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[lapackers] Re: [Lapackers] DROTMG


Chronological Thread 
  • From: Sven Hammarling <sven.hammarling@btinternet.com>
  • To: julie langou <julie@cs.utk.edu>
  • Cc: lapackers <lapackers@cs.utk.edu>, lapackers <lapackers@cs.berkeley.edu>
  • Subject: [lapackers] Re: [Lapackers] DROTMG
  • Date: Tue, 15 Mar 2011 20:19:17 +0000

Hi Julie,

drotmg and srotmg are part of the original BLAS (the we now call the Level 1 BLAS). drotm and srotm are also part of the original BLAS and do not seem to be tested either. I imagine that because LAPACK does not use them, those tests got eliminated.

If you go to the ACM Collected algorithms (www.netlib.org/toms/) you can find original source of the BLAS as algorithm 539. There is a tester for the modified Givens routines as part of algorithm 539.

At least two other routines, sdsdot and dsdot are also part of the original BLAS and I think that they have been dropped completely from the LAPACK set. But, again they are in the ACM collection and are tested there.

Hope that helps, best wishes,

Sven.



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