Maxima Changelog

What's new in Maxima 5.47.0

Jun 4, 2023

New items in core:
function powerseries: power series for function lambert_w (thanks to Dimiter Prodanov)
init option strips any directories and the last extension from the given value. This value is used as the basename instead of "maxima-init" for the name of the init file. This is an incompatible change.
init-mac and --init-lisp are now (deprecated) aliases for --preload.
This is an incompatible change.
The variable $maxima_frontend_bugreportinfo allows the frontend to tell bug_report() how to report frontend bugs.
New items in share:
package pslq: PSLQ algorithm for finding integer relations among inexact numbers (thanks to Andrej Vodopivec)
package nelder_mead: Nelder-Mead algorithm for minimization without derivatives (thanks to Mario S. Mommer and Andrej Vodopivec)
package decfp: exact decimal floats (thanks to Richard J. Fateman)
Changes in core:
Maxima/ABCL: Use the option --noinform for ABCL. This suppresses the startup messages from ABCL, so that e.g. the Maxima
option --quiet is quiet.
Fix command line options for Maxima with ABCL.
Functions that return lambda expressions with free variables are now translated correctly. Previously many of these lambda expressions would cause internal errors when called.
Array functions and subscripted functions can now be translated.
Previously these would fail to translate with no explanation. configure: If the user doesn't specify a specific lisp maxima is compiled with all suitable lisp compilers.
no-init now actually inhibits load if the user init files.
Init files that are loaded are now printed on startup
Add functions and variables for inspecting floating point properties
Variables: most_positive_float, most_negative_float, least_positive_float, least_positive_normalized_float, least_negative_float
Functions: float_eps, bitfloat_eps, float_precision, unit_in_last_place, is_power_of_two, scale_float, decode_float, integer_decode_float
Simplify elliptic_kc((sqrt(3)+2)/4)
Fix bug in converting inverse_jacobi_ds to elliptic_f.
bfallroots with integer coefficients was not returning roots with the specified precision.
Add hypergeometric representations for elliptic_ec, elliptic_kc, expintegral_chi, expintegral_ci, expintegral_shi, expintegral_si, expintegral_li, expintegral_ei, expintegral_e
hgfred can simplify some 2F2 functions to expintegral_ci.
hgfred can simplify some 1F2 functions to expintegral_si.
Reject invalid values for debugmode.
disp_time variable removed because it was undocumented and didn't actually do anything.
Floats are displayed readably by default (fpprintprec = 0)
Function texput: punt to previously defined TeX output function
when false is returned
Strings are comparable under "<", "<=", ">=", ">"
Function plot2d: new option gnuplot_svg_background
Changes in share:
package contrib_ode: Fix name of Clairaut differential equation
in code and documentation. Was misspelled as Clairault.
package tensor: commit code from Toth & Turyshev paper for trace-free
decomposition, for time and memory assessments
package namespaces: expunge this package, moved to Github
package ezunits: derive units for diff, integrate, and 'at'
function mnewton: optional argument for the Jacobian
function mnewton: revise mnewton for greater simplicity and speed
Document harmonic_number and harmonic_to_psi functions from simplify_sum.
package draw: allow points(...) to contain nonnumeric (including non-finite floats) data
package draw: honor fill_density in errors, polygon, ellipse, bars, explicit, and region
package descriptive: implementation of skyline (outline) histogram
package descriptive: optional weight argument recognized by mean, var, std, and other functions
package distrib: maximum likelihood estimators (mle_something) for several distributions
package graphs: new functions get_unique_vertex_by_label and get_all_vertices_by_label
Changes in Xmaxima:
Changes in the Windows installer:
Update Gnuplot, SBCL, wxWidgets and TCL/TK.
Compile a recent texinfo for building the installer. Maxima now needs
texinfo 6.8, but 6.7 is included in the usual build machines for
