Re: [Rd] BLAS / LAPACK version information from within R-session?

2007-07-10 Thread Jason Riedy
And Brian Ripley writes: > I know of no way to ask a BLAS dynamic library what version it > is. Tinkering with the BLAS interface hasn't fared so well, but LAPACK 3.1 added an ILAVER subroutine that returns the major, minor, and patch level versions for LAPACK itself. >> An obvious application co

Re: [Rd] 0 ^ NaN == Inf, why?

2008-10-27 Thread Jason Riedy
And John Chambers writes: > I tried a little harder, and apparently the guess is wrong. It seems > that pow(0, -0) is 1 in C. Would seem better to either have pow(0,0) > and pow(0,-0) both be NaN or else 1 and Inf, but ... There are slides from Jim Thomas summarizing the C99 choices for element

Re: [Rd] Listing of LAPACK error codes

2009-03-25 Thread Jason Riedy
And Orlando Döhring writes: > Is there a listing for the error codes from Lapack routine 'dsyevr'? The HTML-ized LAPACK functions are at http://www.netlib.org/lapack/explore-html/ although they may lag behind releases a little bit. The page for dsyevr.f is: http://www.netlib.org/lapack/explore-