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[flang] Document BOZ initializers for REAL

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Original-commit: flang-compiler/f18@d72d5feb01
Reviewed-on: https://github.com/flang-compiler/f18/pull/590
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peter klausler 2019-07-17 14:29:11 -07:00
parent 3dbc1b7abe
commit 99ec2fa834
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flang/documentation/Extensions.md
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@ -82,6 +82,8 @@ Extensions, deletions, and legacy features supported by default
of INTEGER entities, and as actual arguments to a few intrinsic functions
(ACHAR, BTEST, CHAR). But they cannot be used if the type would not
be known (e.g., `IAND(X'1',X'2')`).
* BOZ literals can also be used as REAL values in some contexts where the
type is unambiguous, such as initializations of REAL parameters.
* EQUIVALENCE of numeric and character sequences (a ubiquitous extension)
* Values for whole anonymous parent components in structure constructors
(e.g., `EXTENDEDTYPE(PARENTTYPE(1,2,3))` rather than `EXTENDEDTYPE(1,2,3)`