 0;
|
||||
(*this)();
|
||||
m_state += seed_;
|
||||
(*this)();
|
||||
}
|
||||
|
||||
void SimplePcg32::discard(uint64_t skip) {
|
||||
// We could implement this to run in O(log n) steps, but this
|
||||
// should suffice for our use case.
|
||||
for (uint64_t s = 0; s < skip; ++s) {
|
||||
static_cast<void>((*this)());
|
||||
}
|
||||
}
|
||||
|
||||
SimplePcg32::result_type SimplePcg32::operator()() {
|
||||
// prepare the output value
|
||||
const uint32_t xorshifted = static_cast<uint32_t>(((m_state >> 18u) ^ m_state) >> 27u);
|
||||
const auto output = rotate_right(xorshifted, m_state >> 59u);
|
||||
|
||||
// advance state
|
||||
m_state = m_state * 6364136223846793005ULL + s_inc;
|
||||
|
||||
return output;
|
||||
}
|
||||
|
||||
bool operator==(SimplePcg32 const& lhs, SimplePcg32 const& rhs) {
|
||||
return lhs.m_state == rhs.m_state;
|
||||
}
|
||||
|
||||
bool operator!=(SimplePcg32 const& lhs, SimplePcg32 const& rhs) {
|
||||
return lhs.m_state != rhs.m_state;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user