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1.3     ! noro        1: @comment $OpenXM: OpenXM/src/asir-doc/parts/risa.texi,v 1.2 1999/12/21 02:47:32 noro Exp $
1.1       noro        2: @node Risa/Asir,,, Top
                      3: @chapter Risa/Asir
                      4:
                      5: @menu
1.2       noro        6: \BJP
1.1       noro        7: * Risa $B$*$h$S(B Asir::
                      8: * Asir $B$NFCD'(B::
                      9: * $B%$%s%9%H%l!<%7%g%s(B::
                     10: * $B%3%^%s%I%i%$%s%*%W%7%g%s(B::
                     11: * $B4D6-JQ?t(B::
                     12: * $B5/F0$+$i=*N;$^$G(B::
                     13: * $B3d$j9~$_(B::
                     14: * $B%(%i!<=hM}(B::
                     15: * $B7W;;7k2L$*$h$SFC<l$J?t(B::
1.2       noro       16: \E
                     17: \BEG
                     18: * Risa and Asir::
                     19: * Features of Asir::
                     20: * Installation::
                     21: * Command line options::
                     22: * Environment variable::
                     23: * Starting and Terminating an Asir session::
                     24: * Interruption::
                     25: * Error handling::
                     26: * Referencing results and special numbers::
                     27: \E
1.1       noro       28: @end menu
                     29:
1.2       noro       30: \BJP
1.1       noro       31: @node Risa $B$*$h$S(B Asir,,, Risa/Asir
                     32: @section Risa $B$*$h$S(B Asir
1.2       noro       33: \E
                     34: \BEG
                     35: @node Risa and Asir,,, Risa/Asir
                     36: @section @b{Risa} and @b{Asir}
                     37: \E
1.1       noro       38:
                     39: @noindent
1.2       noro       40: \BJP
1.1       noro       41: @b{Risa} $B$O(B, $BIY;NDL8&$G3+H/Cf$N?t<0=hM}%7%9%F%`(B/$B%i%$%V%i%j$NAm>N$G$"$k(B.
                     42: @b{Risa} $B$N9=@.$O<!$NDL$j$G$"$k(B.
1.2       noro       43: \E
                     44: \BEG
                     45: @b{Risa} is the name of whole libraries of a computer algebra system
                     46: which is under development at FUJITSU LABORATORIES LIMITED.
                     47: The structure of @b{Risa} is as follows.
                     48: \E
1.1       noro       49:
                     50: @itemize @bullet
                     51: @item
1.2       noro       52: \JP @code{$B4pK\1i;;It(B}
                     53: \EG @b{The basic algebraic engine}
1.1       noro       54:
1.2       noro       55: \BJP
1.1       noro       56: $B$3$l$O(B, @b{Risa} $B$NFbIt7A<0$KJQ49$5$l$?%*%V%8%'%/%H(B ($B?t(B, $BB?9`<0$J$I(B)
                     57: $B$N4V$N1i;;$r<B9T$9$kItJ,$G$"$j(B, UNIX $B$N(B @samp{libc.a} $B$J$I$HF1MM$N(B, $B%i%$%V%i(B
                     58: $B%j$H$7$FB8:_$9$k(B. $B%(%s%8%s$O(B, C $B$*$h$S(B $B%"%;%s%V%i$G5-=R$5$l(B, $B8e=R$9$k(B
1.2       noro       59: $B8@8l%$%s%?%U%'!<%9(B @b{Asir} $B$N4pK\1i;;It$H$7$FMQ$$$i$l$F$$$k(B.
                     60: @comment $B0lJ}(B, $B?t<07W;;$rI,MW$H$9$k$5$^$6$^$J%W%m%0%i%`Cf$K%j%s%/$7$FMQ$$$k$3$H$,$G$-$k(B.
                     61: \E
                     62: \BEG
                     63: This is the part which performs basic algebraic operations,
                     64: such as arithmetic operations, to algebraic objects, e.g., numbers and
                     65: polynomials, which are already converted into internal forms.
                     66: It exists, like @samp{libc.a} of UNIX, as a library of ordinary UNIX system.
                     67: The algebraic engine is written mainly in C language and
                     68: partly in assembler.
                     69: It serves as the basic operation part of @b{Asir}, a standard
                     70: language interface of @b{Risa}.
                     71: @comment It can also be linked to various programs that need some symbolic
                     72: @comment and algebraic computation.
                     73: \E
                     74:
1.1       noro       75: @item
1.2       noro       76: \JP @code{$B%a%b%j4IM}It(B}
                     77: \EG @b{Memory Manager}
1.1       noro       78:
1.2       noro       79: \BJP
1.1       noro       80: @b{Risa} $B$G$O(B, $B%a%b%j4IM}It$H$7$F(B, @code{[Boehm,Weiser]} $B$K$h$k%U%j!<(B
                     81: $B%=%U%H%&%'%"(B (@code{gc-5.0alpha2}) $B$rMQ$$$F$$$k(B. $B$3$l$O%,!<%Y%8%3%l%/%7%g%s(B
                     82: ($B0J2<(B GC $B$H8F$V(B) $B$r<+F0E*$K9T$&%a%b%j3d$jEv$F5!9=$r;}$A(B, @b{Risa} $B$N3F(B
                     83: $BItJ,$O$9$Y$F$3$l$K$h$jI,MW$J%a%b%j$rF@$F$$$k(B.
