Copyright (C) 2001-2019 Free Software Foundation, Inc. See the end of the file for license conditions. Calc is an advanced desk calculator for GNU Emacs. Originally written by: Dave Gillespie c/o Synaptics, Inc. 2698 Orchard Parkway San Jose CA 95134 daveg@synaptics.com, uunet!synaptx!daveg Calc was maintained for many years by: Jay Belanger Summary of changes to "Calc" ------- -- ------- -- ---- For changes in Emacs 23.1 and later, see the main Emacs NEWS file. * Version 2.1: ** New matrix mode for square matrices. Improved handling of non-commutative products. ** New functions: powerexpand and ldiv. ** Added new functions: sec, csc, cot, sech, csch, coth. ** 0^0 now evaluates to 1. ** Added a new language mode for LaTeX. ** Calc now tries to use an appropriate language mode in embedded mode. ** Calc now restores original modes when leaving embedded mode. ** User settable variables which are not set with keystrokes are now customizable. ** Made ~/.calc.el the default Calc settings file. ** Miscellaneous updates and bugfixes. * Version 2.02f: ** Fixed a bug which broke `I', `H', `K' prefix keys in recent Emacs. ** Fixed a bug in calc.texinfo which prevented "make tex2" from working. ** Updated `C-y' (calc-yank) to understand Emacs 19 generalized kill ring. ** Added a copy of "calccard.tex", the Calc quick reference card. * Version 2.02e: ** Fixed an installation bug caused by recent changes to `write-region'. * Version 2.02d: ** Fixed a minor installation problem with an Emacs 19.29 byte-compiler bug. ** Removed archaic "macedit" package (superseded by "edmacro"). * Version 2.02c: ** Patch to port Calc to Lucid Emacs 19; still works with GNU 18 and GNU 19. ** Fixed a bug that broke `C-x C-c' after Calc graphics had been used. * Version 2.02b: ** Minor patch to port Calc to GNU Emacs 19. Will be superseded by Calc 3.00. * Version 2.02: ** Revamped the manual a bit; rearranged some sections. ** Added marginal notes for Key/Function Index refs in printed manual. ** Changed `M-# r' to deal more gracefully with blank lines. ** Made reductions like `V R +' and `M-# :' considerably faster. ** Improved parsing and display of cases like "[a + b]". ** Added `t +' and `t -' for doing business date arithmetic. ** Added "syntax tables," the opposite of compositions. ** Added another Rewrites Tutorial exercise. ** Added the "vmatches" function. ** Added the `Modes' variable and `m g' command. ** Improved `u s' to cancel, e.g., "11 mph hr / yd" to get a number. ** Added "quick units" commands "u 0" through "u 9". ** Moved `M-%' to calc.el to avoid autoloading problems. ** Added `M-=' during algebraic entry, acts like `RET ='. ** Made `LFD' prevent evaluation when finishing a calc-edit command. ** Changed calc-store commands to use `t .' mode for trail display. ** Improved integrator to understand forms involving "erf". ** Fixed parser to make sense of "[1....1e2]" input. ** Fixed FORTRAN parser to treat a(i,j) as a_i_j if a is declared matrix. ** Got rid of some version number stamps to reduce size of patches. ** Fixed a bug in defmath treating "<=" and ">=" predicates. ** Fixed a bug in which Calc crashed multiplying two date forms. ** Fixed a bug in line breaker that crashed for large, nested formulas. ** Fixed a bug using ` to edit string("foo"). ** Fixed a bug where `M-# y' in Big mode copied stack level number. ** Fixed a bug where `g O' used wrong default directory, no completion. ** Fixed a bug where "foo_bar(i)" parsed in C mode but showed as foo#bar. ** Fixed several bugs where large calculations got "computation too long." * Version 2.01: ** Added percentage commands `M-%', `b %', and `c %'. ** Changed Big mode to force radix-10 in superscripts. ** Improved display of fractions in various language modes. ** Changed `a n' to work properly with equations and inequalities. ** The problem with cross references to Index nodes in TeX has been fixed. ** Fixed a bug where recursive esc-maps make calc-ext/-aent unloadable. ** Fixed a bug in `M-# k', then `OFF' right away, with fresh Emacs. ** Fixed a bug in which "S_i_j" was formatted wrong after `j s'. ** Fixed a bug in which `h k u c' positioned cursor on wrong line. ** Fixed a bug where `z ?' crashed if `z %' was defined. ** Fixed a bug in `j O' (calc-select-once-maybe). ** Fixed "make private" not to ask "Delete excess versions" and crash. * Version 