> Another way to do it is to grep sqrt * in /usr/include if your function
> doesn't have a man page. (Does EVERY function in /usr/include have
> one??)
I'll add to this a recommendation for the O'Reilly "Posix
Programmer's Guide". If you want to write code that has a chance of
being portable, I strongly recommend that you use a book like this to
find out what the "official" header file is for a function and what
functions must be declared in specific header files to be considered
POSIX compliant. This book saved me from big headaches on MANY
ocassions...
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