[PATCH] D36895: Add a class for fixed point arithmetic

[Evgeny Stupachenko via Phabricator via llvm-commits]

evstupac created this revision.
Herald added a subscriber: mgorny.

The patch add FixedPoint64 class for unsigned fixed point arithmetic and corresponding tests.
The new class will be used to update https://reviews.llvm.org/D30527.
I've skipped signed arithmetic, because the class is supposed to be used to work with probabilities and costs.
For now point is fixed in the middle [32 bits].[32 bits], which makes calculations simple and fast.


Repository:
  rL LLVM

https://reviews.llvm.org/D36895

Files:
  include/llvm/ADT/FixedPoint.h
  unittests/ADT/CMakeLists.txt
  unittests/ADT/FixedPoint.cpp

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