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Diff for /OpenXM_contrib/pari-2.2/Attic/CHANGES between version 1.1 and 1.2

version 1.1, 2001/10/02 11:16:55 version 1.2, 2002/09/11 07:26:37
Line 12  DS = Denis Simon
Line 12  DS = Denis Simon
 GH = Guillaume Hanrot  GH = Guillaume Hanrot
 GN = Gerhard Niklasch  GN = Gerhard Niklasch
 GT = Glenn Thobe  GT = Glenn Thobe
   GTo= Gonzalo Tornaria
 HC = Henri Cohen  HC = Henri Cohen
 IS = Igor Schein  IS = Igor Schein
 IK = Iwao Kimura  IK = Iwao Kimura
   ISo= Ignat Soroko
 IZ = Ilya Zakharevich  IZ = Ilya Zakharevich
 KO = Kiyoshi Ohgishi  KO = Kiyoshi Ohgishi
 LG = Louis Granboulan  LG = Louis Granboulan
 MD = Mark Dickinson  MD = Mark Dickinson
 MS = Michael Stoll  MS = Michael Stoll
   MSo= Michael Somos
   MW = Mark Watkins
 OR = Olivier Ramare  OR = Olivier Ramare
 OV = Oliver Voigt  OV = Oliver Voigt
 PM = Peter Montgomery  PM = Peter Montgomery
Line 29  TP = Thomas Papanikolaou
Line 33  TP = Thomas Papanikolaou
 XR = Xavier Roblot  XR = Xavier Roblot
 YU = Yoshiaki Uchikawa  YU = Yoshiaki Uchikawa
   