nightly builds, etc.
Bug fixes for numbered bugs:
545: multivar taylor gives 1^2
608: taylor(x^a,[x],0,1) unsimplified
1743: limit of trig expression
3026: missing info files not well-handled
3071: limit of expressions with signum not very powerful
3136: gruntz(atan2(x^2-2,x^3-2*x),x,sqrt(2),minus) => atan2(0,0) undefined
3279: limit incorrect with domain:complex
3280: gruntz incorrect limit
3415: limit doesn't check for zero coefficients in limit((ax+1)/(ax+2),x,inf)
3592: Wrong limit
3631: gen_laguerre returns 0 to a negative exponent
3834: abconvtest undocumented and possibly unused
3848: ratsubst error ZEROP: ((MMINUS) 1) is not a number
3926: Various limits give UND where they should give IND
3953 Pressing q necessary to continue when plot2d output to svg
3956 expand(1/((sqrt(2)-1)*(sqrt(2)+1))) => 1/1 (unsimplified)
3963 trace doesn't detect calls to functions defined by DEFMFUN in Lisp code
3958 plot2d with multiple discrete plots fails
3959 plot2d + Gnuplot 4 with plot title noenhanced
3965 maxima --list-avail fails with GCL, but works with ECL and SBCL
3966 lis should be zeta(s) (with conditions on s)
3967 elliptic_e(5*%pi/4,1) inconsistent with numerical evaluation
3968 zeta(-r) should use analytic continuation?
3970 draw does not do adequate argument checking
3972: gcl only: Autocompletion inverts command case
3982 tex complains about Unicode character in symbol
3984 limit for und + something yields something instead of und
3985: integrate(sin(x*cos(x)), x), risch; causes unlimited recursion
3992 Add word to Integration.texi
3996: parse_string fails to parse string which contains semicolon
3998: Lisp error when parser encounters eof in a comment
4008: translator and prederror
4018: defint(foo,,0,inf) lisp error when denom(foo) contains %i
4029 limit(cos(1/x)^2 + sin(1/x)^2 + cos(x),x,0) --> ind
4035 Invisible characters should work better
4036: prederror affects bigfloat calculations
4043: bug in to_poly
4045 Different results for integration in Maxima 5.45.1 and 5.46.0
4046 plot2d legend option shows the wrong label in the list
4048 An incorrect limit
4050: Maxima can't handle limits of Fibonacci expressions
4056 Cannot create very large data array
4060 Wrong limit of -3li3+3x*li2+x^3 at x -> inf
4061 2.0^1024 gives "false" on second try
4062 limit(li3, x, inf) gives li3
4064 Simple limit triggers Lisp error "1 is not of type LIST"
4077 Replace opcons with ftake*
4084 Error in [lin]solve with orderless called before
4088: maxima variable prefer_d undocumented
4089 Specvar ans in schatc
4090 output formatting: -x-1 has redundant parentheses: (-x)-1
4092 Repeated factorial (n!)! displayed the same as double factorial n!!
4094 Build warning in share: grep: warning: stray before #
4029 limit(cos(1/x)^2 + sin(1/x)^2 + cos(x),x,0) --> ind
4097 Bad string representation of integers in the first argument of save
4100 On macOS, building Maxima has some issues
4107 least_positive_float doesn't print/read correctly in float/bfloat
4109 Limits of polylogarithms
4112 Double superscript in tex(conjugate(z))^2
4118 facsum + operator(".") + dotdistrib:true + GCL = FAIL
4119 ECL fails decode_float(-0.25) test
4120 is("foo"<3) gives internal error
Unnumbered bugs fixed:
commit 7a7114c: avoid call to undefined function expintegral_ei
commit fe1d8cf: avoid clobbering global state when autoloading
commit 70a5f78: expunge calls to 'sign' in share package distrib
commit 7bc968a: in printf, be more consistent about non-numeric argument for ~e, ~f, and ~g
Documentation:
Help can use html docs instead of displaying help to the terminal.
This is enabled by setting output_format_for_help to 'html; it defaults
to 'text. Use 'frontend to display help using Xmaxima, wxMaxima or
other frontends.
Add documentation for trigtools to the manual.
Some reordering of the trig functions in the manual.
Some renaming of sections in the manual to be more explicit.
Add more cross references.
Add more examples for erf_representation, hypergeometric_representation, expintrep, expintexpand, besselexpand
Add examples for the ggf package.

