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QPBAND.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME QPBAND
* Problem :
* *********
* A banded QP
* SIF input: Nick Gould, December 1999.
* classification QLR2-AN-V-V
*IE N 10000 $-PARAMETER
IE N 50000 $-PARAMETER
*IE N 100000 $-PARAMETER
*IE N 200000 $-PARAMETER
*IE N 400000 $-PARAMETER
*IE N 500000 $-PARAMETER
IE 1 1
IE 2 2
RI RN N
RE ONE 1.0
I/ M N 2
I- N-1 N 1
VARIABLES
DO I 1 N
X X(I )
ND
GROUPS
DO I 1 N
RI RI I
R/ RI/RN RI RN
RM -RI/RN RI/RN -1.0
ZN OBJ X(I ) -RI/RN
ND
DO I 1 M
I+ M+I M I
XG C(I) X(I) 1.0 X(M+I) 1.0
ND
CONSTANTS
DO I 1 M
X QPBAND C(I) 1.0
ND
BOUNDS
LO QPBAND 'DEFAULT' 0.0
UP QPBAND 'DEFAULT' 2.0
*START POINT
* QPBAND 'DEFAULT' 1.0
QUADRATIC
DO I 1 N-1
I+ I+1 I 1
X X(I ) X(I) 2.0 X(I+1) -1.0
ND
X X(N ) X(N) 2.0
ENDATA