   Done for version 2.2.4 (released ??/07/2002) [hopefully]:
     Fixed
       1- add default 'new_galois_format' to make 2.2.3 C-22 optional (by default,
          old format will be used, preserving compatibility)
    BA 2- FreeBSD: DL_DFLT_NAME value was incorrect
       3- Configure: TIOCGWINSZ not detected on Linux
    BA 4- FpV_roots_to_pol not reduced when applied to a singleton
       5- (a.x = [a]); "a".x ---> [a]  \\ should be ["a"]
       6- (a.x = [a]); print("a".x) ---> a0.E-28x  \\ should be ["a"]
       7- (a.x = [a]); 1.x ---> error \\ should be [1]
       8- wrong rnfidealnorm[rel | abs] (wrong result if O_L not free O_K-module)
       9- gcd(x + 1, x + 1/2) --> 1 \\ should be 1/2  [introduced in 2.2.1]
      10- gcd for multivariate polynomials over finite fields slower than
          in characteristic 0
      11- [library:] typo in vpariputs: pariputsf("%Z%Z",x,y) did not work
          (prints x and address of y)
   IZ 12- [gnuplot + dynamic link:] allow building even when dlopen() not available
      13- [CVS:] warnings about unknown files (added .cvsignore files)
      14- f()=return \\ return "void"
          g()=return(f()) \\ return eval("void") = 0
          now g() returns "void" also
      15- f(x=11,y=x)=local(t=ff(),u=t);1 --> parse error
      16- conjvec([[],[],[]]) --> SEGV
      17- galoisisabelian(x) --> SEGV
      18- nfeltreducemodpr(nfinit(x),1,1) --> SEGV
      19- idealmul(nf, principal ideal, prime ideal) returned wrong result
          [introduced sometime in 2.2]
      20- elltors(ellinit([...], 1)) --> SEGV
      21- try to make sure life of GP variables is not too short. Was:
            v = [0,0]; v + [v=0,v=0] --> SEGV
            u = Mod(x*Mod(1,2),polcyclo(25)*Mod(1,2)); sum(i=1,4,u=u^32) --> SEGV
      22- typo in to_Fp_simple [ bnfcertify(bnfinit(x^2-40!)) --> type error ]
      23- memory leak in gp when handling '&' arguments
      24- removed hack in gcopy [ did not reset the isclone() flag because
          gunclone checks isonstack(). But other routines may want to use it ].
      25- apparent oo loop in bnfcertify [when computing lower bound for
          regulator]
      26- ideallistarch(nfinit(x),[1,1],0); --> SEGV [bad input]
      27- factor(x-I) --> x - #<16382>
      28- ellsigma(...,matid(1)) --> SEGV [bad input]
      29- ideleprincipal([],1) --> SEGV [bad input]
      30- factorback(matid(1),nfinit(x)) --> SEGV [bad input]
      31- incomplete help message for vecsort
      32- polredabs fails to reduce
            x^8-2*x^7-34*x^6+78*x^5+265*x^4-628*x^3-389*x^2+1237*x-449
          [typo in chk_gen_init: skipfirst not initialized properly]
   MW 33- (recent) typo in localred (char 2)
      34- 2.2.3-C20 had broken backward compatibility: restore
          [inefficient, useless] previous output of nfelt*modpr routines
      35- idealappr(nfinit(y),matid(2),1) --> SEGV  [bad input]
      36- sqrtn(0,...) ---> error
      37- galoisinit(x^4 + 5264*x^3 + 8034856*x^2 + 4205424384*x + 504485485632)
          --> weird error
      38- qfsign([;]) --> SEGV
   MW 39- torsion group of [0,0,0,-6648,208633] reported as C2 instead of C6
      40- bnfinit: very rare stack corruption
      41- bnfinit: used too much memory when needing huge number of relations
          [when computing fundamental units]
      42- bnrL1(bnr with conductor 1) --> SEGV
      43- "impossible inverse modulo ..." when using addprimes() + ROUND 2
   MSo44- [gp: \x] missing 'break' statement in escape()
      45- wrong bound in nf_LLL_cmbf (nffactor) [no counter example to
          the old bound, but proof was wrong anyway...]
      46- [gp:] memory leak when assigning to multidimensional arrays (x[i][j]=1)
      47- added user-friendly error message if Configure not run properly + fix
          INSTALL.tex about make gp.dbg / gp.prf
      48- matcompanion(x*y) --> weird error
      49- typos in hilbert(), e.g
            hilbert(Mod(1,2), y) --> SEGV,
            hilbert(-1+O(2^3), 12 + O(2^3)) accepted wheras 2-adic precision too
            low to decide
   BA 50- [FreeBSD:] PORTOBJFORMAT undefined by the system --> Configure fails
      51- rnfisnorm() [errors, SEGV]. Had to change the prototype.
   BA 52- Oxxx/Makefile was not compatible with BSD make.
      53- errors in files read from .gprc, containing trap() --> SEGV
      54- bezoutres(Pol(sin(x)+Pi),Pol(cos(x))) --> "bug in subresext"
      55- nfsubfields had a different output format when using galoissubfieds
      56- polcoeff(1/x, -3) --> SEGV
      57- (-2/x)/(-1/x) --> -2/-1
   BA 58- [GP internals:] trap() had an invalid prototype [DI,DI]
      59-  M[,2][1]=1 --> error; M[1,][2]=1 --> no effect  [ now <==> M[1,2]= 2 ]
      60- [GP:] newline in multiline comments /* */ was not ignored
      61- [GP:] when using default 'colors' for input at \gn>1, first debugging
          msg could be colored
   
