[PATCH] D63061: [builtins] Fix overflow issue for complex division with big numbers

[Sr.Zhang via Phabricator via llvm-commits]

zsrkmyn created this revision.
zsrkmyn added a reviewer: howard.hinnant.
Herald added projects: LLVM, Sanitizers.
Herald added subscribers: Sanitizers, llvm-commits.

`__div*c3` functions get overflow with large numbers, e.g. `(DBL_MAX + DBL_MAXi) / (0.5DBL_MAX + 0.5DBL_MAXi)` for `__divdc3`.
This patch tries to fix them.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D63061

Files:
  lib/builtins/divdc3.c
  lib/builtins/divsc3.c
  lib/builtins/divtc3.c
  lib/builtins/divxc3.c
  test/builtins/Unit/divdc3_test.c
  test/builtins/Unit/divsc3_test.c
  test/builtins/Unit/divtc3_test.c
  test/builtins/Unit/divxc3_test.c

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