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HATFLDA.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME HATFLDA
* Problem :
* *********
* A test problem from the OPTIMA user manual.
* Source:
* "The OPTIMA user manual (issue No.8, p. 12)",
* Numerical Optimization Centre, Hatfield Polytechnic (UK), 1989.
* SIF input: Ph. Toint, May 1990.
* classification SBR2-AN-4-0
* Number of variables
IE N 4
* Constants
IE 1 1
IE 2 2
VARIABLES
DO I 1 N
X X(I)
ND
GROUPS
XN G(1) X(1) 1.0
DO I 2 N
IA I-1 I -1
XN G(I) X(I-1) 1.0
ND
CONSTANTS
HATFLDA G1 1.0
BOUNDS
XL HATFLDA 'DEFAULT' 0.0000001
START POINT
XV HATFLDA 'DEFAULT' 0.1
ELEMENT TYPE
EV SQR X
ELEMENT USES
XT 'DEFAULT' SQR
DO I 2 N
ZV E(I) X X(I)
ND
GROUP TYPE
GV L2 GVAR
GROUP USES
XT 'DEFAULT' L2
DO I 2 N
XE G(I) E(I) -1.0
ND
OBJECT BOUND
LO HATFLDA 0.0
* Solution
*LO SOLTN 0.0
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS HATFLDA
TEMPORARIES
R ROOT
M SQRT
INDIVIDUALS
T SQR
A ROOT SQRT( X )
F ROOT
G X 0.5 / ROOT
H X X -0.25 / ( ROOT * X )
ENDATA
*********************
* SET UP THE GROUPS *
* ROUTINE *
*********************
GROUPS HATFLDA
INDIVIDUALS
T L2
F GVAR * GVAR
G GVAR + GVAR
H 2.0
ENDATA