2.00: ** First complete posting of Calc since 1.01. ** Most parts of Calc have seen changes since version 1.07. See section "New for Calc 2.00" in the manual for a summary. ** Changed to compile calc-macs/-maint, to allow "cp *.elc new-dir". ** Improved calc-describe-bindings to avoid showing redundant ESC maps. * Version 2.00 beta 3: ** Removed version numbers from most .el files to reduce size of patches. ** Added a "calc-version" command. ** Changed `M-# ? ?' to allow for modified describe-function. ** Changed date parser to accept "Sept" as an alternative for "Sep". ** Inhibited answers to exercise from showing up in table of contents. ** Changed Makefile to say "texindex calc.[cfkptv]?" to avoid "calc.el". ** Fixed up the Makefile in various other ways. ** Rearranged banner at top of `h h' command's output. ** Changed "make summary" to print "Calc Summary" on the title page. ** Added "IntegSimpRules". ** Added `M-# :', `M-# _', and `M-# Z' options. ** Changed `^' to evaluate "[-3..-1]^-2" properly. ** Improved `f g' to give symbolic answers for, e.g., 101:2 and -3:2. ** Fixed a bug where `h k RET' didn't find the right place on the page. ** Fixed a bug that formatted "x*(y ? a : b)" as "x y ? a : b". ** Fixed a bug where defmath translated (< x 0) as (math-posp x)! ** Fixed a bug that prevented quick-calc from working sometimes. ** Fixed the `z ?' bug again (maybe this time for good?). ** Fixed a bug in which `V ^' (vint) was just plain wrong, wrong, wrong! ** Scanned for and fixed remaining bugs relating to autoloading. * Version 2.00 beta 2: ** Changed "make info" to try "make texinfo" if "makeinfo" not found. ** Changed to "New for Calc 2.00"; texinfo.tex chokes on apostrophes. ** Added List Tutorial Exercise 14 (just in case there weren't enough!). ** Added a discussion of the `Z F' command to the Programming Tutorial. ** Improved `H a f' not to lose info if input is partially pre-factored. ** Improved simplification of expressions like sqrt(3) + 3^3:2. ** Changed Big mode to omit "*" in expressions like 2 sqrt(3) 5^3:4. ** Replaced European date format D/M/Y with D.M.Y. ** Changed `a N' and `a X' to consider the endpoints of the interval. ** Fixed a bug where TeX mode made c*(1+a/b) look like a function call. ** Fixed a bug formatting top-level evalto's while using selections. ** Fixed a bug that caused `z ?' to crash. ** Fixed a bug where `Z F' broke for argument names "t" and "nil". ** Fixed several bugs relating to autoloading. * Version 2.00 beta 1: ** Added "What's new in Calc 2.00" to the manual (summary of info below). ** Added support for many GNUPLOT 3.0 features. ** Tweaked the Makefile and calc-compile a bit more. ** Modified to work with Zawinski's/Furuseth's optimizing byte compiler. ** Modified Calc to garbage-collect less often (raised gc-cons-threshold). ** Changed quick-calc to avoid autoloading so many parts of Calc. ** Changed Calc subfiles to work properly if not byte-compiled. ** Renamed `M-# s' to `M-# j', made `M-# s' be equivalent to `h s'. ** Changed calc-quit to avoid reapportioning space among other windows. ** Added `M-DEL' (calc-pop-above) key, to DEL as LFD is to RET. ** Added `{' and `}' to scroll vertically, analogous to `<' and `>'. ** Added `m t' for "total" algebraic mode. ** Added `d , \' option to group digits with "\,". ** Improved support of "prime" accent in "eqn" language mode. ** Changed macedit's read-kbd-macro to accept a string argument in Lisp. ** Changed calc-check-defines to use a more concise run-hooks linkage. ** Changed auto-why mode not to say [w=more] if next msg is not urgent. ** Made `a d' able to differentiate "a?b:c" and "a_i" formulas. ** Changed probability dist. functions to work with `a f' and `a d'. ** Added special constants "phi" and "gamma". ** Added "poly" function, simpler cousin of "gpoly". ** Added "pdeg", "plead", "pcont", "pprim"; cleaned up "pdiv" and "pgcd". ** Added `a p' command for polynomial interpolation. ** Added `a I' command for numerical integration; made IntegLimit variable. ** Added `a f' to factor polynomials; moved old `a f' to `a "'. ** Added `a a' to do partial fraction decompositions. ** Improved `a i' to integrate many more kinds of formulas. ** Modified `a P' to find numerical roots of high-degree polynomials. ** Modified `c 0' through `c 9' to convert int-valued floats to integers. ** Made