UGR − CUTEr tool to evaluate gradient. |
CALL UGR( N, X, G ) |
The UGR subroutine evaluates the gradient of the objective function of the problem decoded into OUTSDIF.d at the point X, in the case where the only possible constraints are bound constraints. |
The arguments of UGR are as follows |
N [in] - integer |
the number of variables for the problem, |
X [in] - real/double precision |
an array which gives the current estimate of the solution of the problem, |
G [out] - real/double precision |
an array which gives the value of the gradient of the objective function evaluated at X. |
I. Bongartz, A.R. Conn, N.I.M. Gould, D. Orban and Ph.L. Toint |
CUTEr (and SifDec): A Constrained and Unconstrained Testing Environment, revisited, N.I.M. Gould, D. Orban and Ph.L. Toint, ACM TOMS, 29:4, pp.373-394, 2003. CUTE: Constrained and Unconstrained Testing Environment, I. Bongartz, A.R. Conn, N.I.M. Gould and Ph.L. Toint, TOMS, 21:1, pp.123-160, 1995. cgr(3M). |