 Done for version 2.2.1 (released ??/09/2001):    Changed
       1- remove most global variables from gp.c (put them in struct gp_data).
       2- use better bounds for size of factors in nffactor()
       3- tuning for van Hoeij's factorizer (factor + nffactor)
       4- automatic concatenation for strings: use longest match for expression.
          print("a"[1]) is not valid since "a" is not a vector
          print("a", [1])  prints  'a[1]'
   IZ  5- [gphelp:] allow uninstalled operation from $TOPDIR or $TOPDIR/Oarch
   IZ  6- [gphelp:] better error messages in case TeX compilation fails
       7- [development version:] add version number for this file to the gp
          header when using CVS
   IZ  8- [library:] unified access to diffptr (NEXT_PRIME_VIADIFF macro)
       9- buchall: re-use the same random seed when doubling prec (for units)
      10- major cleanup in thue / thueinit
      11- major improvements in rnfkummer (use elements in factored form):
          faster, give smaller elements
      12- improved quadray(D < 0) when relative degree is huge
      13- improved bnfisprincipal when class group large: use factorisation
          (+idealred) instead of arch. components (require much less precision)
      14- allow arbitrary prime degree in rnfkummer
      15- [library:] allow trapping invmoder and recovering the offending INTMOD
      16- improved factor over Z[X] for _huge_ degrees (factorizations mod p)
      17- minor change in ordering for primedec output [use cmp_prime_over_p]
      18- [library:] moved (formerly) gp-specific write* and print* to libpari
      19- nffactor: call factornf when deg(pol) << deg(nf) + remove a priori
          overlift for d-1/d-2 test [major overkill]
      20- input format to rnfisnorm() [use rnfisnorminit]
   
     Added
    BA 1- Add PARI_VERSION and PARI_VERSION_CODE to paricfg.h
    BA 2- Add pari_release at top of dft.Config.in
       3- rnfpolredabs: flag to use partial factorization
       4- [gprc:] test against VERSION number in .gprc
       5- [gprc:] multiline constructs
    IZ 6- mnemonics for flags
       7- internal flag nf_GEN_IF_PRINCIPAL to bnfisprincipal [isprincipalall]
       8- routine rnfisnorminit()
    BA 9- [Makefile:] bzdist target
      10- [library:] CATCH / TRY mechanism [ encapsulate err_catch ]
   
