[all-commits] [llvm/llvm-project] b39f1e: [libc] Fix printf %f rounding condition

[michaelrj-google via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b39f1e5c13897b69c314febd014895a5ed23696e
      https://github.com/llvm/llvm-project/commit/b39f1e5c13897b69c314febd014895a5ed23696e
  Author: Michael Jones <michaelrj at google.com>
  Date:   2023-03-01 (Wed, 01 Mar 2023)

  Changed paths:
    M libc/src/stdio/printf_core/float_dec_converter.h
    M libc/test/src/stdio/sprintf_test.cpp

  Log Message:
  -----------
  [libc] Fix printf %f rounding condition

When running the tbin2dec tests I found a rounding error in my code.
Upon inspection I realized it was due to a lack of parenthesis when
calculating the number of trailing digits. This patch fixes that mistake
and adds unit tests to catch regressions in future.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D145011