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CB3.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME CB3
* Problem :
* *********
* A nonlinear minmax problem.
* Source:
* R. Wommersley and R. Fletcher,
* "An algorithm for composite nonsmooth optimization problems"
* JOTA, vol.48, pp.493-523, 1986
* SIF input: Ph. Toint, April 1992.
* classification LOR2-AN-3-3
VARIABLES
X1
X2
U
GROUPS
XN OBJ U 1.0
XG C1 U 1.0
XG C2 U 1.0
XG C3 U 1.0
BOUNDS
FR CB3 'DEFAULT'
START POINT
XV CB3 X1 2.0
XV CB3 X2 2.0
XV CB3 U 1.0
ELEMENT TYPE
EV SQ X
EV FR X
EV SSQ X
EV EXY X Y
ELEMENT USES
T X2SQ SQ
ZV X2SQ X X2
T X1FR FR
ZV X1FR X X1
T SSQ1 SSQ
ZV SSQ1 X X1
T SSQ2 SSQ
ZV SSQ2 X X2
T EEX EXY
ZV EEX X X1
ZV EEX Y X2
GROUP USES
E C1 X1FR - 1.0 X2SQ - 1.0
E C2 SSQ1 - 1.0 SSQ2 - 1.0
E C3 EEX - 2.0
OBJECT BOUND
* Solution
*LO SOLTN 0.0
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS CB3
TEMPORARIES
R EE
M EXP
INDIVIDUALS
T SQ
F X * X
G X X + X
H X X 2.0
T FR
F X**4
G X 4.0 * X**3
H X X 12.0 * X**2
T SSQ
F ( 2.0 - X )**2
G X - 2.0 * ( 2.0 - X )
H X X 2.0
T EXY
A EE EXP( Y - X )
F EE
G X - EE
G Y EE
H X X EE
H X Y - EE
H Y Y EE
ENDATA