     Removed
       1- (useless, undocumented) macros buchgen*, buchinit*
   
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   Done for version 2.2.3 (released 10/06/2002):
   Fixed    Fixed
       1- bnrinit(bnfinit(subst(polsubcyclo(89,8),x,-x)),4) --> SEGV [make sure
       isprincipalfact is used in makecygen, even in case of precision problems]
       2- bnrisprincipal --> warning + "not an element in ..." [missing nf_FORCE]
       3- oo loop in isprincipalfact when increasing bnf precision
       4- stack corruption in ellap (LARGE p)
       5- zeta(s) destroyed the Bernoulli cache when using the functional equation
       6- oo loop in random_relation (called from bnfinit)
       7- fixed lower bound for p in nfsubfields (could get oo loop: pol never
          squarefree mod p)
       8- [Vecsmall([1, 2])][1][2][1] --> SEGV
       9- typo in t_FRAC + t_PADIC  [only numerator of t_FRAC used]
      10- factorback(t,nfinit(x)) --> SEGV
   IZ 11- shift(x > 0,, flag!=0) didn't act as the docs said [flag now ignored]
      12- lindep(Vec(x^48)) --> oo loop
      13- could get NaN in max_modulus (polroots) --> havoc later
      14- missing normalizepol() in centermod(t_POL,)
      15- [Follow-up to 2.2.2-F10] even more recent pdftex failed again
      16- not enough GC when printing a huge t_PADIC
      17- factorpadic(x*(x+1),3,10) would corrupt polx --> SEGV later
      18- delayed carry treated improperly in red_montgomery
      19- F() = 0; local(x)  ==> confusing error message
   IZ 20- OS/2: make bench didn't work [env wouldn't start shell scripts]
   BA 21- sqrtn(Mod(1,7),2,&z)-->z=1 should be -1
   HC 22- Standard transcental functions exp, sin, cos, ^, *, are now orders of
          magnitude faster for t_POL arguments of small degree.
   HC 23- fixed a severe bug in p-adic/integer addition (1+3^4+O(3^10))+3
          didn't work.
   HC 24- Corrected p-adic initell.
      25- ellj / eta (t_SER) truncated result to seriesprecision
      26- possible overflow in u_FpM_gauss (from ZM_inv)
      27- various problems with C++ compilers
      28- polredabs could fail to reduce "obvious" input, e.g x^2 + n*x + n^2
      29- gcd(x,y,1) didn't check its arguments
      30- typo in elltors: could forget a point of order 2
      31- gdivgs(t_RFRAC,x) incorrect (if numerator had denominator)
      32- serreverse(O(x) or x + O(x^2)) --> SEGV
      33- dbltor(0) returned 2^-308, instead of 10^-308
      34- precision problems in thue/thueinit
          setrand(5);tnf=thueinit(x^3 + x^2 - 43690*x - 3529208) --> error in mplog
      35- typo in bnfnarrow ("impossible inverse")
      36- subst(x,x^0,x) --> floating point exception
   ISo37- many typos in the documentation
      38- [DOS/Windows]: incorrect conversion between 'double' and t_REAL
      39- polrootspadic(4*x^2-1,2,2) --> impossible inverse: Mod(2, 16).
          [specific to 2, and non-monic equations]
      40- discrepancy between bnfsunit output and docs [ bnfS[5][2] was t_MAT ]
      41- matdet: pivoting strategy incorrectly chosen ("incorrect type in gexpo")
      42- polcompositum output ordering depended on random seed
      43- plotrecthraw(0,[0]) --> SEGV
      44- plothraw([],[]) --> SEGV
   IZ 45- ix86 inline assembler compilation problem [divll]
   XR 46- forgotten case in Round4 [ nfdisc(x^12-10*x^11-57*x^10+740*x^9+353*x^8-16130*x^7+17749*x^6+100120*x^5-108466*x^4-292200*x^3+128380*x^2+380800*x+133112)
   --> impossible inverse: Mod(2, ...) ]
      47- sin(1e-100) ---> 9.999999999999999999735998397 E-101 [ precision loss ]
      48- idealpow(nf,x, n < 0, 1) did not reduce the result
      49- gcd(0, -1) --> -1, content([0, Pi]) --> 3.14, content([0,Pi,Pi]) --> 1
   BA 50- compilation problem on OSF (RTLD_GLOBAL undefined)
   BA 51- [X-Windows] hi-res plot: window not redrawn properly (BackingStore pb)
      52- problems with tex2mail output (wrong alignment, wrong colors)
      53- contfrac(sin(Pi/4),,2) --> impossible assignment
      54- infinite recursion in gaffect(t_POL, scalar)
      55- content([-1]) was -1 [ should be 1 ]
      56- stack corruption in u_FpV_polint (used by modular bivariate resultant)
      57- polroots() used too high a precision when checking errors a posteriori
          (--> slow)
      58- contfrac(1/x) --> SEGV
      59- typo in sinh(0) --> wrong zero exponent
      60- exp(O(x^-1)) = O(x^(-1))  [ouch...]
      61- dilog(O(x^10)) = O(1)
      62- cosh(O(1)) --> division by 0
      63- sqrt(4*x^2) --> not an integer exponent for non invertible series in gpow
      64- besselj(0,O(1)) [or besseli] --> precision<=0 in gprec.
      65- O(1)' --> O(x^-1)
      66- gcd(O(2^1), O(2^10)) --> O(2^10)
      67- polrootspadic(x^2+8*x+4,2,2) -->  "impossible assignment"
      68- one could write() an object to a binary file, corrupting it
   MW 69- ellap(ellinit([0,0,1,-7077,235516]), 1075060289) --> "zero argument in
          an arithmetic function"
   MW 70- ellap(ellinit([0,0,1,-7077,235516]),1135392007) --> SEGV
   BA 71- user's manual index truncated if LANG=fr_FR
      72- lex(string1, string2) could return something not in {-1,0,1}
      73- bnfisprincipal(bnf,x, 0) was not instantaneous when bnf.no = 1
      74- no GC in poleval
      75- make clean did not remove libpari-2.2.*
   
