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[CHANGESET] reallog, realpow and realsqrt functions
From: |
John W. Eaton |
Subject: |
[CHANGESET] reallog, realpow and realsqrt functions |
Date: |
Fri, 21 Mar 2008 14:30:43 -0400 |
On 21-Mar-2008, David Bateman wrote:
| Here is a patch that adds these three rather trivial functions that
| return an error if the return value is complex.
I applied it.
| Funnily to be matlab
| compatible "realpow(1i,2)" is allowed. These are matlab core functions,
| though I wonder how much they are really used..
I guess these are useful if you are doing something iterative and you
expect the results to be real, but it is possible that an iteration
may stray into a region that generates complex values? If so, then
why not also "real" versions of acos, acosh, asin, atanh, and log10
(and maybe others)? But seriously, I don't see a need to add them.
Thanks,
jwe