New in Maxima 5.46.0 (Apr 16, 2022)

New items in core:
Added eval_string_lisp to read in and evaluate lisp forms from a string
Maxima compiled with ABCL can use network connections (option "-s"),
which is used by frontends like Xmaxima and wxMaxima.
Added gnuplot_send to open a Gnuplot pipe and send a command to it.
new code to commute conjugate of derivative (Commit [565fcf]).
new plot option window. It can be used to send the plot to a window
different from the default 0 window.
New items in share:
new package quantum_computing: a simulator of quantum computing
circuits.
new package test_batch_encodings: tests for batch and batchload with different character encodings
new file conics_04.mac: intersections of conic sections
package distrib: implementation of inverse gamma distribution
package stringproc: extend the range of recognized encodings somewhat
package numericalio: extend function md5sum to accept binary input stream
package numericalio: recognize 1-element strings as equivalent to symbols for separators
package gentran: update to new version contributed by Michael Stern
Changes in core:
plot2d, plot3d, mandelbrot and julia now use gnuplot_pipes by default
in all operating systems and in all cases (plot shown on the screen or
saved to a graphics file). No temporary files are used.
option gnuplot_strings made more consistent in different terminals.
option gnuplot_script_file now accepts complete path file names.
Changes in share:
draw: Restored the default gnuplot_pipes format (Commit [a54f2f])
draw: Restores the window, font and size options for default
terminal (Commit [096f0b])
Changes in Xmaxima:
fix to allow several plotdf windows to work independently by refreshing
the expressions of the derivatives every time a new trajectory is plotted.
Changes in the Windows installer:
Update SBCL, wxMaxima, TCL/TK.
A newer Gnuplot version is available, but causes problems when using
pipes on Windows, therefore that was not updated.
Use the HTML manual (not the PDF version) in the start menu.
Strip included C programs (saves some space).
The command line option "--userdir" did not work on Windows, fixed that.
Bug fixes for numbered bugs:
#380: algsys ab=cd grossly incomplete
#484: limit(x=0,x,0) wrong
#926: sign errors in cartan package
#1097: pattern variable appears in letsimp result
#1848: taytorat leaks internal gensyms from multivar expansions
#2247: not plotting from Vista, probably due to national characters
#2388: wrong limit
#2446: horner of multivariate taylor gives junk
#2709: letsimp' is wrong ifratexpand' is called
#2837: ev causes bogus WNA checks for sum, product, define and ":"
#2876: Error simplifying infix operators declared l/rassociative
#2921: errcatch fails to catch various errors
#2953: limit loops endlessly
#3068: taylor of CRE fails
#3159: plot3d in Windows not recognizing plot option color
#3453: Mesh Lines Bugged | Cannot Change Their Color from Default
#3462: simplify_sum() variable name clash
#3483: limit apparently causes infinite loop
#3520: "Directory does not exist" errors on Windows 10
#3542: Unable to display second plot until first one is closed
#3605: Variable confusion in function handling Taylor series
#3654: uniteigenvectors fails if uv[1] is used in the user main program
#3656: Update builtins-list.txt
#3718: incorrect trigonometric definite integral
#3736: Quoting either min or max inhibits simplification
#3764: limit of min works with assume but not with asksign
#3765: min(und,...) gives error with trylevel > 1
#3769: max or min called on CRE expressions
#3789: package ezunits: ev(dimensions(u), nouns) stack overflow
#3793: plot2d fails on small x-range
#3796: plot3d doesn't support rotation in 5.45
#3797: plot2d(0, ...) gives "can't plot with empty y range" -- regression
#3801: error sourcing .xmaximarc on Windows
#3805: plot2d should give a clean user error for undefined functions
#3807: plot2d heuristic to detect unbound variables excludes valid cases
#3810: integrate error "not of type FIXNUM" for integrand with floats in it
#3819: Implicit plot2d calculating 1/0 gives Lisp error
#3820: testsuite with display_all = true
#3825: apply('forget, facts()) gives Lisp error
#3826: limit returns temp variable expression
#3838: limit(atan(sin(x)),x,inf,plus) --> atan(ind)
#3844: Wrong limit involving gamma function
#3881: plot2d not ignoring errors within functions
#3883: plot creates invalid gnuplot command
#3893: display2d and long numbers
#3907: gnuplot_postamble not actually the last Gnuplot output before plot
#3910: correct 'an Unicode' in doc/info/stringproc.texi
#3921: Expanded subtracted from unexpanded with e^ix does not integrate to zero
#3925: Maxima help button opens "file not found"
#3934: expand(1/(1+%i)^4) => (-4)^(-1) (unsimplified)
#3935: Noncommutative multiplication with string argument triggers "declare: argument must be a symbol"
#3936: plot2d sends invalid file to gnuplot
#3945: 'props' isn't empty at startup
#3950: letsimp confuses symbols and nullary applications
#3951: screen terminal no longer works as described in docs
#3952: plot2d clipping warnings not appearing
#3953: Pressing q necessary to continue when plot2d output to svg
#3956: expand(1/((sqrt(2)-1)*(sqrt(2)+1))) => 1/1 (unsimplified)
#3958: plot2d with multiple discrete plots fails
#3959: plot2d + Gnuplot 4 with plot title noenhanced
Unnumbered bugs fixed:
(x^^-1) . x simplified to 1 instead of dotident (commit [c8d115d])
Adjust derivatives of beta_incomplete and friends (commit [ad682b0])
mailing list 2022-01-04: Bad vect package? (commit [c6110df])
mailing list 2021-06-27: ev(xxx,pred) vs is(xxx) (commit [37206b8])
Stackoverflow: (wx)Maxima: texput for powers of expressions (commit [4e65bc3])
Stackoverflow: How to plot a bode_gain inside the wxmaxima GUI? (commit [6bee3ca])
Documentation:
Examples in the introduction to strings (Data Types and Structures chapter)
fixed.
New build scripts in Lisp, Python is no longer needed to build the documentation
Update japanese documentation
New configuration options --enable-lang-ru and --enable-lang-ja for building
japanese and russian documentation
New configuration option --enable-build-docs (default = yes) to make it
possible to omit building documentation
Documentation is only produced in UTF-8 encoding and no other encoding
Expunge build and runtime machinery for doc/info/<lang>.utf8</lang>
Remove configuration options --enable-lang-<lang>-utf8</lang>
Fix building PDF documentation for non-english languages. Use xeTeX
make pdf PDFTEX=xetex
to build Japanese and Russian PDFs.
Build system:
Many improvements wrt out-of-tree-builds and translations of the manual

