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HATFLDH.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME HATFLDH
* Problem :
* *********
* A test problem from the OPTIMA user manual.
* This is a nonlinear objective with
* linear constraints.
* Source:
* "The OPTIMA user manual (issue No.8, p. 91)",
* Numerical Optimization Centre, Hatfield Polytechnic (UK), 1989.
* SIF input: Ph. Toint, May 1990.
* classification QLR2-AN-4-7
VARIABLES
X1
X2
X3
X4
GROUPS
N OBJ
G C1 X1 1.0 X2 1.0
G C2 X1 1.0 X3 1.0
G C3 X1 1.0 X4 1.0
G C4 X2 1.0 X3 1.0
G C5 X2 1.0 X4 1.0
G C6 X3 1.0 X4 1.0
G C7 X1 1.0 X2 1.0
G C7 X3 1.0 X4 1.0
CONSTANTS
HATFLDH C1 2.5
HATFLDH C2 2.5
HATFLDH C3 2.5
HATFLDH C4 2.0
HATFLDH C5 2.0
HATFLDH C6 1.5
HATFLDH C7 5.0
RANGES
HATFLDH C1 5.0
HATFLDH C2 5.0
HATFLDH C3 5.0
HATFLDH C4 5.0
HATFLDH C5 5.0
HATFLDH C6 5.0
BOUNDS
XU HATFLDH 'DEFAULT' 5.0
START POINT
HATFLDH X1 1.0
HATFLDH X2 5.0
HATFLDH X3 5.0
HATFLDH X4 1.0
ELEMENT TYPE
EV 2PR X Y
ELEMENT USES
T A1 2PR
V A1 X X1
V A1 Y X3
T A2 2PR
V A2 X X2
V A2 Y X4
GROUP USES
E OBJ A1 -1.0 A2 -1.0
OBJECT BOUND
* Solution
*LO SOLTN -24.4999998
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS HATFLDH
INDIVIDUALS
T 2PR
F X * Y
G X Y
G Y X
H X Y 1.0
ENDATA