[flang-commits] [PATCH] D125100: [flang] Fold intrinsic functions SPACING() and RRSPACING()

[Peter Klausler via Phabricator via flang-commits]

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The related real number system inquiry functions SPACING()
and RRSPACING() can be folded for constant arguments.
See 16.9.164 & 16.9.180 in Fortran 2018.


https://reviews.llvm.org/D125100

Files:
  flang/include/flang/Evaluate/real.h
  flang/lib/Evaluate/fold-real.cpp
  flang/lib/Evaluate/real.cpp
  flang/test/Evaluate/fold-spacing.f90

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