Mercurial > hg > octave-terminal
changeset 19:cbd2e6016014
[project @ 1993-08-10 20:13:07 by jwe]
(general_functions): Add balance to the list.
author | jwe |
---|---|
date | Tue, 10 Aug 1993 20:13:07 +0000 |
parents | 15a1c5152f3d |
children | e67ff9b5c109 |
files | src/builtins.cc |
diffstat | 1 files changed, 17 insertions(+), 0 deletions(-) [+] |
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--- a/src/builtins.cc +++ b/src/builtins.cc @@ -203,6 +203,23 @@ { "any", 2, 1, builtin_any, "any(X): are any elements of X nonzero?\n", }, + { "balance", 4, 4, builtin_balance, + "balancing for algebraic and generalized eigenvalue prblems\n\ +Usage: \n\ + algebraic eigenvalues problem:\n\ + aa = balance(a{,opt}) or [{dd,}aa] = balance(a{,opt})\n\ + generalized eigenvalue problem:\n\ + [cc, dd, aa, bb] = balance (a, b {,opt})\n\ +where 'opt' is an optional single character argument as follows: \n\ + 'N' or 'n': no balancing; arguments copied, transformation(s) \n\ + set to identity\n\ + 'P' or 'p': permute argument(s) to isolate eigenvalues where possible\n\ + 'S' or 's': scale to improve accuracy of computed eigenvalues\n\ + 'B' or 'b': (default) permute and scale, in that order. Rows/columns of a \n\ + (and b) that are isolated by permutation are not scaled\n\ +[dd, aa] = balance (a, opt) returns aa = dd\a*dd,\n\ +[cc, dd, aa, bb] = balance (a, b, opt) returns aa (bb) = cc*a*dd (cc*b*dd)\n", }, + { "clc", 1, 0, builtin_clc, "clear screen\n", },