NAN(3)

NAME
1.42 `nan', `nanf'--representation of "Not a Number"

SYNOPSIS
     #include <math.h>
     double nan(const char *);
     float nanf(const char *);

DESCRIPTION
`nan' and `nanf' return an IEEE NaN (Not a Number) in double- and single-precision arithmetic respectively. The argument is currently disregarded.

SEE ALSO
nan is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.