1.2       noro       84: \E
                     85: \BEG
                     86: @b{Risa} employs, as its memory management component (the memory
                     87: manager), a free software distributed by Boehm (@code{gc-5.0alpha2}).
                     88: It is proposed by @code{[Boehm,Weiser]}, and developed by Boehm and
                     89: his colleagues.
                     90: The memory manager has a memory allocator which automatically
                     91: reclaims garbages, i.e., allocated but unused memories,
                     92: and refreshes them for further use.
                     93: The algebraic engine gets all its necessary memories through the memory
                     94: manager.
                     95: \E
1.1       noro       96:
                     97: @item
                     98: @b{Asir}
                     99:
1.2       noro      100: \BJP
1.1       noro      101: @b{Asir} $B$O(B, @b{Risa} $B$N7W;;%(%s%8%s$N8@8l%$%s%?%U%'!<%9$G(B
                    102: $B$"$k(B. @b{Risa} $B$G$O(B, $BHf3SE*MF0W$K%f!<%6MQ$N8@8l%$%s%?%U%'!<%9$r:n$k(B
                    103: $B$3$H$,$G$-$k(B. @b{Asir} $B$O$=$N0l$D$NNc$H$7$F:n$C$?$b$N$G(B, C $B8@8l$K6a(B
                    104: $B$$J8K!$r$b$D(B. $B$^$?(B, C $B$N%G%P%C%,$H$7$F9-$/MQ$$$i$l$F$$$k(B @code{dbx} $BIw(B
                    105: $B$N%G%P%C%,$bHw$($F$$$k(B.
1.2       noro      106: \E
                    107: \BEG
                    108: @b{Asir} is a standard language interface of @b{Risa}'s algebraic
                    109: engine. It is one of the possible language interfaces, because
                    110: one can develop one's own language interface easily on @b{Risa}
                    111: system.
                    112: @b{Asir} is an example of such language interfaces.
                    113: @b{Asir} has very similar syntax and semantics as C language.
                    114: Furthermore, it has a debugger that provide a subset of commands of
                    115: @code{dbx}, a widely used debugger of C language.
                    116: \E
1.1       noro      117: @end itemize
                    118:
1.2       noro      119: \BJP
1.1       noro      120: @node Asir $B$NFCD'(B,,, Risa/Asir
                    121: @section Asir $B$NFCD'(B
1.2       noro      122: \E
                    123: \BEG
                    124: @node Features of Asir,,, Risa/Asir
                    125: @section Features of @b{Asir}
                    126: \E
1.1       noro      127:
                    128: @noindent
1.2       noro      129: \BJP
1.1       noro      130: @b{Asir} $B$O(B, $BA0=R$NDL$j(B, $B7W;;%(%s%8%s$N8@8l%$%s%?%U%'!<%9$G$"(B
                    131: $B$k(B. $BDL>o(B @b{Asir} $B$H$$$&L>A0$N<B9T2DG=%U%!%$%k$H$7$FDs6!$5$l$k(B.
                    132: $B8=:_%5%]!<%H$5$l$F$$$k5!G=$O35$M<!$NDL$j$G$"$k(B.
1.2       noro      133: \E
                    134: \BEG
                    135: As mentioned in the previous section, @b{Asir} is a standard language
                    136: interface for@b{Risa}'s algebraic engine.
                    137: Usually, it is provided as an executable file named @code{asir}.
                    138: Main features supported for the current version of Asir is as follows.
                    139: \E
1.1       noro      140:
                    141: @itemize @bullet
1.2       noro      142: \BJP
1.1       noro      143: @item
                    144: C $B8@8lIw$N%f!<%68@8l(B
                    145:
                    146: @item
                    147: $B?t(B, $BB?9`<0(B, $BM-M}<0$N2C8:>h(B($B=|(B)
                    148:
                    149: @item
                    150: $B%Y%/%H%k(B, $B9TNs$N1i;;(B
                    151:
                    152: @item
                    153: $B:G>.8B$N%j%9%H=hM}(B
                    154:
                    155: @item
                    156: $BAH$_9~$_H!?t(B ($B0x?tJ,2r(B, GCD, $B%0%l%V%J4pDl$J$I(B)
                    157:
                    158: @item
                    159: $B%f!<%6Dj5AH!?t$K$h$k%D!<%k(B ($BBe?tBN>e$N0x?tJ,2r$J$I(B)
                    160:
                    161: @item
                    162: @code{dbx} $BIw$N%G%P%C%,(B
                    163:
                    164: @item
                    165: $B1"H!?t$NIA2h(B
                    166:
                    167: @item
                    168: @b{PARI} (@pxref{pari}) $B$K$h$k=iEyD61[H!?t$r4^$`<0$NI>2A(B
                    169:
                    170: @item
                    171: UNIX $B>e$G$NJ,;67W;;5!G=(B (Open XM)
                    172: @comment @item
                    173: @comment $B%R%9%H%jCV495!G=$r$b$D(B X11 $B%$%s%?%U%'!<%9(B
1.2       noro      174: \E
                    175: \BEG
                    176: @item
                    177: A C-like programming language
                    178:
                    179: @item
                    180: Arithmetic operations (addition, subtraction, multiplication
                    181: and division) on numbers, polynomials and rational expressions
                    182:
                    183: @item
                    184: Operations on vectors and matrices
                    185:
                    186: @item
                    187: List processing operations at the minimum
                    188:
                    189: @item
                    190: Several Built-in functions (factorization, GCD computation, Groebner basis
                    191: computation etc.)
