pqpnonneg.m File Reference

Functions
return endif	if (!(nargin >=2 &&nargin<=4 &&ismatrix(c)&&ismatrix(d)&&isstruct(options))) print_usage()
	if (m!=n) error("matrix must be square")
endif	if (isempty(x)) x
	while (iter< max_iter) while(iter< max_iter) iter++
	if (usechol) xtmp
if(isempty(idx)) x(	x (p)
	xx (p)
	p (idx)
	w (p)
	if (!any(w > 0)) if(usechol) usechol
Variables
	function [x, minval, exitflag, output, lambda]
endif	m = rows (c)
	n = columns (c)
else	x = max (x, 0)
endif	max_iter = optimget (options, "MaxIter", 1e5)
	p = find (x > 0).'
	r = chol (c(p, p))
	usechol = true
	iter = 0
else	xtmp = -(c(p,p) \ d(p))
endif	idx = find (xtmp < 0)
	break
else	pidx = p(idx)
	sf = x(pidx)./(x(pidx) - xtmp(idx))
	alpha = min (sf)
	xx = zeros (n, 1)
endif endif endwhile	w = -(d + c*x)
	continue

---

Function Documentation

if

(

!

anyw > 0

)

if

(

usechol

)

endif if

(

isempty(x)

)

if

(

m!

= n

)

return endif if

(

!

nargin >=2 &&nargin<=4 &&ismatrix(c)&&ismatrix(d)&&isstruct(options)

)

p

(

idx

)

w

(

p

)

while

(

)

if (isempty (idx)) x( x

(

p

)

xx

(

p

)

---

Variable Documentation

alpha = min (sf)

else break

continue

function[x, minval, exitflag, output, lambda]

Initial value:

 pqpnonneg (c, d, x = [], options = struct ())

  if (nargin == 1 && ischar (c) && strcmp (c, 'defaults'))
    x = optimset ("MaxIter", 1e5)

endif endif idx = find (xtmp < 0)

iter = 0

endif m = rows (c)

endif max_iter = optimget (options, "MaxIter", 1e5)

n = columns (c)

p = find (x > 0).'

else pidx = p(idx)

r = chol (c(p, p))

sf = x(pidx)./(x(pidx) - xtmp(idx))

usechol = true

endif endif endwhile w = -(d + c*x)

else x = max (x, 0)

else xtmp = -(c(p,p) \ d(p))

xx = zeros (n, 1)