ab0d3102b5
- Added a build option 'ecl' (enabled by default)
- The ecl binary and library will be in a subpkg maxima-ecl so this
should not affect current users of maxima
- new patches:
- a0d7a43...: build a FASL library for ECL (this is merged upstream)
- handle-multiple-ldflags.patch: otherwise compilation with multiple
options in LDFLAGS fails (taken from debian)
- matrixexp.patch: fixes an error in matrix exponentiation (taken
from debian, this originates in sagemath)
A weak point is that the library maxima.fas is installed in
/usr/lib/ecl-${ecl_version} which is where ecl looks for them, but this
doesn't seem right.
Maybe an alternative would be to have the ecl package ship a symlink at
/usr/lib/ecl pointing to the versioned directory, then have the
maxima-ecl package place its library in the non-versioned directory.
24 lines
986 B
Diff
24 lines
986 B
Diff
Description: Fix error in matrix exponentiation
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This patch was written by SageMath but not yet committed into Maxima releases.
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However, it is needed for SageMath to work correctly:
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.
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https://git.sagemath.org/sage.git/tree/build/pkgs/maxima/patches/matrixexp.patch
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Author: Peter Bruin <P.J.Bruin@math.leidenuniv.nl>
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Bug-Sage: http://trac.sagemath.org/ticket/13973
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Bug: https://sourceforge.net/p/maxima/bugs/2596/
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---
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This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
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--- a/share/linearalgebra/matrixexp.lisp
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+++ b/share/linearalgebra/matrixexp.lisp
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@@ -138,8 +138,8 @@
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(print `(ratvars = ,$ratvars gcd = '$gcd algebraic = ,$algebraic))
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(print `(ratfac = ,$ratfac))
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(merror "Unable to find the spectrum")))
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-
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- (setq res ($fullratsimp (ncpower (sub (mult z ($ident n)) mat) -1) z))
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+
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+ (setq res ($fullratsimp ($invert_by_lu (sub (mult z ($ident n)) mat) '$crering) z))
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(setq m (length sp))
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(dotimes (i m)
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(setq zi (nth i sp))
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