New in Maxima 5.44.0 (Jun 8, 2020)

New items in core:
Additional float constants: LEAST-NEGATIVE-NORMALIZED-FLONUM largest_negative_float, least_negative_float least_positive_normalized_float, and least_negative_normalized_float
Support for pre/post sub/superscripts (get_index_properties declare_index_properties and remove_index_properties) 2) Make declare_index_properties
Mark non-trivial results from gcfactor with a GCFACTORED flag
New items in share:
pytranslate, which converts maxima to python
rtest_inteqn
descriptive: find_runs and find_runs_inverse
Changes in core:
Code clean ups and removal of functions that only had a historical meaning
In TEST-BATCH, ensure that list of unexpectedly passed tests is nonempty before reporting it
lisp-quiet can now be told not to use subsequent :lisp commands
defmfun now adds an ARG-LIST property that allows frontends to validate arguments
An improved version of float_approx_equal
Better handling of non-numerical input to find_root
Better handling of defint errors triggered by laplace()
Avoid variable capture in the WITH-NEW-CONTEXT macro
Evaluate the body of a WITH-NEW-CONTEXT form as an implicit PROGN
Numbers are no loger compared using EQ instead of EQL
Characters are no loger compared using EQ instead of EQL
Fixed bogus translations of apply2 and applyb2
Fixed bogus translations of atan and atan2 with float arguments
Fixed the bogus translation of atan2 with one float and one rational argument
Fixed bogus and inconsistent translations of max and min when the arguments were a mix of float and other modes
Fixed bogus translations of = and # with mixed float and numerical arguments
Fixed an internal error in the translator when attempting to convert a variable of mode rational to a float
Fixed the inconsistent translation of signum with a float argument
Fixed the bogus translation of random with a float argument
Fixed the translations of log and sqrt so they honor the flag tr_float_can_branch_complex
Updated gentran to v.5
Improved the pattern matcher for "+" and "*" expressions, see maxima-discuss, circa 2019-12-27: "Function to recognise series"
allow zn_log to work on subgroups
gamma_incomplete_lower is now returned in the noun form in many places
operatorp(expr,op) was inconsistent with operatorp(expr,[op])
sqrtdenest is now built-in, not a share function
load(sqdnst) now is a no-op
Changes in share:
Interpol used funmake instead of apply
An updated version of COMA
A testbench for draw()
plot2d with a single function now uses xlabel
Many minor corrections
In package amatrix, protect against empty matrices when converting amatrix to matrix and vice versa
Fixed contragrad in ctensor, added tests for cograd/contragrad
Bug fixes:
3412: Corrected the translation of conditionals
3587, +3489: Better handling of limits of logarithms
3521: In simplify_sum, avoid double-counting -min_ni term in to_hypergeometric
3265: gcfactor(0) -> division by zero
2839: gcfactor(9) => 9
3287: Cross product of scalar zero versus vector yields zero result
3583: Stack overflow for equality testing with assumptions
3608: logic_simplify handles inequalities incorrectly
3607: printprops displays matchdeclare properties incorrectly when value is a lambda
2174: Bogus translation of declare
3513: Emacs: wxdraw3d not working
3048: notequal is not translated properly
Unnumbered bugs:
plot now works correctly with function names containing _, ^ and @
Maxima now no longer becoms unusable with errset=t
FREE-LISP-VARS property for LET was broken
translator: improved error message when a throw is not in a catch
PATCH-UP-MEVAL-IN-FSET had a bogus BARFO call
standard-input was broking during gentranin runs
Problem loading abs_integrate in imaxima mode (emacs)
compgrind:true caused compfile to not write to the output file
compgrind:true didn't ensure pretty-printing of compfile output
Taylor expansion for gamma_incomplete_lower(1/2,z) now works
compgrind:true didn't ensure pretty-printing of compfile output
gamma_incomplete_lower now respects gamma_expand
Additional improvements:
The documentation now is build use a stock makeinfo
Many other improvements to the way documentation is generated
The RPM files now end up in the build directory
A way to run many draw() and plot() examples for manual tests
More out-of-source-build improvements
"make dvi" was subject to bit-rot and should now work again
Resolved a few cases in which common variable names in arguments caused unexpected behavior
Better ABCL integration
Added a help message (Option: /?) to the windows installer
Fix errors when installing on MacOS via Homebrew
run_testsuite(share_tests=only) now doesn't fail due to unicode-sniffer.lisp not having been loaded
Draw now translates the coordinates of labels, too
Use DLMF 8.8.9 to expand gamma_incomplete(a+n,z)
Expand gamma_incomplete for rational order
Many code cleanups
Many improvements to the documentation
Windows Installer: Updated wxMaxima to the new release

