similar to: besselK- complex number problem any help is welcome

Displaying 20 results from an estimated 400 matches similar to: "besselK- complex number problem any help is welcome"

2007 Jun 14
1
besselK
Assistance, besselK- complex number problem Im a student intrested in using R in my learning and research work in option pricing however i have a problem with besselK function In R. Would you assit me in computing the besselK of third kind of a complex number in R. Any code or suggestion will be highly appriceiated eg besselK(2,10) works well.. but besselK(2,10i) doesnt work !! im
2002 Oct 17
1
underflow handling in besselK (PR#2179)
The besselK() function knows about overflows/underflows internally; there is a constant xmax_BESS_K in src/nmath/bessel.h (and referred to only in bessel_k.c), equal to 705.342, which is checked if expon.scaled is FALSE. (The equivalent number for bessel_i.c is 709, defined as exparg_BESS in bessel.h.) However, besselK(x) silently returns +Inf if x>705.342. This behavior is reasonable for
2008 Nov 24
0
[R] besselK
[cc'ing to R-devel] It's moderately obscure to me too, but ... There are two sets of bessel code in the package, one in C++ from Chris Bond and the other in FORTRAN from Netlib (I think). The FORTRAN code is the one that's giving trouble, you might try just removing the FORTRAN code from the src directory and trying again.
2010 Feb 11
1
Fwd: Recall function: "evaluation nested too deeply: infinite recursion / options(expressions=)?"
hello all i searched the archives and couldn't get a solution to the following question. i have the following function: F=function(z,v) { if (v==-.5) return(1) else return(2*v/z + 1/Recall(z,v-1)) } and while testing whether it works (ie F(z,v) is approx = besselK(z,1+v)/besselK(z,V). the recursion formula allows one to calculate besselK(z,1+v)/besselK(z,V) for large values of z )
2010 Feb 11
0
Recall function: "evaluation nested too deeply: infinite recursion / options(expressions=)?"
hello all i searched the archives and couldn't get a solution to the following question. i have the following function: F=function(z,v) { if (v==-.5) return(1) else return(2*v/z + 1/Recall(z,v-1)) } and while testing whether it works (ie F(z,v) is approx = besselK(z,1+v)/besselK(z,V). the recursion formula allows one to calculate besselK(z,1+v)/besselK(z,V) for large values of z )
2009 Nov 20
1
Bessel function with large index value
I am looking for a method of dealing with the modified Bessel function K_\nu(x) for large \nu. The besselK function implementation of this allows for dealing with large values of x by allowing for exponential scaling, but there is no facility for dealing with large \nu. What would work for me would be an lbesselK function in the manner of lgamma which returned the log of K_\nu(x) for large
2004 Oct 10
1
Modified Bessel function (third kind)
Hi: There is a Modified Bessel function (third kind, real order) besselK in R. Is there a C version of this function? I can only find a Fortran function rkbesel on http://www.netlib.org/specfun/. However, this rkbesel fortran function is the second kind. Thank you! liu _______________________________ Declare Yourself - Register online to vote today!
2009 Mar 20
1
Ruby/Rails projects "market" site - anyone?
