double testFib(int a)
{
Clock clk;
uint64_t val = fib(a);
(void)val;
return clk.getSeconds();
}
void testDelegates(int a,int b)
{
void (*ptr)(int) = &doSomethingSilly;
Delegate<void,int> instaDelegate = &doSomethingSilly;
Delegate<void,int,int> indirectDelegate = &doSomethingSilly;
Delegate<void,int> lambdaDelegate = [](int n)
{
int *t = new int[n];
for (int i=0;i<n;++i)
{
t[i] = int(t[i]+i);
}
delete[] t;
};
function<void(int)> stdFunc = &doSomethingSilly;
Clock clk;
cout << "calling w/ "<<a<<", "<<b<<" times\t";
clk.restart(); for (int i=0;i<b;++i) ptr(a);
cout << getWithLeading0(clk.getSeconds()*1000,6);
clk.restart(); for (int i=0;i<b;++i) instaDelegate(a);
cout << getWithLeading0(clk.getSeconds()*1000,6);
clk.restart(); for (int i=0;i<b;++i) indirectDelegate(a,42);
cout << getWithLeading0(clk.getSeconds()*1000,6);
clk.restart(); for (int i=0;i<b;++i) lambdaDelegate(a);
cout << getWithLeading0(clk.getSeconds()*1000,6);
clk.restart(); for (int i=0;i<b;++i) stdFunc(a);
cout << getWithLeading0(clk.getSeconds()*1000,6);
cout << endl;
}
int main()
{
cout << "times to calculate fibonacci numbers:" << endl;
Clock allClk;
for (int i=20;allClk.getSeconds() < 2;++i)
{
double t = testFib(i);
cout << "fib(" << getWithLeading0(i,2) << ") -> " << getWithLeading0(t*1000) << "ms ";
cout << string(int(80*t),' ') << "x" << endl;
}
cout << endl;
cout << "benchmarking delegates" << endl;
testDelegates(10,2000000);
testDelegates(100,500000);
testDelegates(1000,50000);
testDelegates(10000,5000);
testDelegates(100000,500);
}
