active.f File Reference

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Functions/Subroutines
subroutine	active (n, l, u, nbd, x, iwhere, iprint, prjctd, cnstnd, boxed)
	This subroutine initializes iwhere and projects the initial x to the feasible set if necessary. More...

Function/Subroutine Documentation

active()

subroutine active	(	integer	n,
		double precision, dimension(n)	l,
		double precision, dimension(n)	u,
		integer, dimension(n)	nbd,
		double precision, dimension(n)	x,
		integer, dimension(n)	iwhere,
		integer	iprint,
		logical	prjctd,
		logical	cnstnd,
		logical	boxed
	)

This subroutine initializes iwhere and projects the initial x to the feasible set if necessary.

Parameters

n	number of parameters
l	lower bounds on parameters
u	upper bounds on parameters
nbd	indicates which bounds are present
x	position
iwhere	On entry iwhere is unspecified. On exit: iwhere(i)= -1 if x(i) has no bounds 3 if l(i)=u(i), 0 otherwise. In cauchy, iwhere is given finer gradations.
iprint	console output flag
prjctd	On exit .true. if any input x(i) had to be clipped onto its bound (the user supplied an infeasible starting point).
cnstnd	On exit .true. if any variable has at least one bound (any nbd(i) /= 0); .false. for purely unconstrained problems.
boxed	On exit .true. iff every variable has both lower and upper bounds (every nbd(i) == 2); .false. otherwise.

Definition at line 35 of file active.f.

Referenced by mainlb().

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