Many thanks for this information!
I'm pretty sure Matlab can handle complex argument in besselj,
although i haven't checked myself,
< http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/
access/helpdesk/help/techdoc/ref/besselj.html >
After some more thinking, it turns out my cod
Hello Baptiste
Bessel functions with complex arguments
are not supported in R.
Neither matlab nor the Gnu Scientific Library support them either.
. . . but . . .
the pari/gp system (released on the GPL) does:
? besselj(1+I,3)
%3 = 0.6919067491368555819808728680 + 0.4484268613977010268818252
Dear R users,
I'm porting a piece of Matlab code to R, but I'm now stuck with the
following: I need an equivalent of besselJ(x, nu) that can handle a
complex argument x. I couldn't find any R implementation. I did find
a possible fortran solution in SLATEC (< http://www.netlib.org/slatec/
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