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Update example/fast_mem_fn_example.cpp

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This commit is contained in:
Peter Dimov
2024-09-18 17:39:56 +03:00
parent 71cc514bc9
commit 6403460e99
1 changed files with 7 additions and 7 deletions
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14
example/fast_mem_fn_example.cpp
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@ -13,7 +13,7 @@
#include <algorithm>
#include <functional>
#include <boost/timer.hpp>
#include <boost/timer/timer.hpp>
#include <boost/mem_fn.hpp>
#include "fast_mem_fn.hpp"
@ -91,28 +91,28 @@ template<typename F> void do_test(test_vector & v, F criterion)
int main()
{
test_vector v;
boost::timer t;
boost::timer::cpu_timer t;
double time1, time2;
std::cout <<
"Test case: sorting " << N << " objects.\n\n"
"Criterion accessor called with | elasped seconds\n"
"Criterion accessor called with | elapsed seconds\n"
"-------------------------------|----------------" << std::endl;
setup_test(v);
t.restart();
t.start();
#if !BOOST_WORKAROUND(BOOST_MSVC, < 1400)
do_test(v, BOOST_EXAMPLE_FAST_MEM_FN(& test::id));
#else // MSVC<8 does not like the implementation of the deduction macro:
do_test(v, ::example::fast_mem_fn< int (test::*)() const, & test::id >());
#endif
time1 = t.elapsed();
time1 = t.elapsed().wall * 1e-9;
std::cout << "fast_mem_fn | " << time1 << std::endl;
setup_test(v);
t.restart();
t.start();
do_test(v, boost::mem_fn(& test::id));
time2 = t.elapsed();
time2 = t.elapsed().wall * 1e-9;
std::cout << "mem_fn | " << time2 << std::endl;
std::cout << '\n' << (time2/time1-1)*100 << "% speedup" << std::endl;