bp_obj.m

来自「％ Atomizer Main Directory, Version .802 」· M 代码 · 共 20 行

function [obj,grad,hess] = BP_obj( x )
%        [obj,grad,hess] = BP_obj( x )
%    computes the objective value, gradient and diagonal Hessian
%    of the linear function e'x, where e is a vector of 1s.
%    For use with BP_Interior2.m (which uses pdsco.m).

%-----------------------------------------------------------------------
% 20 Feb 2001: First version of BP_obj.
%              Michael Saunders, SOL, Stanford University.
%-----------------------------------------------------------------------

n    = length(x);
obj  = sum(x);
grad = ones(n,1);
hess = zeros(n,1);

%-----------------------------------------------------------------------
% End function BP_obj
%-----------------------------------------------------------------------