GNU Scientific Library - Bugs: bug #30947, Please, include fixed step size...
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bug #30947: Please, include fixed step size control object for ode suite
Submitter: | Sergey B Kirpichev <skirpichev> | ||
Submitted: | Thu 02 Sep 2010 11:49:47 AM UTC | ||
Category: | None | Severity: | 3 - Normal |
Operating System: | Status: | None | |
Assigned to: | None | Open/Closed: | Open |
Release: |
Sun 01 May 2011 11:16:21 AM UTC, comment #2: |
Sergey B Kirpichev <skirpichev> |
Fri 03 Sep 2010 07:51:53 AM UTC, comment #1: Hi,
|
Tuomo Keskitalo <tkeskita> |
Thu 02 Sep 2010 11:49:47 AM UTC, original submission:
For now fixed step size and adaptive iterations uses different routines (low level gsl_odeiv_step_apply for fixed step size vs gsl_odeiv_evolve_apply).
|
Sergey B Kirpichev <skirpichev> |
Depends on the following items: None found
Items that depend on this one: None found
Follows 1 latest change.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2010-09-02 | skirpichev | Attached File | - | Added 0001-Fixed-step-size-control-object.patch, #21376 |
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Corresponding source code
No. Just to allow adaptive step size control. Why don't
consider the *evolve_apply with fixed step as just a special case?
Of cource, I can (it WAS noted in bugreport). Sometimes it's just not
convinient, e.g. to use different loops for fixed and variable step sizes.
Why? fc_control_hadjust() always returns GSL_ODEIV_HADJ_NIL - there
is no reason to change step size.
See also thread in bug-gsl:
http://lists.gnu.org/archive/html/bug-gsl/2010-09/msg00001.html