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From: Dan Gildea <dgildea@us...>  20080419 21:43:40

Update of /cvsroot/maxima/maxima/src In directory sc8prcvs16.sourceforge.net:/tmp/cvsserv26015/src Modified Files: trigi.lisp Log Message: src/trigi.lisp: o remove calls to expand from piargs code (keep core simplifier fast, let user control whether to expand terms) tests/rtest9a.lisp: o add expand flag for tests: declare(j,integer,e,even,o,odd); sin(x+(e+1/2)*%pi),expand; => cos(x)$ sin(x+(o+1/2)*%pi),expand; => cos(x)$ Index: trigi.lisp =================================================================== RCS file: /cvsroot/maxima/maxima/src/trigi.lisp,v retrieving revision 1.30 retrieving revision 1.31 diff u d r1.30 r1.31  trigi.lisp 13 Apr 2008 18:15:42 0000 1.30 +++ trigi.lisp 19 Apr 2008 21:43:30 0000 1.31 @@ 468,7 +468,7 @@ (let ($float coeff ratcoeff zlrem) (setq ratcoeff (getconstorintterms x '$%pi) coeff (linearize ratcoeff)  zlrem ($expand (m x (m* '$%pi ratcoeff)))) + zlrem (getnotconstorintterms x '$%pi)) (cond ((zerop1 zlrem) (%piargs coeff ratcoeff)) ((not (mevenp (car coeff))) nil) ((equal 0 (setq x (mmod (cdr coeff) 2))) (consexp '%sin zlrem)) @@ 487,25 +487,39 @@ (when (funcall pred term) (list term))) (cdr form)) simpflag) (if (funcall pred form) form 0)))  + +;; collect terms of form A*var where A is a constant or integer. +;; returns sum of all such A. +;; does not expand form, so does not find constant term in (x+1)*var. +;; thus we cannot simplify sin(2*%pi*(1+x)) => sin(2*%pi*x) unless +;; the user calls expand. this could be extended to look a little +;; more deeply into the expression, but we don't want to call expand +;; in the core simplifier for reasons of speed and predictability. (defun getconstorintterms (form var)  (filtersum (lambda (term) (or ($constantp term)  (maximaintegerp term)))  ($expand (coefficient form var 1)) 0)) + (coeff + (filtersum (lambda (term) + (let ((coeff (coeff term var 1))) + (and (not (zerop1 coeff)) + (or ($constantp coeff) + (maximaintegerp coeff))))) + form + 0) + var 1)) + +;; collect terms skipped by getconstorintterms +(defun getnotconstorintterms (form var) + (filtersum (lambda (term) + (let ((coeff (coeff term var 1))) + (not (and (not (zerop1 coeff)) + (or ($constantp coeff) + (maximaintegerp coeff)))))) + form + 0)) (defun hasconstorintterm (form var) "Tests whether form has at least some term of the form a*var where a  is constant (as measured by constantp)"  (let ((lincoeff ($coeff ($expand form) var)))  (or  (and (mplusp lincoeff)  (findif (lambda (term) (or ($constantp term)  (maximaintegerp term) ))  (cdr lincoeff)))  (and (not (zerop1 lincoeff))  (or ($constantp lincoeff)  (maximaintegerp lincoeff))))))  + is constant or integer" + (not (zerop1 (getconstorintterms form var)))) (defmfun simp%tan (form y z) (oneargcheck form) @@ 567,7 +581,7 @@ ;; remainder (TODO: computing zlrem could probably be prettier.) (let* ((niceterms (getconstorintterms x '$%pi)) (coeff (linearize niceterms))  (zlrem ($expand (sub x (mul2 '$%pi niceterms)))) + (zlrem (getnotconstorintterms x '$%pi)) (sinofcoeffpi) (cosofcoeffpi)) (cond @@ 654,7 +668,7 @@ (prog ($float coeff ratcoeff zlrem) (setq ratcoeff (getconstorintterms x '$%pi) coeff (linearize ratcoeff)  zlrem ($expand (m x (m* '$%pi ratcoeff)))) + zlrem (getnotconstorintterms x '$%pi)) (return (cond ((and (zerop1 