1! 2! CalculiX - A 3-dimensional finite element program 3! Copyright (C) 1998-2021 Guido Dhondt 4! 5! This program is free software; you can redistribute it and/or 6! modify it under the terms of the GNU General Public License as 7! published by the Free Software Foundation(version 2); 8! 9! 10! This program is distributed in the hope that it will be useful, 11! but WITHOUT ANY WARRANTY; without even the implied warranty of 12! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13! GNU General Public License for more details. 14! 15! You should have received a copy of the GNU General Public License 16! along with this program; if not, write to the Free Software 17! Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18! 19! S.W. Sloan, Adv.Eng.Software,1987,9(1),34-55. 20! Permission for use with the GPL license granted by Prof. Scott 21! Sloan on 17. Nov. 2013 22! 23 subroutine push(item,maxstk,topstk,stack) 24! 25 implicit none 26! 27 integer topstk,maxstk,stack(*),item 28! 29 topstk=topstk+1 30 if(topstk.gt.maxstk) then 31 write(6,'("0***error in subroutine push***")') 32 write(6,'("***stack overflow***")') 33 call exit(201) 34 else 35 stack(topstk)=item 36 endif 37 end 38