constant

Look up a POSIX constant by name.

Synopsis

my $enoent = POSIX::constant("ENOENT");

What you get back

The integer or floating-point value of the named constant, or undef if the name is not known.

Differences from upstream

Fully compatible with upstream POSIX. Ordinary code should import the constant by name rather than going through this accessor — it exists mainly for tooling and introspection.