New in Maxima 5.43.2 (Jan 27, 2020)

New in Maxima 5.43.1 (Jan 26, 2020)

New in Maxima 5.42.0 (Oct 1, 2018)

New items in core:
New function define_opproperty to define an operator simplification
The environment MAXIMA_INITIAL_FOLDER if set tells Maxima which
folder to start in.
The variable $factor_max_degree that prevents certain polynomials
from being factored if their degree exceeds that value instead of
letting factorization cause an out-of-memory.
The variable factor_max_degree_print_warning that tells if to
output an warning in this case.
A test bench for Maxima's interactive functions.
New items in share:
A test bench for draw
timeout.lisp
new version of package share/contrib/Eulix
Trotter-Johnson algorithms
combinatorics.lisp
A new README file for the share directory.
Changes in core:
"make check" now runs both the normal and the share test bench
"make check" now also runs the tests from rtest_ask.
test bench failures that resulted in "error-catch" now show a
more descriptive error message
a warning() command that works similar to error()
Windows installer: support components (one can deselect optional
components like VTK, wxMaxima or Gnuplot during the installation to
save space)
MAPATOM returns true for mapatom(-4)
A file with test cases for draw
A file with test cases for drawdf
A file with test cases for plot
errcatch() now produced meaningful error messages.
Add support for multiple return values to the ERRSET macro
scene() is dropped from plot() as it depends on Tcl/VTK which is no
more actively supported and currently is broken.
gcl: concurrent Maxima processes now can negotiate which can use
how much memory.
Emit warning from parser when a list is constructed and then
discarded in ([a,b,c], ...).
Emacs > 26.1 compatibility.
Maxima now deletes its temp files on exit.
Automatic file encoding detection if the file begins in a BOM.
Improved the behavior of the exterior product operator when acting
on ordinary products.
Updated the Spanish translation
The functions that work with permutations, given as lists of
consecutive integers from 1 to n, will now use the prefix "perm",
to distinguish them from those that permute any arbitrary list or
set, which use the prefix "permutation". The name of
permutation_index was changed to perm_length and apply_permutation
became permute.
On Windows Maxima now autodetects the directory it finds its files
in.
Ask the user to use ; at the demo prompt, to make it work also in
Xmaxima.
Check for correct syntax of parametric plots.
Removed the old non-adaptive parametric plotter
Typecheck backtrace's argument
Better desktop integration for Linux systems
Changes in share:
Draw/MS Windows: Gnuplot now supports multiplot
Draw/MS Windows: Gnuplot now supports multiple draw windows
wrstcse: A simple package for tolerance calculations.
The test bench file's names now all begin with "rtest".
Marked many known bad tests as "bad" so changes that break
something are easier to find.
engineering-format now allows to specify which number range doesn't
need exponents.
Drawdf now no more translates its input which made it slightly
faster, but sometimes caused internal errors. Setting
drawdf_translate:true reverts it to the old behavior
The share testsuite now tests the draw package, too.
Draw: Allow vector coordinates to be transformed
Draw: Resolved a warning for multiplot svg output
Draw: Contour can now be set to "none" as documented in the
manual.
Draw: Support for vtk7. A "draw_renderer:vtk7" enables it.
Draw: Resizing the window now can change the aspect ratio of the
plot.
Draw: Allow to specify numeric line types
Draw: A finer default grid
Enable remove(x, rule) to succeed when x is a string.
vector.dem and qual.dem now can be loaded.
Xmaxima now accepts more of the standard options.
Vtk (except of the plot routines) now is migrated to vtk-python
which is actively supported in favour of the no-more working
tcl-vtk
Bug fixes:
3459: Wrong limit calculation
3458: addcol mishandles empty matrix as first argument
3457: true[2] gives wrong error
3426: Precision problem for small positive values in bfpsi0
3410: extremal_subst gives bogus results with undefined predicate
2822: After load("diff_form") `functions' fails
3363: Documentation of modulus incorrectly says it applies to all
rational numbers
3439: Simplode output on empty list
