NAME
    fib - Fibonacci number

SYNOPSIS
    fib(n)

TYPES
    n           integer

    return      integer

DESCRIPTION
    For any integer n, fib(n) returns the Fibonacci number with index n.
    This may be defined by fib(0) = 0, fib(1) = 1 and for any n (positive
    or negative) fib(n) = fib(n-1) + fib(n-2).

EXAMPLE
    ; print fib(-2), fib(-1), fib(0), fib(1), fib(2), fib(3), fib(4), fib(5)
    -1 1 0 1 1 2 3 5 -8

LIMITS
    none

LINK LIBRARY
    NUMBER *qfib(NUMBER *n)

SEE ALSO
    fact

## Copyright (C) 1999-2006  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.
##
## Under source code control:   1995/10/25 04:03:45
## File existed as early as:    1995
##
## chongo <was here> /\oo/\     http://www.isthe.com/chongo/
## Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/
