NAME
    hash - return the calc hash value

SYNOPSIS
    hash(x_1 [, x_2, x_3, ...])

TYPES
    x_1, x_1, ...	any

    return		integer v, 0 <= v < 2^32

DESCRIPTION
    Returns a hash value for one or more values of arbitrary types.

    The calc hash value is based on the core Fowler/Noll/Vo hash
    known as FNV-0.  The return value, however, cannot be used
    as an FNV hash value because calc's internal function also
    takes into account more abstract concepts such as data types.

    WARNING: Use of FNV-0 is NOT recommended for general purposes.
    	     Calc uses FNV-0 for internal objects such as associative
	     arrays as well as other internal processes.  Calc
	     maintains the use of FNV-0 for backwards compatibility.

	     You should use the FNV-1a hash instead!!!!!

    Use the fnv() builtin function for general quick, non-cryptographic
    hash purposes.

    See also:

	 http://www.isthe.com/chongo/tech/comp/fnv/

    information about the Fowler/Noll/Vo (FNV) hash.

EXAMPLE
    ; a = isqrt(2e1000); s = "xyz";
    ; hash(a,s)
	    2378490456

LIMITS
    The number of arguments is not to exceed 1024.

LINK LIBRARY
    none

SEE ALSO
    ishash, fnv, sha1

## Copyright (C) 1999-2007,2014  Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL.  You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
##
## @(#) $Revision: 30.3 $
## @(#) $Id: hash,v 30.3 2014/10/06 08:45:56 chongo Exp $
## @(#) $Source: /usr/local/src/bin/calc/help/RCS/hash,v $
##
## Under source code control:	1996/03/12 23:10:01
## File existed as early as:	1996
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
