?? qtrap.cpp
字號:
void qtrap(double a, double b, double& s)
{
double eps = 0.000001;
int jmax = 20;
double olds = -1e+30;
for (int j = 1; j<=jmax; j++)
{
trapzd(a, b, s, j);
if (fabs(s - olds) < eps * fabs(olds))
{
return;
}
olds = s;
}
cout<<"too many steps."<<endl;
}
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