IBM extension

Keywords for language extensions

In addition to standard language keywords, ILE C/C++ reserves the following keywords for use in language extensions and for future use:

Table 5. Keywords for C and C++ language extensions
__alignof
__alignof__
__attribute__
__attribute
__const__
_Decimal321
_Decimal641
_Decimal1281
__extension__
__label__
__inline__
__restrict
__restrict__
__signed__
__signed
__volatile__
__thread 1
typeof
__typeof__
decimal
_Decimal
__align
_Packed
__ptr128
__ptr64
Notes:
  1. These keywords are recognized only when LANGLVL(*EXTENDED) is specified.
C++ only

ILE C++ reserves the following keywords as language extensions for compatibility with C99.

Table 6. Keywords for C++ language extensions related to C99
restrict
_Pragma
End of C++ only

More detailed information regarding the compilation contexts in which extension keywords are valid is provided in the sections of this document that describe each keyword.

End of IBM extension

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