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Differential D127435

[flang][docs] Document extension: Ew.0 output editing
ClosedPublic

Authored by klausler on Jun 9 2022, 12:19 PM.

Details

Reviewers
vdonaldson
Commits
rG89e4b7564888: [flang] Document extension: Ew.0 output editing
Summary

The restrictions on the relationship between a "kP" scale factor
and a Ew.d/Dw.d/Gw.d significant digit count are not enforced for
output editing when there is no nonzero scale factor in effect.
(An error message about a bad scale factor is confusing if no kP
control edit descriptor has been used.) Document this usage in
Extensions.md.

Diff Detail

Event Timeline

klausler created this revision.Jun 9 2022, 12:19 PM
Herald added a project: Restricted Project. · View Herald TranscriptJun 9 2022, 12:19 PM
Herald added a subscriber: jdoerfert. · View Herald Transcript
klausler requested review of this revision.Jun 9 2022, 12:19 PM
Harbormaster completed remote builds in B168892: Diff 435644.Jun 9 2022, 1:02 PM
klausler added a reviewer: vdonaldson.Jun 13 2022, 9:00 AM
vdonaldson accepted this revision.Jun 13 2022, 9:01 AM
This revision is now accepted and ready to land.Jun 13 2022, 9:01 AM
Closed by commit rG89e4b7564888: [flang] Document extension: Ew.0 output editing (authored by klausler). · Explain WhyJun 13 2022, 11:50 AM
This revision was automatically updated to reflect the committed changes.
klausler added a commit: rG89e4b7564888: [flang] Document extension: Ew.0 output editing.

Revision Contents

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docs/
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Diff 436498

flang/docs/Extensions.md

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* At runtime, `NAMELIST` input will skip over `NAMELIST` groups * At runtime, `NAMELIST` input will skip over `NAMELIST` groups
with other names, and will treat text before and between groups with other names, and will treat text before and between groups
as if they were comment lines, even if not begun with `!`. as if they were comment lines, even if not begun with `!`.
* Commas are required in FORMAT statements and character variables * Commas are required in FORMAT statements and character variables
only when they prevent ambiguity. only when they prevent ambiguity.
* Legacy names `AND`, `OR`, and `XOR` are accepted as aliases for * Legacy names `AND`, `OR`, and `XOR` are accepted as aliases for
the standard intrinsic functions `IAND`, `IOR`, and `IEOR` the standard intrinsic functions `IAND`, `IOR`, and `IEOR`
respectively. respectively.
* A digit count of d=0 is accepted in Ew.0, Dw.0, and Gw.0 output
editing if no nonzero scale factor (kP) is in effect.
### Extensions supported when enabled by options ### Extensions supported when enabled by options
* C-style backslash escape sequences in quoted CHARACTER literals * C-style backslash escape sequences in quoted CHARACTER literals
(but not Hollerith) [-fbackslash] (but not Hollerith) [-fbackslash]
* Logical abbreviations `.T.`, `.F.`, `.N.`, `.A.`, `.O.`, and `.X.` * Logical abbreviations `.T.`, `.F.`, `.N.`, `.A.`, `.O.`, and `.X.`
[-flogical-abbreviations] [-flogical-abbreviations]
* `.XOR.` as a synonym for `.NEQV.` [-fxor-operator] * `.XOR.` as a synonym for `.NEQV.` [-fxor-operator]
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