sinh, arctanh, etc., expandable into exps/logs by `a f'. ** Added more algebraic simplifications having to do with logs and exps. ** Changed `s s', `s t', `s x', `s l' to accept an equation at prompt. ** Changed `s i' not to store Decls if its value is the default, []. ** Changed `s i' to store in `d O' language mode if in Normal or Big mode. ** Rearranged `V M'/`V R' matrix mapping modes. ** Added <#1+#2> notation for lambda expressions. ** Extended `b l' and other binary shifts to have a 2-argument version. ** Changed `u c' and `u t' to give unitless result for unitless input. ** Changed sqrt(1-cos(x)^2)-to-sin(x) to be an unsafe simplification. ** Improved simplification of sqrts, e.g., sqrt(a^2 x + a^2 y). ** Changed solver to treat (x-a)(x-b)(x-c) more intelligently. ** Changed Pascal language mode to use "$FFFF" for hexadecimal numbers. ** Added support for non-decimal display of floats. ** Changed `p' to refresh stack display if current float format uses it. ** Changed Big mode to use subscript notation for log10(x), log(x,b), r#nnn. ** Changed Big mode to format deriv(u,x) and tderiv(u,x) as du/dx. ** Changed Big mode to format integ(1/x,x) as "dx/x" instead of "1/x dx". ** Added "tty" output type for graphics commands. ** Documented Calc's random number generation algorithm in the manual. ** Fixed a bug involving having "(setq calc-timing t)" in .emacs. ** Fixed a bug that incorrectly parsed "|x| - 1" in TeX mode. ** Fixed bugs and made improvements in `a R' when widening the guess. ** Fixed a bug that where `a S' didn't solve (x - a)^2 = (x - b)^2. ** Fixed a bug that sometimes crashed `a P' on systems of equations. ** Fixed a bug that prevented `b p' (calc-pack-bits) from working. ** Fixed some bugs in which certain functions didn't get autoloaded. ** Fixed a bug in which the date <1/1/13> was incorrectly parsed. ** Fixed a bug which prevented `j D' from expanding (a+b)/c. ** Fixed a bug in solver: bad inverses for sinh and cosh. ** Fixed a bug in math-possible-signs that failed for x*0. ** Fixed a bug where sqrt(-a) was rewritten sqrt(a)*i even if a<0. ** Fixed a bug in line breaker when first "word" of line was too long. ** Worked around a makeinfo bug that handled @end group/@group badly. * Version 2.00 alpha 3: ** Changed logic for locating component .elc files to be even smarter. ** Changed "make install" to "make compile"; added different "make install". ** Improved "make compile" to check file dates and compile only when needed. ** Made output of "make compile" in batch mode more compact and readable. ** Replaced "Quick Overview" in manual with "Demonstration of Calc". ** Changed to use keymaps for dispatching M-# and h prefix keys. ** Added TAGS target to the Calc Makefile. ** Removed most doc strings from functions; new help commands are better. ** Got rid of some crufty "fset" calls that were cluttering the code. ** Split calc-grab-region into two functions, calc-grab-region/-rectangle. ** Swapped positions of stack and trail in full-calc-keypad display. ** Improved line-breaking algorithm for displaying long formulas. ** Improved display of control characters in vectors shown as strings. ** Changed `d o' to allow fraction format to specify desired denominator. ** Changed `M-# y' to respect overwrite mode in target buffer. ** Added `H' prefix to display-mode commands to suppress stack refresh. ** Changed "calc-why" mechanism to display urgent messages automatically. ** Handled taking derivatives of symbolic integrals and vice-versa. ** Handled integrating vectors of formulas. ** Incorporated Ewerlid's polynomial division and GCD functions into Calc. ** Improved algebraic operations on "mod" forms, esp. polynomials. ** Added some more financial functions (sln, syd, ddb). ** Added nest, anest, fixp, and afixp (`H V R' and `H V U') functions. ** Added `a .' (calc-remove-equal) command to take apart equations. ** Generalized dfact to work for negative odd integers; added !! syntax. ** Changed `k f' to factor 1, 0, and negative integers. ** Changed `u M', etc., to accept +/- and [ .. ] forms as distributions. ** Changed `g q' to remove *Gnuplot Commands/Trail* window if present. ** Added support for Francois Pinard's "dumb terminal" driver for GNUPLOT. ** Added ":: remember" feature for rewrite rules. ** Changed rewrites to let pattern "a*b" match "x/2" with a=x, b=1/2. ** Added