J3/02-196

Date:     May 13, 2002
To:       J3
From:     Rob James/Interop
Subject:  Unresolved issue 366


This paper will correct some problems with the cross-references to the
C standard in section 15 (as noted in unresolved issue 366), as well
as some problems with Table 15.6.

Edits:

[381:7]  Section 6.2.2 of the C standard describes linkage.
         "6.1.2.2" => "6.2.2"

[382:9-] Delete J3 internal note.

[383:18] Section 6.3.2.3 of the C standard describes conversions
         between pointer types.  We should also refer to 6.5.9, where
         the equality operators are described.
         After "6.3.2.3", add "and 6.5.9".

[385:0+] There are a few changes that need to be made in Table 15.6.
         In the last column of the table, the types "signed int",
         "signed short int", "signed long int", "signed long long int"
         are listed, but they are only defined in the C standard as
         alternate forms of the signed integer types "int", "short
         int", "long int", and "long long int", respectively.  Since
         those types are already listed, we can remove their alternate
         forms from the table.
         Delete "signed int", "signed short int", "signed long int", and
         "signed long long int" from Table 15.6.


[385:0+] There is no type "c_intmax_t" defined in the C standard.  The
         correct type is "intmax_t".
         In Table 15.6, "c_intmax_t" => "intmax_t".

[385:0+] The _Imaginary types are not defined in the normative text of
         the C standard, only in informative text (Annex G).  Only the
         syntax is defined in the normative text.  Since, conceivably,
         these types could have different linkage conventions than the
         regular floating point types, we should not specify that they
         are interoperable with Fortran real types.
         Delete "float _Imaginary", "double _Imaginary", and "long
         double _Imaginary" from Table 15.6.

[385:0+] The type "_Complex" is not defined in the C standard.
         However, "float _Complex" is defined.  We should change the
         reference to the "_Complex" type to "float _Complex".  Also,
         we should be more consistent in the naming of the
         corresponding ISO_C_BINDING constant.  This should be changed
         from "C_COMPLEX" to "C_FLOAT_COMPLEX".
         In the row in which "C_COMPLEX" appears in Table 15.6,
         "C_COMPLEX" => "C_FLOAT_COMPLEX" and "_Complex" => "float
         _Complex".

[385:0+] The types in this table are not all defined in 6.2.5 of the C
         standard, as it says in the last row of Table 15.6.  size_t
         is defined in 7.17, intmax_t is defined in 7.18.1.5, and the
         int_least*_t and int_fast*_t types are defined in 7.18.1.
         In the last row of Table 15.6, "clause 6.2.5." => "clauses
         6.2.5, 7.17, and 7.18.1."

[389:5]  Some of the interoperable C types are defined in sections
         other than 6.2.5, as explained above.
         "6.2.5" => "6.2.5, 7.17, and 7.18.1"

[392:13] Signal handlers are described in 7.14.1 of the C standard.
         "7.4.1.1" => "7.14.1"