[libc-commits] [PATCH] D124959: [libc] add uint128 implementation

[Michael Jones via Phabricator via libc-commits]

michaelrj created this revision.
Herald added subscribers: libc-commits, ecnelises, tschuett, mgorny.
Herald added projects: libc-project, All.
michaelrj requested review of this revision.

Some platforms don't support proper 128 bit integers, but some
algorithms use them, specifically string to float conversions. This adds
an implementation of uint128 that supports most of the major operators,
and also only uses 64 bit integers. This does not put this new class
into use, that will be in followup patches.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D124959

Files:
  libc/src/__support/CMakeLists.txt
  libc/src/__support/UInt128.h
  libc/src/__support/str_to_float.h
  libc/test/src/__support/CMakeLists.txt
  libc/test/src/__support/uint128_test.cpp

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