ability to put function names like "simplify" in rewrite schedule. ** Added "Rewrites Tutorial" to the manual. ** Changed ` to bind RET as newline instead of finish if editing a vector. ** Added some new exercises to the List Tutorial. ** Changed `Z F', `V M', etc. not to remove stored vars from def arg list. ** Added parsing for /1, 2, 3/ notation for Fortran mode vectors. ** Added a "%%" syntax for comments in formulas being read. ** Fixed a bug in which failing `h k' removed an existing Info window. ** Fixed a bug in `j /' operating on subformulas like "a + b". ** Fixed a bug in which "inf = inf" undesirably evaluated to 1. ** Fixed a bug that simplified "0 = 1 + a + 2" to "0 = a". ** Fixed a bug that failed for rewrite patterns like "fib(1 ||| 2)". ** Fixed a bug that arose because rewrite programs are non-reentrant. * Version 2.00 alpha 2: ** Changed LFD terminating algebraic entry to push in no-simplify mode. ** Changed so that `K -' interprets `-' as calc-minus, not neg prefix arg. ** Improved `h c' command to understand all Calc key sequences. ** Fixed problems with DistribRules, NegateRules, and FitRules. ** Fixed several bad node pointers in the manual. ** Fixed a bug in `h C-w' when used with makeinfo-formatted manuals. ** Fixed a bug in sqrt(-1) when Polar and HMS modes are enabled. ** Fixed/improved dscalar and deven functions; added dodd. ** Fixed a bug in polynomial handling that also affected sum(sin(k),k,1,n). ** Fixed various other glitches in the manual. * Version 2.00 alpha 1: ** Calc's tar file now creates a calc-(version) directory to unpack into. ** Calc now comes with a Makefile; install with "make install". ** Calc now comes already split into many files; installation is much simpler. ** Changed base file name of the manual from "calc-info" to "calc.info". ** Key binding for `M-# w' was documented but not implemented. ** Bound M-# ' to be synonymous with `M-# f' (used to be `M-# q'). ** Changed M-# M-# to use last interface of C or K; E no longer counts. ** Changed `i' (and `M-# i') not to return to Top node unnecessarily. ** Changed `h' to be a prefix key with various help commands. ** Changed `s' to be a prefix key with various store and recall commands. ** Keys `i', `r', and `l' are obsolete (moved to `h' and `s' prefixes). ** Rearranged `K', `X', and `M-RET' keys; `K' is now calc-keep-args. ** Changed quick-calc to display input formula as well as output if room. ** Changed quick-calc to interact with the editing buffer and kill ring. ** Created pack, unpack, unpackt function equivalents of `v p', `v u'. ** Changed to expand (a/b)^x to a^x/b^x only if b > 0 (not if a > 0). ** Changed math-possible-signs to understand sqrt function. ** Changed Z [, rewrites to consider any provably non-zero value as true. ** Changed normal language modes to accept ** as a synonym for ^. ** Added "maple" language mode. ** Changed, e.g., Mathematica "(2 + 3 I)^(1.23*10^20)" to include parens. ** Generalized math-compose-big properties for all language modes. ** Introduced "string" and other function for composing expressions. ** Changed many recursive vector routines to use loops instead. ** Added evalv, evalvn function equivalents to `=', `N'. ** Changed "expr =>" not to evaluate at all if in no-simplify mode. ** Redesigned user interface of `a F' (calc-curve-fit) command. ** Added "phase" feature to the rewrite rule system. ** Added "&&&", "|||", "!!!" to the rewrite rule system. ** Introduced a new notation for rewrites: LHS := RHS :: COND. ** Changed `a r' (but not `j r') to repeat 100 times by default. ** Integrated EvalRules more cleanly into the default simplifications. ** Added `H v l' [mdims] to measure the dimensions of a matrix. ** Changed `u c' to interpret "/units" as "1/units". ** Added `u a' to adjust unit prefix letters automatically. ** Changed `u s' to enable scalar mode while simplifying. ** Changed `c f' [pfloat] not to float integer powers or subscripts. ** Added a three-argument form for the "hms" function. ** Changed, e.g., sin(90) degrees to produce 1 instead of 1.0. ** Changed symbolic mode to prefer sqrt(int): abs([1 2 3]) => sqrt(14). ** Enhanced solver to handle, e.g., x + 1/x = a; exp(x) + exp(-x) = a. ** Enhanced simplifier to handle, e.g., exp(a+2) / e^a => e^2. ** Enhanced `a s' to simplify sqrt(x) - x^1:2 and exp(x) - e^x to 0. ** Added -(a + b) to -a - b as a default simplification. ** Added rules for differentiating sum() and prod() functions. ** Added a few more energy units (due to Przemek Klosowski). ** Added overflow/underflow checking for all floating-point arithmetic. ** Extended error forms to work with complex numbers. ** Generalized GCD to handle fractional arguments. ** Changed graphics routines to evaluate "x" values, e.g., [-pi .. pi]. ** Added `g q', like `g K' but without viewing the Gnuplot Trail. ** Changed `g p' and `V M' to display better "Working..." messages. ** Modified `M-# g' to be more robust about grabbing formulas. ** Added `Y' prefix key reserved for user-written extensions. ** Added calc-load-hook and calc-ext-load-hook. ** Prevented calc-install from leaving large ~ files behind. ** Changed @bullet to @bullet{} in manual to conform to texinfo spec. ** Rearranged some chapters in the manual to be a bit more logical. ** Added calc-split-summary command. ** Fixed several bugs in embedded mode. ** Fixed a bug in calc-vector-covariance that required a prefix arg. ** Fixed a bug that prevented parsing "a=>" with no right-hand side. ** Fixed a bug which allowed incorrectly dividing a vector by a vector. ** Fixed a bug formatting sum(...)^2 in Big mode. ** Fixed a bug that prevented Calc from deleting old graphics temp files. ** Fixed some typos calling calc-inverse-func instead of calc-invert-func. ** Fixed bugs in the derivatives of conj, deg, and rad; added re, im. ** Fixed a bug where (r;theta) parsed as r exp(theta i) even in Deg mode. ** Fixed a bug which gave wrong answer for exp of a polar complex number. ** Fixed a bug in `Z F' that failed if formula used non-arg variables. ** Fixed a bad pointer to Info node "Assignments in Embedded Mode". ** Fixed several errors in the Calc Summary. * Version 1.08 beta 1: ** Calc's copyright has been assigned to FSF, for inclusion in Emacs 19! ** Changed M-# to be a two-key sequence; use M-# M-# to start Calc now. ** Rewrote and expanded the introductory chapter of the manual. ** Added a key and function summary to the manual. ** Changed the manual to take better advantage of TeX's math formatting. ** Changed manual to be printable in @smallbook format. ** Added "calc-embedded" mode. ** Added "=>" [evalto] operator. ** Added facilities for date and date/time arithmetic. ** Added a set of financial functions (pv, fv, etc.). ** Added infinite quantities inf, uinf, and nan (plus infinite intervals). ** Added "EvalRules", "SimpRules", and "ExtSimpRules" variables. ** Added sum and product commands `a +', `a -', `a *', `a T'. ** Enhanced `a S' and `a P' to solve systems of equations. ** Enhanced solver to handle eqns like sin(x) = cos(2 x), sqrt(x) + x = 1. ** Added `a M' (calc-map-equation) command. ** Added new statistical functions: mean, standard deviation, etc. ** Added line, polynomial, and curve fitting commands (`a L' and `a F'). ** Added support for composite units, e.g., "mi+ft+in". ** Enhanced "Big" mode to format square roots, choose, and powers better. ** Enhanced "Big" mode to display fractions in large notation. ** Added several alternate formats for matrix display. ** Changed TeX mode to write "(1 + x^2)" instead of "\left(1 + x^2\right)". ** Added support for relational operators in TeX and FORTRAN modes. ** Added recognition of accents like \dot, \tilde, \underline in TeX mode. ** Added "eqn" language mode. ** Added extra control over display justification with `d <', `d =', `d >'. ** Added calc-left-label and calc-right-label (`d {', `d }'). ** Added "nn%" syntax for algebraic formulas; equivalent to "nn * .01". ** Added input syntaxes like a = b = c, a != b != c, a <= b < c. ** Changed "_" to mean subscripts; old use of "_" in vars is now "#". ** Introduced "matrix mode" and "scalar mode" (`m v'). ** Introduced generic identity matrices (idn(1)). ** Added a method for declaring variables to be real, integer, > 0, etc. ** Added `Z S' command for editing stored value of a variable. ** Added "subst" algebraic function equivalent to the `a b' command. ** Added `a f' command, changed deriv/integ/solve-for to use it. ** Improved `a s' to simplify (x + y) (y + x) to (x + y)^2. ** Improved `a s' to simplify i^2 to -1. ** Improved `a s' to simplify, e.g., sin(pi/3) in Symbolic mode. ** Improved `a s' to simplify sqrt(8) to 2 sqrt(2), 1/sqrt(2) to