26.14 Pre-Processing Directives

ISO Standard:	“How sequences in both forms of header names are mapped to headers or external source file names (C90 6.1.7, C99 6.4.7).”
Implementation:	The character sequence between the delimiters is considered to be a string which is a file name for the host environment.
ISO Standard:	“Whether the value of a character constant in a constant expression that controls conditional inclusion matches the value of the same character constant in the execution character set (C90 6.8.1, C99 6.10.1).”
Implementation:	Yes.
ISO Standard:	“Whether the value of a single-character `character` constant in a constant expression that controls conditional inclusion may have a negative value (C90 6.8.1, C99 6.10.1).”
Implementation:	Yes.
ISO Standard:	“The places that are searched for an included `< >` delimited header, and how the places are specified or the header is identified (C90 6.8.2, C99 6.10.2).”
Implementation:	`<install directory>/lib/gcc/pic32mx/3.4.4/include` `<install directory>/pic32mx/include`
ISO Standard:	“How the named source file is searched for in an included `""` delimited header (C90 6.8.2, C99 6.10.2).”
Implementation:	The compiler first searches for the named file in the directory containing the including file, the directories specified by the `-iquote` command line option (if any), then the directories which are searched for a `< >` delimited header.
ISO Standard:	“The method by which preprocessing tokens are combined into a header name (C90 6.8.2, C99 6.10.2).”
Implementation:	All tokens, including whitespace, are considered part of the header file name. Macro expansion is not performed on tokens inside the delimiters.
ISO Standard:	“The nesting limit for `#include` processing (C90 6.8.2, C99 6.10.2).”
Implementation:	No limit.
ISO Standard:	“The behavior on each recognized non-`STDC #pragma` directive (C90 6.8.6, C99 6.10.6).”
Implementation:	See 9.11 Variable Attributes.
ISO Standard:	“The definitions for `__DATE_ _` and `__TIME_ _` when respectively, the date and time of translation are not available (C90 6.8.8, C99 6.10.8).”
Implementation:	The date and time of translation are always available.

ISO Standard:

“How sequences in both forms of header names are mapped to headers or external source file names (C90 6.1.7, C99 6.4.7).”

Implementation:

The character sequence between the delimiters is considered to be a string which is a file name for the host environment.

ISO Standard:

“Whether the value of a character constant in a constant expression that controls conditional inclusion matches the value of the same character constant in the execution character set (C90 6.8.1, C99 6.10.1).”

Implementation:

Yes.

ISO Standard:

“Whether the value of a single-character character constant in a constant expression that controls conditional inclusion may have a negative value (C90 6.8.1, C99 6.10.1).”

Implementation:

Yes.

ISO Standard:

“The places that are searched for an included < > delimited header, and how the places are specified or the header is identified (C90 6.8.2, C99 6.10.2).”

Implementation:

<install
                            directory>/lib/gcc/pic32mx/3.4.4/include

<install directory>/pic32mx/include

ISO Standard:

“How the named source file is searched for in an included "" delimited header (C90 6.8.2, C99 6.10.2).”

Implementation:

The compiler first searches for the named file in the directory containing the including file, the directories specified by the -iquote command line option (if any), then the directories which are searched for a < > delimited header.

ISO Standard:

“The method by which preprocessing tokens are combined into a header name (C90 6.8.2, C99 6.10.2).”

Implementation:

All tokens, including whitespace, are considered part of the header file name. Macro expansion is not performed on tokens inside the delimiters.

ISO Standard:

“The nesting limit for #include processing (C90 6.8.2, C99 6.10.2).”

Implementation:

No limit.

ISO Standard:

“The behavior on each recognized non-STDC #pragma directive (C90 6.8.6, C99 6.10.6).”

Implementation:

See 9.11 Variable Attributes.

ISO Standard:

“The definitions for __DATE_ _ and

__TIME_
                                _

when respectively, the date and time of translation are not available (C90 6.8.8, C99 6.10.8).”

Implementation:

The date and time of translation are always available.