Conjugate gradient minimization of nonlinear functions with box constraints incorporating the Dai/Yuan update. This implementation should be used in place of the "CG" algorithm of the optim() function.
Changes in Rcgmin
Changes before 2012-4-30 not recorded
TODOS o Eventually include different line searches, possibly in a separate routine
o As per CRAN policies, edited DESCRIPTION and NAMESPACE file. Because there is no change to code, the date of the package advanced by only 1 day.
o Removed require() from code. Not needed.
o Removed fail, setstep (not used), ceps from Rcgminu (not used)
o Minor edits and addition of references.
o User-tolerance for gradient size.
2012-5-21 o Separation of constrained and unconstrained versions.