NAME
    ishash - whether a value is a hash state

SYNOPSIS
    ishash(x)

TYPES
    x		any, &any

    return	int

DESCRIPTION
    Determine if x is a hash state.  This function will return 1 if x is
    a file, 0 otherwise.

EXAMPLE
    > a = shs(0)
    > print ishash(a), ishash(0);
    1 0

LIMITS
    none

LIBRARY
    none

SEE ALSO
    XXX - fill in