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Change log for 5.18 release.

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+ Maxima 5.18 change log
+ Compiled 2009-04-17
+
+
+ Backwards-incompatible changes:
+
+ * cut out broken code intended to support xgraph
+
+
+ New items in core:
+
+ * function bfallroots to compute polynomial roots with bigfloats
+
+ * general scheme for integrals of special functions
+
+ * exponential integrals
+
+ * incomplete beta function
+
+ * Fresnel integrals
+
+ * Lambert W function
+
+
+ New items in share:
+
+ * package minpack
+
+ * package colnew
+
+ * package z_transform
+
+ * package finance
+
+
+ Other revisions:
+
+ * additional special cases of integrals of power functions
+
+ * bigfloat arithmetic
+
+ * gamma function and friends
+
+ * error function and friends
+
+ * Bessel functions
+
+ * elliptic functions and inverse elliptic functions
+
+ * hypergeometric functions
+
+ * strengthen laplace function
+
+ * beta function
+
+ * Imaxima user interface: new version
+
+ * package to_poly_solver: revision
+
+ * package abs_integrate: revision
+
+ * package orthopoly: Pochhammer function
+
+ * package draw: revision
+
+ * package sarag: revision
+
+ * package plotdf: revision
+
+ * package f90: revision
+
+ * package odelin: test script
+
+ * package dynamics: test script
+
+ * package ezunits: minor revision
+
+ * package amatrix: minor revision
+
+ * recognize integers in base greater than 10
+
+ * tex function can assign user function as TeX property
+
+ * revision and translation of message strings (incomplete)
+
+ * documentation revisions throughout
+
+ * patches for Clozure CL throughout
+
+ * build Maxima with ECL via build system used for other Lisps
+
+ * minor code clean-up throughout
+
+
+ Bug fixes:
+
+ 2698078 set_partitions does not produce simplified sets
+ 2688847 float of rats rounds incorrectly
+ 2687962 hgfred([-3/2,1],[-1/2],-t) division by zero
+ 2686902 noninteger pochhammer_max_index
+ 2686901 nonglobal declare for pochhammer
+ 2672976 wxMaxima 0.8.1: set logscale x gives error
+ 2665228 read_list(file_search()) empty %o:s
+ 2664752 xMaxima and wxMaxima: eivals causes multiple %o:s
+ 2657271 wxMaxima 0.8.0 mnewton-hungs
+ 2652359 wxMaxima 0.8.0 hungup on collectterms
+ 2650081 integrate(atan(y),y,x,inf) loops endlessly
+ 2631766 abs((1+%i)^%i) is wrong
+ 2618401 bfloat produces incorrect answer
+ 2604950 rats with keepfloat
+ 2600423 Running a loaded ODE package causes error
+ 2585332 strange linechar/label display
+ 2582034 hgfred([a/2,-a/2],[1/2],z) causes error
+ 2543079 bfloat(gamma(3/4)/gamma(1/4)) is wrong
+ 2534420 asinh(%i*2b0) causes error
+ 2505945 hgfred([2,-1/2],[3],-x^2)
+ 2505241 solve multiplicities wrong
+ 2501765 integrate((-14*x^2-32)/(x^4+3*x^2+1)^2,x,0,inf);
+ 2470996 asksign(min(1,x))
+ 2459008 misspelling of grassmann algebra
+ 2412132 invalid contraction of ichr2
+ 2393169 spherical_harmonic: Bad argument to genfact
+ 2358696 is equal bug
+ 2354306 Questions with multiple commands
+ 2180110 GCL do not signal an overflow converting bigfloat to float
+ 2055235 Plot leaves range with jacobi functions
+ 1981623 wrong sign of sqrt()
+ 1757448 plot2d tries to plot no-numbers
+ 1663399 solve/algsys bug
+ 1658067 jacobi_sn(elliptic_kc(1-m)*%i/2,m) isn't simplified
+ 1498047 limit(a/n,n,inf)
+ 1419046 sign bug
+ 1055377 assignment to SETVAL causes a break if SETCHECK: ALL
+ 1045503 REARRAY complains about non-numeric size argument
+ 940835 rectform fails with float/numer flags
+ 903130 make_array doesn't check arg types
+ 887639 listarray when use_fast_arrays : true
+ 792514 Subscripted literal array doesn't display
+ 783847 assignments to %i, inf, ...
+ 623904 Taylor should be contagious in more places
+ 609466 Fatal error in solve/algsys
+ 505443 Halfangle limitation
+
+ unnumbered: bug in split_sum (package simplify_sum)
+ unnumbered: correct axis label for logarithmic plot
+ unnumbered: fix limit(signum(x), x, 0, plus)
+ unnumbered: spurious question in integrate(x/(1-x),x,-1,1)
+ unnumbered: fix infinite loop for limit(x, x, infinity)
+ unnumbered: error with atanh(0.75b0)
+ unnumbered: signum_int(cos(x) / (sin(x) - cos(3*x)),x) --> endless loop
+ unnumbered: integrate(1/x^3, x, 1, inf)
+ unnumbered: integrate(1/(x + abs(x)),x) --> division by zero error
+ unnumbered: integrate(signum(x + sqrt(1-x)),x) ---> bogus
+ unnumbered: integrate(signum(x) * f(x),x)
+ unnumbered: category refs in html docs not turned into links
+ unnumbered: map("{", ...) yields an expression which has operator ${
+ unnumbered: reset(niceindicespref) has a strange effect when i is bound
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