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NEWS | R Documentation |
The exponential rescaling for the asymptotic version of the
I()
function has been changed (for non-real
complex arguments) to be compatible to the scaling for
BesselI()
.
deprecate bI()
to use besselIs()
instead –
enable log = TRUE
option and test it.
new besselJs()
, i.e., Taylor series for J_n(x)
;
using lssum()
for alternating exp/log sum, also works with
Rmpfr's mpfr()
high precision numbers.
use C routine registration, adding safety and a bit of speed.
improved documentation for Bessel functions Ai,Bi, H, I,J,K,Y.
besselI.nuAsym()
and besselK.nuAsym()
now allow maximal
k.max = 5
(instead of 4
).
new besselKasym()
(9.7.2 of A.&S. p.378).
All the TOMS 644 routines get an optional argument
verbose
indicating the verbosity level of output notably from
C code. The output itself may change and is not part of the API.
fix BesselI(<cmplx>, nu < 0, expo..=TRUE)
bug thanks
to Hiroyuki Kawakatsu.
better warning message (r29).
the TOMS 644 routines Bessel[HIYJK] and Airy[AB] now all
return NaN
with a warning instead of stopping with an error
in case of low level error ierr == 4
.
BesselK(0,*)
is zero now, and BesselH(m,
z=0,..)
returns Inf/NaN combinations.
Both no longer end with an error (from ierr == 1
).
BesselK(<negative>, 3)
and BesselJ(*)
now also
return the correct imaginary part instead of just a numeric value.
besselIs(z, nu)
now also works for complex
z
.
Adapt to new standard: move vignettes to own ‘vignettes/’ directory.
Improved vignette
BesselY(0, nu)
should not give an error message
from zbesy()
, but either -Inf (real 0) or something like
"Inf + NaN i"
.
Cosmetic, mainly for R CMD check
besselI.nuAsym()
and besselK.nuAsym()
asymptotic versions for large nu
and/or x
See the ‘ChangeLog’ file in the sources.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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