[R] NA in C/C++

cstrato@EUnet.at cstrato at EUnet.at
Sun May 28 18:19:16 CEST 2000


Dear R-people

Sorry for asking a question only indirectly related to S/R but since
data containing NA values
can so easily be handled in S/R, and you can write functions for S/R in
C, my question is:
How do you handle data containing NA in C/C++ ?

Although I know that IEEE floating point arithmetics supports NaN and
Inf, I cannot find
any information about this (e.g. in any of my many C++ books)

Thank you in advance for your help
Christian Stratowa, Vienna


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