c++ - c++11: short notation for pow? -

c++ - c++11: short notation for pow? -

i need paste huge formula c++11 code. formula contains numerous things double type powerfulness of integer:

it boring write:

pow(sin(b), 6) + ... pow(sin(c), 4) + ....

20 times

the best thing overload operator^ double , int, understand not possible c++11. , in formula this:

z0^2 * (something)

according precedence of operators this:

z0 ^ (2 * (something))

and not want.

so possible using trick approximate math notation x powerfulness of y c++ code?

possible toools are: c++11 , boost.

update:

about back upwards code such math notation instead of c++.

ideal solution see like:

const double result = (latex_mode (sin(b_0))^6(a + b) latex_mode_end) (b_0, a, b);

where latex_mode back upwards little subset of latex language without ambiguity. 1)all programmers touch code have mathematical background, read latex without problem 2)formula can copy/paste article without modification, cut down typo errors.

no, can't it. @ least, shouldn't. can simplified otherwise. if formula can described can create table of pairs (a,b) , write code it. example:

vector<pair<unsigned, unsigned>> table = {{1, 2}, {2, 3}, {3, 4}}; unsigned sum = 0; for(const auto& x : table) sum += pow(get<0>(x), get<1>(x));

inspired @5gon12eder's comment wrote function:

template <typename input, typename output = unsigned> output powers(std::initializer_list<input> args) { output result = 0; for(const auto x : args) result += pow(std::get<0>(x), std::get<1>(x)); homecoming result; }

you need additional (standard) library:

#tuple #initializer_list

example of use:

std::pair<unsigned, unsigned> a{1,2}, b{2,3}; std::cout << powers({a, b, {3, 4}, {4,5}}) << '\n';

that prints 1114 , it's correct.

referring edit part, can suggest write function receiving string , parsing. much slower above method. finally, can write authors of compiler.

c++ c++11