     Changed
   BA  1- improved Fp_isom
   IZ  2- remove all dependance on __OPTIMIZE__ for inlining [cf 2.0.14 F-24]
       3- implementation of psi()  [very slow + wrong results at low accuracy]
       4- cleaned up forvec() [no more global variables]
       5- improvements in bnrstark (precompute common data)
   BA  6- improved ffinit()
       7- rewrote time-critical parts of bnrstark
       8- all 'input filter' code removed from GP. es.c:filtre() now handles the
          full filtering [and has become reentrant]
       9- isprime() now guarantees primality
   BA 10- improved polsubcyclo()
   BA 11- new interface for galoissubcyclo
   HC 12- gamma function for integral/rational arguments
      13- faster factornf / nfgcd
      14- removed readline-specific code from gp.c
      15- allow bnrstark over Q
      16- 'subgroup' argument made optional in bnrL1, bnrstark, rnfkummer
      17- use relative van Hoeij algorithm in nffactor [can handle huge number
          of modular factors]
      18- rewrote factorff() to use new modular functions
      19- rewrote primedec() to use new modular functions
      20- rewrote most *modpr functions
      21- modified diagnostics for integral LLL to match floating point version
      22- INCOMPATIBILITY: polgalois(); changed 3rd component of result so that
          it gives the numbering among all transitive subgroups of S_n [ was ad
          hoc up to 7, then as described above for n >= 8 ]
      23- INCOMPATIBILITY: nf.zk is now T2-LLL-reduced
      24- idealtwoelt was very slow when a small prime with many divisors
          divided the index (use approximation theorem)
      25- content(scalar) = abs(scalar) [when it makes sense]
      26- changed the interface to ispseudoprime and isprime
      27- [internal] element_muli: check input is consistent
      28- rewrote all LLL algorithms (use Householder, not Gram-Schmidt; do not
          use Gram matrix; unified code).
      29- INCOMPATIBILITY: the internal components of nf[5] have changed (MC and
          T2 not needed anymore)
      30- INCOMPATIBILITY: [library] polred & polredabs do not take a 'prec'
          argument anymore
      31- unified nfinit, polred* [use dedicated structs internally]
      32- rnfconductor(..., 1) doesn't need GRH anymore
      33- extracted FpXQ_gener from idealstar
      34- allow more types in gdivround
      35- improved root_bound (first step in factor() over Z[X]) for huge pols.
      36- faster bernfrac / bernvec
      37- INCOMPATIBILITY: removed gentimer() / genmsgtimer(). Use TIMER/msgTIMER
      38- let nfsubfields call galoissubfields (much faster when field is Galois)
      39- Configure (locatelib): don't look for lib*.so.x [ pb on Linux with
          [readline | ncurses]-devel.rpm.
   
     Added
       1- mplog2() function --> faster mplog()
       2- gcd for Gaussian integers
   HC  3- APRCL primality test
       4- (strong) Lucas primality test + Baillie-Pomerance-Selfridge-Wagstaff test
   BA  5- Facilities for permutation groups (perm.c).
   BA  6- New functions galoissubgroups, galoisubfields.
   HC  7- Implemented all Bessel functions J, I, N, K, H1, H2, and Bessel functions
          for power series and polynomials.
   HC  8- Implemented PSLQ [preliminary]
   GTo 9- Implemented Cipolla's algorithm for sqrt(Mod(x, p))
      10- library functions FpM_ker, FpM_deplin, diviiround, centermodii
      11- library function gerepileall
      12- library functions corepartial, core2partial
      13- library functions affui, itou, stor, itor
      14- library function lllint_ip (in place)
      15- library functions Q_primitive_part, Q_primpart, Q_remove_denom, Q_denom
      16- allow polredabs to use a partial factorisation of disc(nf) [as polred,
          but inconsistent values for flag. Backward compatibility problem here...]
      17- routine ellminimalmodel()
   IZ 18- systems/ directory (currently for OS/2 only)
   IZ 19- [OS/2:] install() for OS/2 system  (using builtin dlopen)
   IZ 20- gnuplot and X11 are now simultaneously supported
   
