nextprime

来自「Calc Software Package for Number Calc」· 代码 · 共 64 行

NAME
    nextprime - nearest prime greater than specified number

SYNOPSIS
    nextprime(n [,err])

TYPES
    n		real
    err		integer

    return	positive integer or err

DESCRIPTION
    If n is an integer less than 2^32, nextprime(n) returns the
    first prime greater than n.

    If n >= 2^32 or n is fractional, nextprime(n, err) returns the value
    of err.

    Other cases cause a runtime error.

EXAMPLE
    ; print nextprime(10), nextprime(100), nextprime(1e6)
    11 101 1000003

    ; print nextprime(3/2,-99), nextprime(2^32-1,-99), nextprime(2^32,-99)
    -99 4294967311 -99

LIMITS
    n <= 2^32

LINK LIBRARY
    FULL znprime(ZVALUE z)

SEE ALSO
    factor, isprime, lfactor, nextcand, prevcand, prevprime,
    pfact, pix, ptest

## 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.
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## 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
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## 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
##
## @(#) $Revision: 29.4 $
## @(#) $Id: nextprime,v 29.4 2006/06/25 22:16:55 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/nextprime,v $
##
## Under source code control:	1995/12/18 12:34:57
## 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/