sqrt(2)/2. ** Moved sin(arccos(x)) from `a e' to `a s'; not unsafe after all! ** Changed (x y)^z => x^z y^z to be a usually-unsafe simplification. ** Added thorough documentation of `a s' and `a e' to the manual. ** Improved `a c' to collect "f(a)" even if "a" also appears elsewhere. ** Introduced lin, linnt, islin, islinnt functions for linearity testing. ** Improved `a x' to use binomial theorem to give simpler answers. ** Improved `j D' to distribute powers of sums: (a + b)^n. ** Improved `j M' to merge products of powers (may need no-simplify mode). ** Changed to use defvar for DistribRules etc. so `Z V' works with them. ** Improved `j *' and `j /' to work properly in a few more cases. ** Improved `V R' to use identity value when reducing empty vectors. ** Improved `v p' and `v u' to support more complex packing operations. ** Disabled automatic simplification of sqrt(2)/2 to 1/sqrt(2). ** Bound SPC and RET to press, TAB to next-menu in *Calc Keypad* buffer. ** Added C-u ' to do algebraic entry with language mode forced to normal. ** Added "$1", "$2", etc. input notation for algebraic entry. ** Changed unary operators like `n', `&' to treat neg prefix args like RET. ** Changed ` (calc-edit) to show full precision regardless of float format. ** Enhanced quick-calc to display integers in several formats. ** Documented `g H' (calc-graph-hide) command (had been left from manual). ** Enhanced floor/ceil/trunc/round in several ways. ** Added rounde and roundu functions. ** Changed `c 1' through `c 9' to change small floats to 0.0; added `c 0'. ** Enhanced set operations to work on sets of intervals. ** Fixed erf(0), utpn(x,x,y), and arccosh(-1) to work properly. ** Changed complex arctan and arctanh to follow Steele 2nd edition. ** Expanded "Branch Cuts" section of the manual with some useful tables. ** Rearranged order of words in mode line to be a bit more logical. ** Changed `m N' (num-simplify) mode to evaluate constant vectors, too. ** Changed `a r'/`j r' to prompt twice for separate LHS/RHS if necessary. ** Enhanced `let(v,x)' in rewrites by allowing arbitrary patterns for v. ** Changed cursor positioning in second prompt for `a b' (calc-substitute). ** Changed `y' to omit line numbers more consistently. ** Changed `o' (calc-realign) to reset horizontal scrolling to zero, also. ** Added "pred" mode for calc-eval. ** Added "calc-report-bug" as an alias for "report-calc-bug". ** Added `Z T' and "calc-pass-errors" to aid debugging Calc-related code. ** Added "calc-load-everything" (`m X' or `M-# L') command. ** Enhanced calc-install to pre-build units table, CommuteRules, etc. ** Changed Calc to interact more gracefully with load-path. ** Changed Lisp Variable Index in manual to include user variables, too. ** Fixed a bug that prevented calc-install from working under VMS. ** Fixed a bug that sometimes crashed rewrites dealing with subtractions. ** Fixed a bug that prevented `a S' from solving "3 - x = 1 + x"! ** Fixed a bug in solver that crashed for certain cubics and quartics. ** Fixed a bug in calc-simplify that crashed for equations and ineqs. ** Fixed a bug which placed the "[" oddly in `d B' + `v /' mode. ** Fixed a bug where finishing calc-edit improperly obeyed language mode. ** Fixed a bug formatting (-1)^n in Big mode after selection commands. ** Fixed a bug that got ">=" and "<=" backwards in rewrite conditions. ** Fixed a bug that broke the `"x"' key in calc-keypad mode. ** Fixed a bug in which `MAP$' in calc-keypad didn't display "Working...". ** Fixed a bug where matrix division gave bad result for singular matrix. ** Fixed a bug which closed Calc window if calc-grab-region got an error. ** Fixed a bug where `a s' failed on formulas containing dimension errors. ** Fixed a bug that caused `m F' to hang. ** Fixed a bug in complex arithmetic that caused problems with solver. ** Fixed a bug which raised intervals to interval powers incorrectly. ** Fixed a bug in utpp/ltpp (order of arguments did not match the manual). ** Fixed a bug in which `t y' rounded yanked data with old precision. ** Fixed a bug in which "in(3, [3 .. 