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   Done for version 2.2.2 (released 10/01/2002):
     Fixed
       1- qfbred(Qfb(4, 17, 18)) --> SIGFPE
       2- broken compilation in arith.c when CC != gcc
       3- nfhilbert (local case pr | 2) expected POLMOD argument without check
       4- poldegree(P, t) slow when t != varn(P), and may not work in library mode
       5- polrootspadic only worked when leading coeff was a unit
       6- paddicappr was very slow (esp. when p was large)
       7- Configure: check for 'double endianness' [used for double --> t_REAL
          conversion]. Previous check was failing on ARM architecture.
       8- forsubgroup state not properly restored after ^C
       9- libpari.so included symbols from libc without linking it explicitly
          (Debian requirement, and cleaner anyway)
      10- recent pdftex failed to compile users.tex  (\pdfannotlink undefined)
      11- !nf.sign[1] was parsed as (!nf.sign)[1]
      12- matrix(0,1) --> "identical index variables in matrix" [from 2.2.1 F48]
      13- bnfinit could miss some relations in the "small norm" phase
      14- x % y incorrect when y < 0 inexact (2 % -3. --> -1.)
      15- typo in gcdreal (result < 0) [introduced in 2.2.1]
      16- some obscure problems in rnfkummer
      17- not enough GC in hnflll
      18- sqrt(25 + O(2^5))^2 - 25 = O(2^4)
      19- not enough GC when writing a t_PADIC
      20- user member functions were very slow (unnecessary copy)
      21- cd Oxxx; make -j4 bench ran things in the wrong order
      22- poltchebi, pollegendre gave bogus output for negative degrees
      23- possible SEGV or oo loop in polrootsmod when p not a prime
      24- nfnewprec(bnf) could change bnf.gen (due to round-off errors)
      25- SEGV in gcd(x,y) when operands have coeffs of the form Mod(t_INT,t_POL)
      26- not enough GC in poldivres (= t_POL % t_POL)
      27- issquare(Mod(3,27)) = 1  [from 2.2.1 C 10]
      28- [BUG] message in 'elliptic' bench [made polroots more canonical]
   
     Changed
       1- allow compressing *.dvi files for the online help system
       2- index bound was restricted to MAXLONG in subgrouplist. Made it a GEN
       3- try to guess correct precision earlier in polgalois/polroots
       4- allow GP pointers to 'matrix components', e.g issquare(25,&x[i][j])
       5- changed assignment semantics to make it closer to C: x = y understood as
          (evaluate Y:=y, then set x:=Y), e.g i=0; i += (i=2) sets i to 4  (was 2)
       6- output VECSMALLs as 'Vecsmall([...])'
       7- more efficient polcoeff [also: made it independent of MAXVARN]
       8- retuned bnfinit (let subfactorbase increase further):
          setrand(1);bnfinit(x^4 + 1159*x^2 + 335241) would never finish.
       9- specified precisely lex() [see manual]. Now:
          lex([0,0],[0]) = 1 (was -1), lex(0,[0]) = -1 (was 0)
      10- allow factorback(x, e) for prod x[i]^e[i]
      11- don't store empty lines in history [cf 2.2.1 F57]
      12- extend x \ y, x \/ y and divrem(x,y)
   XR 13- improvements in bnrstark (try harder to find modulus, need less memory)
      14- global(x): ignore if x already global (used to raise a warning)
   BA 15- install: add RTLD_GLOBAL to dlopen flags [so that symbols can be used
          in other .so]
      16- removed hack in gp_init.c [used "constant default args" to call print0]
   
     Added
   BA  1- New function 'vectorsmall'.
       2- allow setting variable in divrem
       3- GP operator #l for length(l)
       4- a warning in zsign ("increase precision?") when dubious result
       5- Montgomery reduction (only used in powmodulo() for now)
       6- [experimental] basic tuning utilities (src/test/tune.c) [make tune]
   
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   Done for version 2.2.1 (released 18/10/2001):
   
