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C Copyright (c) 2003-2010 University of Florida
C
C This program is free software; you can redistribute it and/or modify
C it under the terms of the GNU General Public License as published by
C the Free Software Foundation; either version 2 of the License, or
C (at your option) any later version.
C This program is distributed in the hope that it will be useful,
C but WITHOUT ANY WARRANTY; without even the implied warranty of
C MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
C GNU General Public License for more details.
C The GNU General Public License is included in this distribution
C in the file COPYRIGHT.
SUBROUTINE IDNMAT(A,N,NTIME)
C
C SUBROUTINE RETURNS THE N X N IDENTITY MATRIX. NTIME UTILITY IS
C USED IN SYMUNQ.
C
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
double precision a(*)
if (n.eq.3) then
a(1) = 1.d0
a(2) = 0.d0
a(3) = 0.d0
a(4) = 0.d0
a(5) = 1.d0
a(6) = 0.d0
a(7) = 0.d0
a(8) = 0.d0
a(9) = 1.d0
else
do i = 1, n*n
a(i) = 0.d0
end do
ndx = 1
do i = 1, n
a(ndx) = 1.d0
ndx = ndx + n + 1
end do
end if
NTIME=NTIME+1
RETURN
END
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