3023: divide(1,0) gave a Lisp error instead of a Maxima one
1581: sublis & sublis_apply_lambda:true causing Lisp errors
2803: trace/timer do not work for functions with quoted arguments
3247: Maxima's trace and timer handle rules incorrectly
3368: integrate('limit(...),...) internal error
2880: integral of secant shouldn't need principal value
2116: lambda form for taylor_simplifier
3431: error system variable holds unsimplified list, causing errors
to be repeated when trying to access it
3423: tellsimpafter: circular rule attempted when loading package
vect twice
3337: Wrong scalefactor for cartesian2d
2644: integrate(1/(1+s^7),s,0,%pi) includes a false term
3413: false in definite integral of rational
2845: Avoid initialization-time compile in commac.lisp
3416: limit gives limit(x^r,x,inf)=>0 when "Is r pnz" is answered
zero
2928, 2994 and 3419: Detect an endless loop in BPROG (simp.lisp)
and throw rat-error. rat(1/(x^(2/3)+1)), algebraic and
similar expressions no longer loop forever.
3009, 3146 and 3147: Certain polynomials when factored caused an
out-of-memory
3422: li[2] and li[3] numerical evaluation fails for complex not in
rectangular form
3402: Unbinding defined variable generates error in compiled
functions
3406: pdf_geometric appears to be incorrect and/or poorly
documented
3403: Function/lambda parameters declared constant cause error
2012: Lisp stack overflow with dpart
3390: ?great mishandles box
3387: kill(all) looses mtime's "nary" property
1820: missing eigenvectors
3373: Running the test suite twice causes errors
3379: recur.mac correct bug in varc2
3375: algsys failure on homogeneous linear equations
3293: derivatives don't format correctly using alt-display TeX
3238: plot fails with small x-range due to rounding
2835: Parametric plotting failed if the variable was not t
3356: sign(nz * nz) = nz
3349: Using VTK on windows gives 'vtkpythonC:' error
3344: Conflict between sym package and grobner package
Unnumbered bugs:
Windows installer: Fix the plotting problem with Clisp/Windows and
long user names.
Windows installer: Fix reading maximarc on Windows, when the
username contains a space.
Garbage Collector Defaults for gcl that allow Maxima to be able to
run the testbench without getting an out-of-memory
Many error messages now are easier to understand
Some share tests contained timeouts that were set to values that
were easily to trigger even on current computer systems
share/gf and share/contrib/fresnel can now be loaded without
encountering an error.
simplode on a singleton list could return a non-string
If keepfloat was true partfrac often resulted in errors. Now
keepfloat is false during partfrac().
'make pdf' now works for de and pt.
A Lisp error appeared when display2d:true and there are nested
DISPLA calls
tex(): The output for matrices is now upwards compatible to
amsmath.sty
Fixed some shell quoting issues
Many translator improvements
Fix charfun when prederror is true
Quieted many irrelevant warnings on loading packages, for example
caused by autoload.
Fixed a bug in perms, when called with three arguments
beta_incomplete now works correctly with sums.
Windows: Fixed reading maximarc on Windows, when the username
contains a space.
Lapack now can be compiled out-of-the-box on SBCL on Windows (64Bit).
running rtest_levin after rtest15 causes some failures
because MLIST is not recognized as an operator.
Process command line option --run-string correctly
changes to stream handling for SBCL, which improve
writefile, appendfile, asksign, describe, and entermatrix.
trigsimp fails with pderivop
In $ARRAY, handle list argument + use_fast_arrays correctly.
Resolved many potential variable name clashes with user-specified
variables
Xmaxima: Resolved an error message that caused a crash
Xmaxima: Removed Win98 workarounds that made problems with modern
Windows systems
Xmaxima now supports file and directory names with spaces in them.
Additional improvements:
Additional bug fixes
Performance improvements
Much work on the manual including many hyperlinks, clarifications
and additional information on how to speed up user functions.
A script that tests loading packages twice or package combinations
A few files that didn't need an "executable" flag were marked
as executable.
Updated all references to wxMaxima to wxMaxima's new URL.
The wxMaxima version the Windows Installer comes with now is
Version 18.10.1