     Fixed
     1- typo in factornf (factor of degree 3 --> error message)      1- typo in factornf (factor of degree 3 --> error message)
     2- rnflllgram(), idealinv() didn't check their arguments      2- rnflllgram(), idealinv() didn't check their arguments
     3- [readline] \r<TAB> would complete using files matching r*      3- [readline] \r<TAB> would complete using files matching r*
Line 68  BA 23- fix accuracy problems in vandermondeinverse
Line 426  BA 23- fix accuracy problems in vandermondeinverse
 IZ 30- typo in Configure [rl_save_prompt and _eprintf not found in target libs]  IZ 30- typo in Configure [rl_save_prompt and _eprintf not found in target libs]
 MD 31- oo loop in ellap [uninitialized array length in apell1]  MD 31- oo loop in ellap [uninitialized array length in apell1]
    32- stack corruption in addfrac [wrong result for large denominators]     32- stack corruption in addfrac [wrong result for large denominators]
    33- resmod2n [called from powmodulo] could return unnormalized integers  MD 33- resmod2n [called from powmodulo] could return unnormalized integers
    34- not enough GC in nfinit for huge degrees [get_mul_table]     34- not enough GC in nfinit for huge degrees [get_mul_table]
    35- intformal(1/2/t^2) --> apparent oo loop     35- intformal(1/2/t^2) --> apparent oo loop
    36- polredabs(degree 1 polynomial) --> x  [could be very slow]     36- polredabs(degree 1 polynomial) --> x  [could be very slow]
Line 87  XR 47- factorpadic(, not a prime, ) --> SEGV
Line 445  XR 47- factorpadic(, not a prime, ) --> SEGV
 BA 49- better arguments checking for galoisfixedfield  BA 49- better arguments checking for galoisfixedfield
    50- psi(I) --> incorrect type in rtodbl     50- psi(I) --> incorrect type in rtodbl
 XR 51- increase precision automatically when needed in quadhilbertreal  XR 51- increase precision automatically when needed in quadhilbertreal
      52- idealstar(bnfinit(polcyclo(5)),11).clgp --> stack error
      53- default(format,"g0.4"); 3./10 --> 0.300004577  [now: 0.3000]
      54- subst() didn't check its arguments (e.g SEGV on t_STR)
      55- qfbclassno(x < 0): wrong algo when x non fundamental
      56- obscure bugs with types FRACN/RFRACN [when simplifies to INT/POL]
   IZ 57- readline history: while inputing continuation lines, the partial
          command was not put into history until full command was run
      58- not enough GC in polroots (dft) for huge degrees
      59- Cygwin: don't try to build gp-dyn.exe [crashes]
      60- use vsnprintf to fix a long-standing bug in PARI output (using formats)
          used a fixed-length buffer that could overflow. If vsnprintf is not
          found by Configure, the bug remains.
   