zlrem) (setq zlrem (%piargs coeff nil))) (div 1 zlrem)) ((not (mevenp (car coeff))) nil) ((equal 0 (setq x (mmod (cdr coeff) 2))) (consexp '%csc zlrem)) @@ 827,7 +841,7 @@ (div 2 (add (power '$%e arg) (power '$%e (mul 1 arg))))))) (defun coefficient (exp var pow)  (coeff (expand1 exp 1 0) var pow)) + (coeff exp var pow)) (defun mmod (x mod) (cond ((and (integerp x) (integerp mod)) @@ 846,7 +860,7 @@ (and (not (zerop1 exp)) (zerop1 (sub exp (mul var (coeff exp var 1)))))) (defun linearp (exp var)  (and (setq exp (islinear (expand1 exp 1 0) var)) (not (equal (car exp) 0)))) + (and (setq exp (islinear exp var)) (not (equal (car exp) 0)))) (defmfun mminusp (x) (= 1 (signum1 x))) 
From: Dan Gildea <dgildea@us...>  20080419 21:43:36

Update of /cvsroot/maxima/maxima/tests In directory sc8prcvs16.sourceforge.net:/tmp/cvsserv26015/tests Modified Files: rtest9a.mac Log Message: src/trigi.lisp: o remove calls to expand from piargs code (keep core simplifier fast, let user control whether to expand terms) tests/rtest9a.lisp: o add expand flag for tests: declare(j,integer,e,even,o,odd); sin(x+(e+1/2)*%pi),expand; => cos(x)$ sin(x+(o+1/2)*%pi),expand; => cos(x)$ Index: rtest9a.mac =================================================================== RCS file: /cvsroot/maxima/maxima/tests/rtest9a.mac,v retrieving revision 1.6 retrieving revision 1.7 diff u d r1.6 r1.7  rtest9a.mac 23 May 2007 13:30:48 0000 1.6 +++ rtest9a.mac 19 Apr 2008 21:43:31 0000 1.7 @@ 24,9 +24,9 @@ 2*cos(2*x)+x+1$ declare(j,integer,e,even,o,odd); done$ sin(x+(e+1/2)*%pi); +sin(x+(e+1/2)*%pi),expand; cos(x)$ sin(x+(o+1/2)*%pi); +sin(x+(o+1/2)*%pi),expand; cos(x)$ (linel:500,diff(exp(x^2+y)/(x+y),x,2)); 4*x^2*%e^(y+x^2)/(y+x)+2*%e^(y+x^2)/(y+x)4*x*%e^(y+x^2)/(y+x)^2 +2*%e^(y+x^2)/(y+x)^3$ 
From: Robert Dodier <robert_dodier@us...>  20080419 21:08:14

Update of /cvsroot/maxima/maxima In directory sc8prcvs16.sourceforge.net:/tmp/cvsserv11934 Added Files: Tag: RELEASE5_15_0BRANCH ChangeLog5.15.0 Log Message: Change log for Maxima 5.15.0 (already added to main trunk).  NEW FILE: ChangeLog5.15.0  Maxima 5.15.0 change log Compiled 20080405 Backwardsincompatible changes: * Disable verb => numerical evaluation scheme for math functions Major changes: * User interface Imaxima now packaged with Maxima New items in share: * share/contrib/bitwise: Bitwise operations on integers * share/contrib/noninteractive: Catch asksign and askprop questions and turn them into conditional expressions * share/contrib/namespaces: A namespace implementation for Maxima * share/contrib/amatrix: Matrix with underlying Lisp array Other revisions: * gf package: New version of gf package (Galois fields) * tex function: Enable TeX output to output stream * stringproc package: Revised printf; regex functions * ezunits package: Dimensional analysis; physical constants * quadpack functions: Return partiallyevaluated expressions * plot functions: New options; bug fixes * tensor functions: Many improvements * graphs package: Improvements Bug fixes: * 1924837: integration error * 1905668: blockmatrixp(matrix()) > true * 1901199: a polynomial that puts factor() into an infinite loop * 1900843: Sign of diff(bessel_k(n,x),x) is wrong * 1858797: Do not use the option a for cp(1) in extract_categories.sh * 1848704: no way to convert log(product(...)) to sum(log(...)