New in Maxima 5.40.0 (Jun 2, 2017)

New items in core:
[0eda309] New functions encode_time and decode_time, with test cases.
New items in share:
[534a7d1] add symplectic_ode package
[46a7a0f] Add Kaplan-Meier's survival and empirical distribution estimators
Changes in core:
[cb259bb] change O(n^2) method for flattening list to O(n) method.
[21cf8e1] split totient into two parts
[6ef2b26] optimized gcfactor and tried to make it easier to read.
[1594167] optimize gc squaring and inline gctime1
[d7ff7c3] inline gctimes.
[4c8b6c6] sped up psumsq.
[f306940] speeded up imodp.
[efadb61] new implementation of ; is about a factor of 2 faster on sbcl
[9c79308] move jacbi and related functions from rat3c to numth
[75d8ceb] sped up divsum by splitting it in two parts where the lower
Numerous cross-compiling changes.
Numerous documentation changes and improvements.
Build/installation improvements.
Many updates to examples.
Many changes and improvements to test system.
Changes in share:
[9c7c70c] Commit new version of COMA. Sent by Wilhelm Haager
[0ef9ab0] Check for a constant "variable" of integration in romberg and bromberg
[834ffb3] Import ODEPACK fortran code.
[06bc1bd] Julia() and mandelbrot() are modified to create maxoutXXX.gnuplot
[dca80e3] plotdf: An option to change the arrow density. Patch from themusicgod1.
Bug fixes:
[6ff1570] fix bug 3291: ecl on Linux needs utf-8
[db7788f] fix bug3300 Incorrect sha256sum output
[b896d1f] In rtest_translator, skip some tests which cause a crash (bug #3291).
[f1bc324] Implement numerical evaluation for gamma_greek. Fixes SF bug #3277.
[eec3d7f] In tests for kill(props), work around bug #3289.
[6267b88] In lsquares_mse, ensure temporary variable is assigned the correct value. #3282.
[b58a547] In lsquares_mse, ensure temporary variable is assigned the correct value. #3282.
[a7239b1] In RISCHLOGEPROG, detect zero divisor. This fixes SF bug #3274.
[eaacba6] Unlock :common-lisp package when compiling with SBCL. Fixes SF bug #3271.
[71ee1c0] Fix bug #2740: demo(romberg) fails
[5fb8f81] Add test for bug #2295: Failure to evaluate definite integral
[35c625e] Add tests for bug #2314: Two different results for an integral
[56fb70e] In tests for simplify_sum, add a few more tests from bug report #3236.
Unnumbered bugs:
[06c0fc7] operatingsystem: Make chdir work with recent gcl versions.
[7277f54] gcfactor(4/(%i+1)) gave an internal error in $bothcoef.
[c477689] Give informative error message when some index is not an integer: "rat(-1) isn't an integer?" from mailing list 2017-03-04.
[96c57d5] work around bug in gcl decode-universal-time.
[b4819b4] work around bug in gcl decode-universal-time.
[a36bf53] When evaluating float(diff(...)), apply float only to the first argument. Fixes bug reported to mailing list 2017-02-27.
[bffe54f] In GETL-LM-FCN-PROP, return NIL for argument which is not a symbol. Fixes bug reported to mailing list 2017-03-04.
[ef1fa9e] Remove built-in symbols from the list for user-defined properties. Fixes bug reported to mailing list 2017-02-24.
[70e05dd] Handle Lisp arrays in MQAPPLY expressions more carefully. Fixes bug reported to mailing list 2017-02-02.
[761cc1c] Handle Lisp arrays in MQAPPLY expressions more carefully. Fixes bug reported to mailing list 2017-02-02.
[b6dd08c] A solve() enhancement by Richard Fateman that should fix a zillion of bug tickets.
[b6b5c5c] Translate define and ":=" correctly by nuking the translator property. Fixes bug reported to mailing list circa 2017-01-24.
[5cfc6fd] Fix bernoulli and binomial pdfs when p=0 or p=1
[d6739e9] Fix bernoulli and binomial pdfs when p=0 or p=1

New in Maxima 5.39.0 (Dec 13, 2016)