   Changed    Changed
     1- removed useless parameter prec in many bnr* and rnf* functions      1- removed useless parameter prec in many bnr* and rnf* functions
     2- major update of bnr* functions [use elements in factored form]      2- major update of bnr* functions [use elements in factored form]
     3- use /tmp instead of /var/tmp as default tmp directory [faster on Solaris]      3- use /tmp instead of /var/tmp as default tmp directory [faster on Solaris]
 BA  4- Fp_PHlog (Pohlig-Hellman) can use a factorization of the subgroup order  BA  4- Fp_PHlog (Pohlig-Hellman) can use a factorization of the subgroup order
     5- major update of buchall() [bnfinit]: accurate precision increase, cleanup      5- major update of buchall() [bnfinit]: accurate precision increase, use
          multiplicative archimedean components (fewer logs), cleanup
     6- [libpari:] rename permute/permuteInv to GP names numtoperm/permtonum      6- [libpari:] rename permute/permuteInv to GP names numtoperm/permtonum
     7- scalar + [;] --> error  [made it [;]]      7- scalar + [;] --> error  [made it [;]]
 BA  8- factorback, chinese, lcm and gcd now accept a single vector  BA  8- factorback, chinese, lcm and gcd now accept a single vector
Line 104  BA  8- factorback, chinese, lcm and gcd now accept a s
Line 475  BA  8- factorback, chinese, lcm and gcd now accept a s
    13- rnfequation: use modular (bivariate) resultant     13- rnfequation: use modular (bivariate) resultant
    14- polynomial gcd (srgcd): uses modular algo (modulargcd,nfgcd) if possible     14- polynomial gcd (srgcd): uses modular algo (modulargcd,nfgcd) if possible
    15- unified internal hnf* functions     15- unified internal hnf* functions
    16- improved nfsubfields [better Hensel lift]     16- improved nfsubfields [Hensel lift, allow nfsubfields(pol) instead of nf]
    17- merged all "integer logarithms" + "safe ceil" functions (mylogint,     17- merged all "integer logarithms" + "safe ceil" functions (mylogint,
        get_e, floor_bound, myceil)         get_e, floor_bound, myceil)
    18- readline: TAB on empty parentheses following a function name has the     18- readline: TAB on empty parentheses following a function name has the
Line 114  IS 20- obscure compiler bug in rootpol.c:max_modulus()
Line 485  IS 20- obscure compiler bug in rootpol.c:max_modulus()
    21- make bench ('elliptic'): explained [BUG] message     21- make bench ('elliptic'): explained [BUG] message
    22- allow lift(t_PADIC)     22- allow lift(t_PADIC)
    23- faster polroots for Q of the form P(x^k)     23- faster polroots for Q of the form P(x^k)
    24- allow nfsubfields(pol,)  [had to be nf]     24- allow subst(t, x^n, x)
    25- allow subst(t, x^n, x)     25- ?user_fun: do not include function text if help available from addhelp
    26- ?user_fun: do not include function text if help available from addhelp  
        [always include it for ??user_fun]         [always include it for ??user_fun]
    27- default values for used defined function arguments are evaluated when     26- default values for used defined function arguments are evaluated when
        the function is called [used to be "when it's defined"]         the function is called [used to be "when it's defined"]
      27- allow subgrouplist(znstar(5)) [didn't accept groups in general form]
      28- taught GP about GP2C-style type declaration [ignored]
      29- 0. [realzero()] is now coded on 2 words (was 3, with third one ignored)
   IZ 30- readline history: lines are remembered as they were input (whitespace
          was deleted)
   
   Added    Added
 BA  1- function pith() [= pi(x), naïve implementation]  BA  1- function pith() [= pi(x), naïve implementation]
Line 133  IZ  8- readline: F1 has same effect as M-h, and F1F1 a
Line 508  IZ  8- readline: F1 has same effect as M-h, and F1F1 a
     9- function writebin      9- function writebin
 XR 10- new error message "precer" (precision too low in...)  XR 10- new error message "precer" (precision too low in...)
    11- allow minimal handling of t_VECSMALL under GP     11- allow minimal handling of t_VECSMALL under GP
   IZ 12- add error messages (as in err(shier2)) to emacs tag file
      13- add error messages (as in err(shier2)) to vi tag file
   IZ 14- add flag to shift() to enable consistency with 2-complement semantic
   IZ 15- default 'prompt_cont' for continuation lines
   IZ 16- default 'readline' to switch readline on/off in readline-able binaries
   IZ 17- capabilities to 'bittest' (return bitmap, 2-complement arithmetic)
   GH 18- inline assembler micro-kernel for alpha + recent gcc (at least 2.95.3)
   
   Removed    Removed
     1- obsolete functions twototwo, threetotwo, threetotwo2      1- obsolete functions twototwo, threetotwo, threetotwo2
Line 1628  HC  4- functions where it makes sense now admit an opt
Line 2010  HC  4- functions where it makes sense now admit an opt
     6- remove {} and \ from readline history      6- remove {} and \ from readline history
     7- improve treatment of sample programs in gphelp -d      7- improve treatment of sample programs in gphelp -d
     8- uniformized debugmem messages      8- uniformized debugmem messages
     9- simplify the coinit function (Michael Somos)  MSo 9- simplify the coinit function
    10- changing the function set through default(compatible,) no longer     10- changing the function set through default(compatible,) no longer
        resets installed functions         resets installed functions
    11- renamed nfker-->nfkermodpr, nfgauss-->nfsolvemodpr     11- renamed nfker-->nfkermodpr, nfgauss-->nfsolvemodpr
Legend:
Removed from v.1.1  
changed lines
  Added in v.1.2
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