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Sun Studio 12: C User's Guide
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Appendix E Implementation-Defined ISO/IEC C90 Behavior
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E.1 Implementation Compared to the ISO Standard
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E.1.13 Preprocessing Directives (G.3.13)
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E.1.13.1 (6.8.1) Whether the value of a single-character character constant in a constant expression that controls conditional inclusion matches the value of the same character constant in the execution character set:
> (6.8.8) The definitions for __DATE__ and __TIME__ when, respectively, the date and time of translation are not available:
Sun Studio 12: C User's Guide
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(6.8.8) The definitions for
__DATE__
and
__TIME__
when, respectively, the date and time of translation are not available:
These macros are always available from the environment.
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