Hi guys, I was wondering how do you look for clients for your Rails companies? I know there are places like project4hire.com but these are more suitable for individuals I think than companies. I was supprised to find there is no such "project market" for Rails projects out there - anyone interested in developing one? Do you think it might be useful / got interest of both developers and
2005 Jul 03
1
[LLVMdev] minor X86IntelAsmPrinter bug
A possible minor bug in lib/Target/X86/X86IntelAsmPrinter.cpp X86IntelAsmPrinter::doInitialization is calling AsmPrinter::doInitialization() not X86SharedAsmPrinter::doInitialization() Supprised I did not spot it earlier. Aaron -------------- next part -------------- An HTML attachment was scrubbed... URL:
2006 Jun 01
3
Share authority query
Hi all, I have a samba directory caller 'archive' which needs to create files with u=rw,g=,o= authorities which i believe is octal 0600. My smb.conf contains ... [global] # Max permissions for a share create mode = 0666 directory mode = 0777 [archive] comment = Archive Directory # Permissions when creating files in this share create mode = 0600 directory
2014 May 06
2
Replication problems
Hai, ? Im having the same problems as discribed here. https://lists.samba.org/archive/samba/2013-June/173981.html? samba4 install on debian with sernet samba. i did this about 10 times now, and this is the first time i have this. i've tried to update manualy. samba-tool drs replicate dc2 dc1 DC=INTERNAL,DC=DOMAIN,DC=TLD ? but results in : ERROR(<class
2018 Feb 26
0
Gluster performance / Dell Idrac enterprise conflict
I would be really supprised if the problem was related to Idrac. The Idrac processor is a stand alone cpu with its own nic and runs independent of the main CPU. That being said it does have visibility into the whole system. try using dmidecode to compare the systems and take a close look at the raid controllers and what size and form of cache they have. On 02/26/2018 11:34 AM, Ryan
2006 Aug 03
1
Deleted email does not appear in the Trash folder
Hi all I seem to have this problem whereby if I delete an email, then the deleted email does not appear in the Trash folder. I tried setting dovecot mail_debug = yes, but I find in syslog, mail.log etc that there is very limited information. If anyone could assit, I would be most greatful. Kind Regards Brent Clark P.s. I use Thunderbird as the mail client
2018 Feb 27
0
Gluster performance / Dell Idrac enterprise conflict
What is your gluster setup? Please share volume details where vms ate stored. It could be that the slow host is having arbiter volume. Alex On Feb 26, 2018 13:46, "Ryan Wilkinson" <ryanwilk at gmail.com> wrote: > Here is info. about the Raid controllers. Doesn't seem to be the culprit. > > Slow host: > Name PERC H710 Mini (Embedded) > Firmware Version
2018 Feb 27
1
Gluster performance / Dell Idrac enterprise conflict
All volumes are configured as replica 3. I have no arbiter volumes. Storage hosts are for storage only and Virt hosts are dedicated Virt hosts. I've checked throughput from the Virt hosts to all 3 gluster hosts and am getting ~9Gb/s. On Tue, Feb 27, 2018 at 1:33 AM, Alex K <rightkicktech at gmail.com> wrote: > What is your gluster setup? Please share volume details where vms ate
2018 Feb 26
2
Gluster performance / Dell Idrac enterprise conflict
Here is info. about the Raid controllers. Doesn't seem to be the culprit. Slow host: Name PERC H710 Mini (Embedded) Firmware Version 21.3.4-0001 Cache Memory Size 512 MB Fast Host: Name PERC H310 Mini (Embedded) Firmware Version 20.12.1-0002 Cache Memory Size 0 MB Slow host: Name PERC H310 Mini (Embedded) Firmware Version 20.13.1-0002 Cache Memory Size 0 MB Slow host: Name PERC H310 Mini
1998 Nov 13
0
R-0.63 is released
I've put up R-0.63.0.tgz up for FTP from Auckland some minutes ago. As usual, don't get it from there unless you are desperate, but wait for it to be mirrored at a CRAN site near you within a day or two. For those who *are* desperate, I've left a copy in ftp://blueberry.kubism.ku.dk/pub/R-devel/R-0.63.tgz (Be gentle, that's my desktop PC!) Here is the relevant part of the NEWS
1998 Nov 13
0
R-0.63 is released
I've put up R-0.63.0.tgz up for FTP from Auckland some minutes ago. As usual, don't get it from there unless you are desperate, but wait for it to be mirrored at a CRAN site near you within a day or two. For those who *are* desperate, I've left a copy in ftp://blueberry.kubism.ku.dk/pub/R-devel/R-0.63.tgz (Be gentle, that's my desktop PC!) Here is the relevant part of the NEWS
2003 Oct 09
2
R-1.8.0 on Sparc Solaris 8, gcc3.2.1, bus error and core dump (PR#4485)
Example run and stack trace: wazor /s/src/stat/R-1.8.0/tests/Examples $ ../../bin/R --no-save < base-Ex.R R : Copyright 2003, The R Development Core Team Version 1.8.0 (2003-10-08) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. R is a
2015 Jul 02
0
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