Request for help from matlab spline toolbox user

[David Bateman]

Can someone who has the matlab spline toolbox installed tell me what

x = linspace(0,2*pi,15)'; y = sin(x);
ppval(csape(x,[y,y]),x)
[ppval(csape(x,y),x),ppval(csape(x,y),x)]

returns. I'm trying to fix an error in the spline toolbox in 
octave-forge's csape function's test code due to recent changes in 
ppval, but would like to check particularly the orientation of the 
output of the above to see what is the appropriate fix....

D.