Bessel functions of the first kind
besselj
Scilab besselj function can work with only one output argument, but the Matlab function can work with two outputs arguments.
y = besselj(alpha,x) y = besselj(alpha,x,1) [y,ierr] = besselj(alpha,...)
y = besselj(alpha,x) y = besselj(alpha,x,ice),ice = 1 or ice = 2