3))" returned true. ** Fixed a bug which simplified abs(abs(x)) incorrectly. ** Fixed a bug in which (a^2)^1:3 was unsafely simplified to a^2:3. ** Fixed a bug in rewrite system which missed pattern "2 sin(x) cos(x)". ** Fixed a bug in rewrite system which missed pattern "a - a cos(x)^2". ** Fixed obsolete trail tags gsmp, gneg, ginv to jsmp, jneg, jinv. ** Fixed some errors and made improvements in units table [Ulrich Mueller]. * Version 1.07: ** Added `m F' (calc-settings-file-name) command. ** Added calc-autoload-directory variable. ** Extended Z ` to accept a prefix argument. ** Added keystrokes (v h, v k) for head, tail, cons. ** Extended `v e' to accept a vector as the filler. ** Changed `V M', `V R' to accept mapping-mode keys in uppercase, too. ** Changed V M ' etc. to accept $, $$, ... as argument indicators. ** Changed `t y' to accept a prefix argument. ** Put in a cleaner and safer random number generator for `k r' et al. ** Fixed a bug which completely broke `a r' command! ** Fixed "0 * matrix" to generate a zero matrix instead of 0. ** Fixed a bug in `a R' which sometimes caused it to crash. ** Fixed a fatal typo in the TeX version of the manual. ** Fixed a bug that prevented C-k, C-w, M-w from working in Trail buffer. ** Fixed another bug in `Z P' command. ** Fixed a bug in `u s' which incorrectly simplified subtractions. ** Fixed an argument-name aliasing bug evaluating lambda( ) formulas. ** Fixed overfull hboxes in the manual. ** Fixed various other bugs in the manual. * Version 1.06: ** Added "calc-keypad" mode for X window system users (try it!). ** Improved "calc-eval" for calling/operating Calc from user-written Lisp. ** Moved vector accumulate command to `V U' (old `H V R' still supported). ** Added right-to-left reductions: `I V R' and `I V U'. ** Added set operations on vectors: intersect, union, diff, xor. ** Added `I v s' to remove a subvector from a vector. ** Introduced `H |' to append two vectors with no magical special cases. ** Introduced rhead, rtail, and rcons for isolating last vector element. ** Changed `g p' to keep temp files around until data actually change. ** Improved `a S' to solve many higher-order polynomial equations. ** Added `a P' to produce a vector of all solutions to an equation. ** Enhanced `a v' and `j v' to allow top-level-only evaluation. ** Changed `j DEL' to delete a side of an eqn or ineq, leaving other side. ** Fixed binding for keys `j 1' through `j 9'. ** Introduced "let" marker in rewrite rules. ** Enhanced the "sign" function to provide a two-argument version. ** Changed "max-specpdl-size exceeded" error message to be user-friendly. ** Put "" in the trail in above case and when user presses C-g. ** Changed TeX mode to generate \ldots instead of \dots, recognize both. ** Changed "sin(0)" etc. (for integer 0) to generate "0" instead of "0.". ** Enhanced Programming Tutorial exercise 2. ** Fixed an error in the answer to Types Tutorial exercise 3. ** Fixed several bugs relating to head, tail, and cons functions. ** Fixed some other minor typos in the manual. ** Fixed several bugs in `Z P' (calc-user-define-permanent). ** Fixed several bugs that broke the `g P' command. * Version 1.05: ** Created a calc-install command to ease installation. ** Added lots of exercises to the Tutorial section of the manual. ** Added ability to select and operate on sub-formulas. ** Substantially improved the algebraic rewrite-rule system. ** Added a set of graphing commands that use GNUPLOT. ** Added a command (`a R') for finding numerical roots to equations. ** Added several new math functions, such as erf and Bessel functions. ** Added key bindings for miscellaneous commands using the "f" prefix key. ** Added lots of new vector operations, many of them in the spirit of APL. ** Added more control over vector display, including an abbreviated mode. ** Improved keyboard macro editing; added read-kbd-macro to macedit.el. ** Introduced the `m S' (calc-shift-prefix) command. ** Enhanced the calc-edit command in several ways. ** Made it possible to hit ` (calc-edit) during numeric/algebraic entry. ** Enhanced the calc-solve-for command to handle inequalities. ** Enhanced calc-simplify to handle equations and inequalities. ** Taught log10 and log to look for exact integer or rational results. ** Added ability to take Nth roots directly. ** Added "increment" and "decrement" commands for integers and floats. ** Added "full-help" command, changed "h" key to invoke it. ** Added special help for Inverse and Hyperbolic prefixes. ** Added an optional prefix argument to `o' (calc-realign). ** Changed `t s' and `t r' to use