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What does "# if_LFS64_LARGEFILE-0" mean for CPP?

What does it mean #if _LFS64_LARGEFILE-0

for the C preprocessor for g ++? Is it the minus zero or is this part of the character? If it's minus zero, how does this affect triggering #if

?

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1 answer


This is a more reliable version:

#if _LFS64_LARGEFILE


i.e. that the code must be conditionally included if it _LFS64_LARGEFILE

is true.

The addition - 0

prevents warning ( #if with no expression

) from being received if _LFS64_LARGEFILE

not defined.

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