76 lines
2.3 KiB
Fortran
76 lines
2.3 KiB
Fortran
/*BHEADER**********************************************************************
|
|
* Copyright (c) 2008, Lawrence Livermore National Security, LLC.
|
|
* Produced at the Lawrence Livermore National Laboratory.
|
|
* This file is part of HYPRE. See file COPYRIGHT for details.
|
|
*
|
|
* HYPRE is free software; you can redistribute it and/or modify it under the
|
|
* terms of the GNU Lesser General Public License (as published by the Free
|
|
* Software Foundation) version 2.1 dated February 1999.
|
|
*
|
|
* $Revision$
|
|
***********************************************************************EHEADER*/
|
|
|
|
|
|
|
|
|
|
|
|
subroutine equate(m, n,
|
|
& matrix_old, matrix_new)
|
|
c
|
|
c -----------------------------------------------------------------------
|
|
c This is an example of a F77 code illustrating the indentation used
|
|
c for CASC codes. This code does not illustrate issues related to
|
|
c documentation or error handling.
|
|
c
|
|
c The most important item here is consistent indentation of the following
|
|
c structures:
|
|
c - do loops
|
|
c - if-then-else-endif statements
|
|
c - do-while statements
|
|
c In each of the above, we recommend indentation by 3 spaces - 2 is sometimes
|
|
c difficult to detect, and 4 can be too much in deeply nested statements.
|
|
c
|
|
c The following are left to the discretion of a project. The only constraint
|
|
c is that the standard be applied consistently to all F77/F90 codes within
|
|
c a project.
|
|
c - upper/lower case for codes
|
|
c - upper/lower/mixed case for comments
|
|
c - whether a code has blank lines or blank comments (a line with
|
|
c c in the first column)
|
|
c - where blank lines should be added to improve the modularity of the
|
|
c code
|
|
c
|
|
c Note that this code does something nonsensical - it is mainly for the
|
|
c illustration of indentation.
|
|
c
|
|
c -----------------------------------------------------------------------
|
|
c
|
|
|
|
implicit none
|
|
|
|
integer m, n
|
|
integer i, j
|
|
|
|
real*8 matrix_new(m,n), matrix_old(m,n)
|
|
|
|
if (m .gt. n) then
|
|
c
|
|
do j = 1, n
|
|
do i = 1, m
|
|
matrix_new(i,j) = matrix_old(i,j)
|
|
end do
|
|
end do
|
|
c
|
|
else
|
|
c
|
|
do j = 1, n
|
|
do i = 1, m
|
|
matrix_new(i,j) = - matrix_old(i,j)
|
|
end do
|
|
end do
|
|
c
|
|
end if
|
|
|
|
return
|
|
end
|