hi all,

In Stevens' UNIX Network Programming Vol 2 Second Edition,
it says "Most implementations define the six constants
MSG_R, MSG_W, .....  But these are not required by Unix 98."
on page 33.

it seems to me that linux 2.2.x + glibc 2.1.1pre1 doesn't have 
those value difined in any of header files.

should i just use numeric values or am i missing something?
--
              yashi

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