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mux

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-06-03 19:50:25 -07:00 • committed by Nuno Lopes
parent 2788f72bbb
commit 9262908ebb
30 changed files with 191 additions and 341 deletions
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5
src/util/rational.cpp
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@ -17,6 +17,7 @@ Revision History:
--*/
#include<sstream>
#include<mutex>
#include "util/util.h"
#include "util/rational.h"
#ifdef _WINDOWS
@ -42,9 +43,11 @@ static void mk_power_up_to(vector<rational> & pws, unsigned n) {
}
}
static std::mutex g_powers_of_two;
rational rational::power_of_two(unsigned k) {
rational result;
#pragma omp critical (powers_of_two)
std::lock_guard<std::mutex> lock(g_powers_of_two);
{
if (k >= m_powers_of_two.size())
mk_power_up_to(m_powers_of_two, k+1);