[all-commits] [llvm/llvm-project] 6fec2c: [flang] Fix x87 binary->decimal

[Peter Klausler via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 6fec2c4402ce34edc5c27202422007b12bb25797
      https://github.com/llvm/llvm-project/commit/6fec2c4402ce34edc5c27202422007b12bb25797
  Author: peter klausler <pklausler at nvidia.com>
  Date:   2020-05-04 (Mon, 04 May 2020)

  Changed paths:
    M flang/include/flang/Common/uint128.h
    M flang/include/flang/Decimal/binary-floating-point.h
    M flang/lib/Decimal/big-radix-floating-point.h
    M flang/lib/Decimal/binary-to-decimal.cpp
    M flang/lib/Decimal/decimal-to-binary.cpp
    M flang/runtime/edit-output.cpp

  Log Message:
  -----------
  [flang] Fix x87 binary->decimal

Summary:
Fix decimal formatting of 80-bit x87 values; the calculation ofnearest neighbor values failed to account for the explicitmost significant bit in that format.

Replace MultiplyByRounded with MultiplyBy in binary->decimal conversions,
since rounding won't happen and the name was misleading; then remove
dead code, and migrate LoseLeastSignificantDigit() from one source file
to another where it's still needed.

Reviewers: tskeith, sscalpone, jdoerfert, DavidTruby

Reviewed By: tskeith

Subscribers: llvm-commits, flang-commits

Tags: #flang, #llvm

Differential Revision: https://reviews.llvm.org/D79345