errata/554: PROPOSAL - A.2.6: function_declaration BNF bug for return type declarations

From: Shalom.Bresticker@freescale.com
Date: Sun Aug 01 2004 - 08:04:02 PDT

  • Next message: Shalom.Bresticker@freescale.com: "errata/607: PROPOSAL - function returning signed integer/real/time/realtime"

    In Syntax 1-3 and in A.2.6,
    in "function_declaration", CHANGE in 2 places

      [ <b> signed </b> ] [ range_or_type ]

    TO

      [ function_range_or_type ]

    CHANGE

      range_or_type ::=
          range
        | <b> integer </b>
        | <b> real </b>
        | <b> realtime </b>
        | <b> time </b>

    TO

      function_range_or_type ::=
          [ <b> signed </b> ] [ range ]
        | <b> integer </b>
        | <b> real </b>
        | <b> realtime </b>
        | <b> time </b>

    In 10.3.1, CHANGE the following paragraph

    "A function definition shall begin with the keyword function,
    followed by the optional keyword automatic, followed by the
    optional signed designator, followed by the range or type of
    the return value from the function, followed by the name of
    the function, and then either a semicolon, or a function port
    list enclosed in parenthesis, and then a semicolon, and then
    shall end with the keyword endfunction. The use of a
    range_or_type shall be optional. A function specified without
    a range or type defaults to a one bit reg for the return value.
    If used, range_or_type shall specify the return value of the
    function is a real, an integer, a time, a realtime or a value
    with a range of [n:m] bits. A function shall have at least
    one input declared."

    TO

    "A function definition shall begin with the keyword function,
    followed by the optional keyword automatic, followed by an
    optional function_range_or_type of the return value from the
    function, followed by the name of the function, and then
    either a semicolon, or a function port list enclosed in
    parenthesis, and then a semicolon, and then
    shall end with the keyword endfunction.

    The use of a function_range_or_type shall be optional.
    A function specified without a function_range_or_type
    shall default to a one bit reg for the return value.
    If used, function_range_or_type shall specify that the
    return value of the function is a real, an integer, a time,
    a realtime, or a vector (optionally signed) with a range of
    [n:m] bits.

    A function shall have at least one input declared."

    CLOSE issue #607 as a duplicate of #554.

    http://boydtechinc.com/cgi-bin/issueproposal.pl?cmd=view&database=default&pr=554

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