You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.1 KiB
37 lines
1.1 KiB
#include <iostream>
|
|
#include <ginac/ginac.h>
|
|
|
|
using namespace std;
|
|
using namespace GiNaC;
|
|
|
|
// 递归函数，将表达式中的所有子项存储到列表中
|
|
void collect_sub_expressions(const ex& expr, lst& sub_expressions) {
|
|
if (is_a<add>(expr) || is_a<mul>(expr)) {
|
|
for (const auto& op : expr) {
|
|
collect_sub_expressions(op, sub_expressions);
|
|
}
|
|
} else {
|
|
sub_expressions.append(expr);
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
int cnt=0;
|
|
for(double i=-10;i<=10;i+=0.1)
|
|
for(double j=-10;j<=10;j=j+0.1)
|
|
{
|
|
// lst t1={s==i,t==j};
|
|
// double curw=ex_to<numeric>(subs(f[3],t1)).to_double();
|
|
// if(curw>=-0.01&&curw<=0.01)
|
|
// continue;
|
|
// double curx=ex_to<numeric>(subs(f[0],t1)).to_double();
|
|
// double cury=ex_to<numeric>(subs(f[1],t1)).to_double();
|
|
// double curz=ex_to<numeric>(subs(f[2],t1)).to_double();
|
|
// points(cnt,0)=curx/curw;
|
|
// points(cnt,1)=cury/curw;
|
|
// points(cnt,2)=curz/curw;
|
|
cnt++;
|
|
}
|
|
cout<<cnt<<endl;
|
|
return 0;
|
|
}
|
|
|