New items in core:
New functions firstn and lastn
Changes in core:
Special variable clean-up
Crosscompiling support
Gnuplot 5.0 or newer versions
Documentation updates
function save: portable way to save "fast" arrays (hash tables)
functions timedate, parse_timedate: handle timezone offsets
Floating point overflow handling
Complex numericals
Testsuite additions and improvements
GIT fixes
ODE improvements
Load .wxm files from wxMaxima
Temporary file handling improvements
New in share:
package decfp: decimal bigfloat package
Changes in share:
In some share test scripts, put reset() at the top
package solver: rename solver.mac to Solver.mac
package stringproc: new functions slessp, slesspignore, sgreaterp, sgreaterpignore (string comparison)
package charsets: several updates and improvements; still work in progress
package boolsimp: code clean-up; no functional changes
package descriptive, functions continuous_freq, discrete_freq: faster counting algorithm; accept arrays as well as lists
Bug fixes:
[54822ea] Fixed bug #3258: diff with negative order in integrate
[0e4ed41] Fix issue #3255 by changing how resimplification works
[55ba236] In risplit, in preparation of fixing issue #3255 (logarc)
[6e7f9dd] Partial fix #3216: In package lapack, load without compile
[ad86a80] Fixed bug #3232: In ezunits, don't compile predicate functions
[0ec66c6] Fixed GCL bug #49689: Mark a known failure in rtest11
[98b0349] Fixed bug #3213: Round when formatting bigfloats
[3745efa] Another test for bug #3244.
[67fd622] Fixed bug #3246: look-up entries for inv. trig antiderivatives
[120d8be] Fixed bug #3241: In MQAPPLY1, call AMPERCHK
[e916dd0] Fixed bug #3235: In RGRP, rephrase test for ECL
[7060221] Add tests from bug #3221
[2204fca] Fixed bug #3221: elliptic_pi(n,z,m) wrong for z > %pi/2
[cb3dc1c] Fixed bug #453: algsys fails in simple case
[7efa7eb] Add tests from SF bug 2059.
[4851e2c] Add tests from SF [bugs:2038] and [bugs:#2736]
640ca75 SF [bug:#1266][bug:#3208] Don't use $radcan when simplifying in algsys.
2986fc0 Fix SF [bugs:#3208]. Use sqrtdenest in algsys to simplify partial solutions.
5fd2f55 [bugs:#3208] algsys.lisp:presultant: resimplify result
4734ec8 share-subdirs.lisp is auto-generated and in version control - which is afaik unavoidable for the lisp-only build system. It also currently is out-of-sync with the repo => Updated the repo version.
f91d677 Increase output when running share/contrib/diffequations/tests
a5873ba SF bugs 3210 and 3212. Fix algsys regressions.
9a4694f Bug #2796 can't load ode2 with n declared constant
3c6c473 Bug report ID: 1621 Wrong solution to ode2
cf9cbb2 Fixed bug #2667: Distinguish trig function exponents in TeX
bf4cf94 In rtest_log, additional tests for SF bug #3105.
9ef3fee Fixed bug #3148: Most of the change is in indentation
8f523fc Fixed bug #3194: No simplification of tan(x+n%pi) and cot(x+n%pi)
fdadebc Fixed bug #3186 and other get_plot_option issues.
3fd2b4c Fixed bug #3022: Update the RPM spec file
aa0a365 Fixed bug #3180: declare(foo, antisymmetric)
9ad3f2f Add test for SF bug #3090
a57ff0c Add test for SF bug #3170
4568937 Fixed bug #3144: Avoid unbounded recursion in PTIMES%E
0bcccbe Fixed bug #3109: is(sin(x)

New in Maxima 5.38.1 (May 17, 2016)

New in Maxima 5.37.0 (Sep 2, 2015)

New in Maxima 5.36.1 (Sep 1, 2015)

New in Maxima 5.36.0 (Sep 1, 2015)

New items in core:
function parse_timedate: parse time/date string
New items in share:
function lll: Lenstra-Lenstra-Lovasz algorithm
Changes in core:
at: remove variables in simplification
Other changes:
package contrib_ode: update test suite
package ezunits: additional femto, pico, nano, and micro fractions
package ezunits: apply rules more aggressively
package maxima-odesolve: documentation
package gentran: update
package draw: geometric transformations for 2D implicit functions
package coma: new version
package maximaMathML: hook mechanism
package noninteractive: new script expand_branches.mac
Bug fixes:
[#2924]: Maxima fails to run on lisp interpreters
[#2922]: input '20log(x)' causes strange error
[#2919]: Definite integration broken: integrate(1/(x^2), x, -inf, inf) gives zero
[#2913]: trigrat crashes with variable name "e"
[#2907]: ratsubst(z, sin(x + 1), 0) crashes when radsubstflag = true
[#2898]: limit of continuous --> und
[#2892]: julia() and mandelbrot() creates maxout.gnuplot in different place than plot2d()/plot3d()
[#2883]: load (lsquares); Error
[#2881]: quad_qags recently got problems evaluating erf
[#2878]: Installing from maxima-5.35.1.tar.gz requires Makeinfo
[#2873]: implicit_plot does not accept symbolic ranges
[#2865]: Use exp as a list
[#2862]: Incorrect result for integrate(u/(u+1)^2,u,0,inf);
[#2854]: Integral hangs with domain:complex
[#2853]: abs_integrate hangs after encountering log(0)
Unnumbered bugs:
mailing list 2015-03-16: Requesting advice on simplification rules for user-defined operators
mailing list 2015-02-09: save(..) can't save syntax extensions in a readable form
mailing list 2015-02-16: expand phenomenon
mailing list 2015-02-08: Newbie lisp question
mailing list 2015-01-22: Matrix inversion with detout = true?
mailing list 2015-01-09: Problem loading package COMA
mailing list 2015-01-05: order of operands is changed due to source information
commit [b0a9ab]: Fix jacobi_sc(elliptic_kc(m)/2,m)
commit [ff92d9]: Fix make_elliptic_f for inverse_jacobi_ns and inverse_jacobi_nc
commit [b7dc04]: Added device info to paths in cl-info::*info-tables*
commit [95c186]: Fixes a bug in the style option parser
commit [bf9a67]: Correct the derivative of bessel_y wrt order: diff(bessel_y(v,z),v)
commit [0d8d8a]: Handle the (finite) geometric sums with quotient 1.
commit [b3cffd]: Fix bug controlling non numeric symbols in explicit
commit [114860]: Add device to maxima-load-pathname-directory.
commit [72d617]: Fix maxima -s PORT command.