mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
54 lines
1.6 KiB
Plaintext
54 lines
1.6 KiB
Plaintext
NAME
|
|
pfact - product of primes up to specified integer
|
|
|
|
SYNOPSIS
|
|
pfact(n)
|
|
|
|
TYPES
|
|
n nonnegative integer
|
|
|
|
return positive integer
|
|
|
|
DESCRIPTION
|
|
Returns the product of primes p_i for which p_i <= n.
|
|
|
|
EXAMPLE
|
|
> for (i = 0; i <= 16; i++) print pfact(i),:;
|
|
1 1 2 6 6 30 30 210 210 210 210 2310 2310 30030 30030 30030 30030
|
|
|
|
LIMITS
|
|
n < 2^24
|
|
|
|
LINK LIBRARY
|
|
NUMBER *qpfact(NUMBER *n)
|
|
void zpfact(ZVALUE z, ZVALUE *dest)
|
|
|
|
SEE ALSO
|
|
fact, lcmfact
|
|
|
|
## Copyright (C) 1999 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.
|
|
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
|
|
##
|
|
## @(#) $Revision: 29.1 $
|
|
## @(#) $Id: pfact,v 29.1 1999/12/14 09:16:02 chongo Exp $
|
|
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/pfact,v $
|
|
##
|
|
## Under source code control: 1995/12/18 12:34:57
|
|
## File existed as early as: 1995
|
|
##
|
|
## chongo <was here> /\oo/\ http://reality.sgi.com/chongo/
|
|
## Share and enjoy! :-) http://reality.sgi.com/chongo/tech/comp/calc/
|