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ROSENBR.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME ROSENBR
* Problem :
* *********
* The ever famous 2 variables Rosenbrock "banana valley" problem
* Source: problem 1 in
* J.J. More', B.S. Garbow and K.E. Hillstrom,
* "Testing Unconstrained Optimization Software",
* ACM Transactions on Mathematical Software, vol. 7(1), pp. 17-41, 1981.
* SIF input: Ph. Toint, Dec 1989.
* classification SUR2-AN-2-0
VARIABLES
X1
X2
GROUPS
N G1 X2 1.0
N G1 'SCALE' 0.01
N G2 X1 1.0
CONSTANTS
ROSENBR G2 1.0
BOUNDS
FR ROSENBR 'DEFAULT'
START POINT
ROSENBR X1 -1.2
ROSENBR X2 1.0
ELEMENT TYPE
EV SQ V1
ELEMENT USES
T E1 SQ
V E1 V1 X1
GROUP TYPE
GV L2 GVAR
GROUP USES
T 'DEFAULT' L2
XE G1 E1 -1.0
OBJECT BOUND
LO ROSENBR 0.0
* Solution
*LO SOLTN 0.0
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS ROSENBR
INDIVIDUALS
T SQ
F V1 * V1
G V1 V1 + V1
H V1 V1 2.0
ENDATA
*********************
* SET UP THE GROUPS *
* ROUTINE *
*********************
GROUPS ROSENBR
INDIVIDUALS
T L2
F GVAR * GVAR
G GVAR + GVAR
H 2.0
ENDATA