RET as the search exit key. ** Made handling of operator keys for V M, V R, etc. more regular. ** Improved TeX mode; added support for \matrix format. ** Added a variant of `m a' mode that only affects ( and [ keys. ** Fixed "Mismatch" message for algebraic entry of semi-open intervals. ** Trimmed fat from calc.el to speed loading, moved more to calc-ext.el. ** Fixed a bug in which minibuffer entry rounded to out-of-date precision. ** Fixed a bug which crashed Calc 1.04 under Epoch. ** Fixed a bug which messed up Calc Trail's mode line, among other things. ** Fixed a bug which caused trail ">" to show only when in Trail buffer. ** Fixed a bug in which "calc" called "calc-grab-region" with too few args. ** Fixed bugs in both implementation and documentation of calc-perm. ** Fixed a bug in which calc-simplify-extended always used radians. ** Fixed a bug where calc-comma failed to override "polar" mode. ** Fixed a bug doing mixed arithmetic on rectangular+polar complex numbers. ** Fixed several bugs in transcendental functions with complex arguments. ** Fixed a bug in which `a s' simplified "x / .5" to ".5 x". ** Fixed numerous other bugs in various parts of Calc. ** Completed the "Hooks" section of the "Internals" chapter of the manual. * Version 1.04: ** Included a copy of revision history (from README) in calc.el. ** Added the "calc-split" feature to split calc-ext.el into smaller bits. ** Changed calc-unpack to unpack floats and fractions, too. ** Added "mant", "xpon", and "scf" functions for decomposing floats. ** Fixed a bug in the "y" command with positive prefix arguments. ** Rearranged binary shift/rotate command keys to be a bit more convenient. ** Fixed a bug in which simplifying "(0/0) * 2" crashed with a Lisp error. ** Made `H F' [ffloor] and friends faster for very large arguments. ** Made calc-define-del more robust. ** Handled pasting of data into the Calculator using the mouse under X. ** Made overlay-arrow variables buffer-local to avoid interference. ** Fixed a problem in which Calc Trail buffer got stuck after a C-x C-w. * Version 1.03: ** Changed math-choose to compute n-choose-m faster when m is large. ** Fixed some problems with TeX mode. ** Fixed a bug that prevented `b s' from working without a prefix argument. ** Added "calc-eval" function. ** Improved calc-grab-region. * Version 1.02: ** Fixed a bug in Tutorial: telephone pole height/distance were switched! ** Fixed a few other things in the manual. ** Added "full-calc" command. ** Added "calc-insert-variables" (`Z I') command. ** Quick Calc now works even if you are already in the minibuffer. ** Fixed a bug in math-mul-bignum-digit which affected math-and, etc. ** Definition of "Hectares" was wrong in units table. ** Fixed a bug in calc-execute-kbd-macro concerning undo and refresh. ** Bound "calc-undo" to `C-x u' as well as `C-_' and `U'. * Version 1.01: ** Added a tutorial section to the manual. ** Next and Prev for node Strings in the manual were reversed; fixed. ** Changed "'bignum" in calc-isqrt-bignum-iter to "'bigpos". ** Fixed a bug that prevented "$" from working during algebraic entry. ** Fixed a bug caused by an X (last-X) command following a K (macro) cmd. ** Fixed a bug in which K command incorrectly formatted stack in Big mode. ** Added space between unary operators and non-flat compositions. (Otherwise, "-(a/b)" in Big mode blended the minus sign into the rule!) ** Fixed formatting of (-1)^n in Big mode. ** Fixed some problems relating to "not" operator in Pascal language mode. ** Fixed several bugs relating to V M ' and V M $ sequences. ** Fixed matrix-vector multiplication to produce a vector. ** Introduced Z ` ... Z ' commands; renamed old Z ' to Z #. ** Fixed various other bugs. ** Added calc-settings-file variable suggested by C. Witty. * Version 1.00: ** First official release of Calc. ** If you used the Beta test version (0.01), you will find that this version of Calc is over 50% larger than the original release. General areas of improvement include much better algebra features; operations on units; language modes; simplification modes; interval arithmetic; vector mapping and reduction. Other new commands include calc-fraction and calc-grab-region. The program has been split into two parts for faster loading, and the manual is more complete. 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