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HS22.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME HS22
* Problem :
* *********
* Source: problem 22 in
* W. Hock and K. Schittkowski,
* "Test examples for nonlinear programming codes",
* Lectures Notes in Economics and Mathematical Systems 187, Springer
* Verlag, Heidelberg, 1981.
* SIF input: A.R. Conn, April 1990
* classification QQR2-AN-2-2
VARIABLES
X1
X2
GROUPS
N OBJ
G CON1 X1 -1.0 X2 -1.0
G CON2 X2 1.0
CONSTANTS
HS22 CON1 -2.0
BOUNDS
FR HS22 'DEFAULT'
START POINT
HS22 X1 2.0
HS22 X2 2.0
ELEMENT TYPE
EV SQ V1
EV SQ-2 V1
EV SQ-1 V1
ELEMENT USES
T E1 SQ-2
V E1 V1 X1
T E2 SQ-1
V E2 V1 X2
T E3 SQ
V E3 V1 X1
GROUP USES
E OBJ E1 E2
E CON2 E3 -1.0
OBJECT BOUND
LO HS22 0.0
* Solution
*LO SOLTN 1.0
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS HS22
TEMPORARIES
R V1M2
R V1M1
INDIVIDUALS
T SQ-2
A V1M2 V1 - 2.0
F V1M2**2
G V1 2.0 * V1M2
H V1 V1 2.0
T SQ-1
A V1M1 V1 - 1.0
F V1M1**2
G V1 2.0 * V1M1
H V1 V1 2.0
T SQ
F V1 * V1
G V1 V1 + V1
H V1 V1 2.0
ENDATA