HS21.SIF

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* SET UP THE INITIAL DATA *
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NAME          HS21

*   Problem :
*   *********

*   Source: problem 21 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 QLR2-AN-2-1

VARIABLES

    X1
    X2

GROUPS

 N  OBJ

 G  CON1      X1        10.0           X2        -1.0

CONSTANTS

    HS21      OBJ       100.0
    HS21      CON1      10.0

BOUNDS

 LO HS21      X1        2.0
 UP HS21      X1        50.0
 LO HS21      X2        -50.0
 UP HS21      X2        50.0

START POINT

    HS21      X1        -1.0
    HS21      X2        -1.0

ELEMENT TYPE

 EV SQ        V1

ELEMENT USES

 XT 'DEFAULT' SQ

 V  E1        V1                       X1
 V  E2        V1                       X2

GROUP USES

 E  OBJ       E1        0.01           E2

OBJECT BOUND

 LO HS21                -100.0

*   Solution

*LO SOLTN               -99.96

ENDATA

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* SET UP THE FUNCTION *
* AND RANGE ROUTINES  *
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ELEMENTS      HS21

INDIVIDUALS

 T  SQ
 F                      V1 * V1
 G  V1                  V1 + V1
 H  V1        V1        2.0

ENDATA