Binary search with returned index in STL?

Question

I need a binary search function.

I couldn\'t find any function in the standard library that will return the index of the found item, and if it wasn\'t found,

Answer 1

Clearly, this "will return the bitwise complement" is a big deal for you and I do not understand what you mean. That said, lookup std::upper_bound and see if it does what you want.