[all-commits] [llvm/llvm-project] d71297: [flang] Fix SPACING() of very small values

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d71297ce746818aea44a4714cf5c807d4ec2b5e0
      https://github.com/llvm/llvm-project/commit/d71297ce746818aea44a4714cf5c807d4ec2b5e0
  Author: Peter Klausler <pklausler at nvidia.com>
  Date:   2023-05-24 (Wed, 24 May 2023)

  Changed paths:
    M flang/lib/Evaluate/real.cpp
    M flang/runtime/numeric.cpp
    M flang/test/Evaluate/fold-spacing.f90

  Log Message:
  -----------
  [flang] Fix SPACING() of very small values

SPACING() must return TINY() for zero arguments (which we do)
and also for subnormal values smaller than TINY() in absolute value,
which we get wrong.  Fix folding and the runtime.

Differential Revision: https://reviews.llvm.org/D151272