tree 06b6b924184d20c9fb8f8139a5714973a0aa1cd6
parent 837a0c15dd0a3981f3d587f733d85281f6c66bf1
author Arthur O'Dwyer <arthur.j.odwyer@gmail.com> 1608964743 -0500
committer Copybara-Service <copybara-worker@google.com> 1611606447 -0800

[libc++] Implement [P0769] "Add shift to algorithm" (shift_left, shift_right)

I believe this is a complete implementation of std::shift_left and std::shift_right from
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0769r2.pdf

Some test cases copied-with-modification from D60027.

Differential Revision: https://reviews.llvm.org/D93819

GitOrigin-RevId: 3fbd3eaf28c1e6f2bb9519022611829dfe3b0464