The
infnan()
function returns a suitable value for infinity and
"not-a-number" (NaN) results.
The value of error can be
ERANGE
to represent infinity or anything else to represent NaN.
errno
is also set.
RETURN VALUE
If error is
ERANGE
(Infinity),
HUGE_VAL
is returned.
If error is -ERANGE (-Infinity), -HUGE_VAL is returned.
If error is anything else, NAN is returned.
ERRORS
EDOM
The value of error is "not-a-number" (NaN).
ERANGE
The value of error is positive infinity or negative infinity.
CONFORMING TO
4.3BSD.
NOTES
This obsolete function was provided in
libc4 and libc5, but is not available in glibc2.
COLOPHON
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