...) * 1848131: integrate fails in sign though integrand is real * 1845375: factcomb() in 5.13.0 gives wrong result * 1821240: set_partitions documentation * 1818645: Compiled maxima code containing $ARRAY gets a Lisp error * 1753971: specint gives lisp error * 1726148: maybe with prederror : true * 1515712: tlimit (x*atan(x)/(x+1),x,inf) => 3 %pi/2, etc * 1407378: polarform returns a rectangular expression for float argument * 1313987: another quotient by zero bug (GCD problem) * 1051437: Trig integral error * 902757: taylor(x,[x],inf,...) garbage * 887174: genmatrix/lambda translate problem * 831445: gcd/subres  another case * 807275: Taylor Illegal log kernel: log(cos(th)) @ %pi/2 * 789059: simpexpt problem: sign called on imag arg * 783668: Missing documentation entries and index entries * 686819: genmatrix bug / fix * 657382: defint/limit infinite loop * 604850: pade produces an error when taylor expr is freeof variable * various other bugs 
From: Robert Dodier <robert_dodier@us...>  20080419 20:44:25

Update of /cvsroot/maxima/maxima In directory sc8prcvs16.sourceforge.net:/tmp/cvsserv30160 Added Files: ChangeLog5.15.0 Log Message: Change log for Maxima 5.15.0.  NEW FILE: ChangeLog5.15.0  Maxima 5.15.0 change log Compiled 20080405 Backwardsincompatible changes: * Disable verb => numerical evaluation scheme for math functions Major changes: * User interface Imaxima now packaged with Maxima New items in share: * share/contrib/bitwise: Bitwise operations on integers * share/contrib/noninteractive: Catch asksign and askprop questions and turn them into conditional expressions * share/contrib/namespaces: A namespace implementation for Maxima * share/contrib/amatrix: Matrix with underlying Lisp array Other revisions: * gf package: New version of gf package (Galois fields) * tex function: Enable TeX output to output stream * stringproc package: Revised printf; regex functions * ezunits package: Dimensional analysis; physical constants * quadpack functions: Return partiallyevaluated expressions * plot functions: New options; bug fixes * tensor functions: Many improvements * graphs package: Improvements Bug fixes: * 1924837: integration error * 1905668: blockmatrixp(matrix()) > true * 1901199: a polynomial that puts factor() into an infinite loop * 1900843: Sign of diff(bessel_k(n,x),x) is wrong * 1858797: Do not use the option a for cp(1) in extract_categories.sh * 1848704: no way to convert log(product(...)) to sum(log(...)...) * 1848131: integrate fails in sign though integrand is real * 1845375: factcomb() in 5.13.0 gives wrong result * 1821240: set_partitions documentation * 1818645: Compiled maxima code containing $ARRAY gets a Lisp error * 1753971: specint gives lisp error * 1726148: maybe with prederror : true * 1515712: tlimit (x*atan(x)/(x+1),x,inf) => 3 %pi/2, etc * 1407378: polarform returns a rectangular expression for float argument * 1313987: another quotient by zero bug (GCD problem) * 1051437: Trig integral error * 902757: taylor(x,[x],inf,...) garbage * 887174: genmatrix/lambda translate problem * 831445: gcd/subres  another case * 807275: Taylor Illegal log kernel: log(cos(th)) @ %pi/2 * 789059: simpexpt problem: sign called on imag arg * 783668: Missing documentation entries and index entries * 686819: genmatrix bug / fix * 657382: defint/limit infinite loop * 604850: pade produces an error when taylor expr is freeof variable * various other bugs 