                    192:
                    193: @item
                    194: Useful user defined functions(e.g., factorization over algebraic number fields)
                    195:
                    196: @item
                    197: A @code{dbx}-like debugger
                    198:
                    199: @item
                    200: Plotting of implicit functions
                    201:
                    202: @item
                    203: Numerical evaluation of mathematical expressions including elementary
                    204: transcendental functions at arbitrary precision. This feature is
                    205: in force only if @b{PARI} system (@pxref{pari}).
                    206:
                    207: @item
                    208: Distributed computation over UNIX
                    209: \E
1.1       noro      210: @end itemize
                    211:
1.2       noro      212: \BJP
1.1       noro      213: @node $B%$%s%9%H%l!<%7%g%s(B,,, Risa/Asir
                    214: @section $B%$%s%9%H%l!<%7%g%s(B
1.2       noro      215: \E
                    216: \BEG
                    217: @node Installation,,, Risa/Asir
                    218: @section Installation
                    219: \E
                    220:
                    221: \JP $B0J2<$N<jB3$-$GITL@$JE@(B, $BITET9g$JE@$,$"$C$?>l9g$NLd$$9g$o$;$O(B
                    222: \BEG
                    223: Any questions and any comments on this manual are well come by e-mails
                    224: to the following address.
                    225: \E
1.1       noro      226:
                    227: @example
1.2       noro      228: noryo@@flab.fujitsu.co.jp
1.1       noro      229: @end example
                    230:
                    231: @noindent
1.2       noro      232: \JP $B08$K(B e-mail $B$G$*4j$$$7$^$9(B.
1.1       noro      233:
                    234: @menu
1.2       noro      235: \BJP
1.1       noro      236: * UNIX $BHG(B::
                    237: * Windows $BHG(B::
1.2       noro      238: \E
                    239: \BEG
                    240: * UNIX version::
                    241: * Windows version::
                    242: \E
1.1       noro      243: @end menu
                    244:
1.2       noro      245: \BJP
1.1       noro      246: @node UNIX $BHG(B,,, $B%$%s%9%H%l!<%7%g%s(B
                    247: @subsection UNIX $BHG(B
1.2       noro      248: \E
                    249: \BEG
                    250: @node UNIX version,,, Installation
                    251: @subsection UNIX version
                    252: \E
1.1       noro      253:
                    254: @noindent
1.2       noro      255: \BJP
1.1       noro      256: $BI,MW$J%U%!%$%k$O(B @samp{asir.tgz} $B$G$"$k(B.
                    257: $B$3$l$i$OA4$F(B @code{gzip} $B$G05=L$7$F$"$k$N$G(B, $BF~<j8e(B @code{gzip} $B$G(B
                    258: $BE83+$9$k(B. $B$^$:(B, $B%$%s%9%H!<%k$9$k%G%#%l%/%H%j$r7h$a$k(B. $B%G%U%)%k%H$G$O(B
                    259: @samp{/usr/local/lib} $B$K(B @samp{asir} $B$H$$$&%G%#%l%/%H%j$H$7$F(B
                    260: $B%$%s%9%H!<%k$5$l$k$3$H$r2>Dj$7$F$$$k(B. $B0J2<$3$N%G%#%l%/%H%j$r%i%$%V%i%j(B
                    261: $B%G%#%l%/%H%j$H8F$V(B.
1.2       noro      262: \E
                    263: \BEG
                    264: A file @samp{asir.tgz} suitable for the taget machine/architecture
                    265: is required. After getting it,
                    266: you have to unpack it by @code{gzip}. First of all, determine
                    267: a derectory where binaries and library files are installed.
                    268: We call the directory the @b{library directory}.
                    269: The following installs the files in @samp{/usr/local/lib/asir}.
                    270: \E
1.1       noro      271:
                    272: @example
                    273: # gzip -dc asir.tgz | ( cd /usr/local/lib; tar xf - )
                    274: @end example
                    275:
1.2       noro      276: \JP $B8D?ME*$K;HMQ$9$k>l9g$K$O(B, @samp{$HOME}$B$J$I$KCV$$$F$b$h$$(B.
                    277: \BEG
                    278: In this case you don't have to set any environment variable.
1.1       noro      279:
1.2       noro      280: You can install them elsewhere.
                    281: \E
1.1       noro      282: @example
                    283: % gzip -dc asir.tgz | ( cd $HOME; tar xf - )
                    284: @end example
                    285:
                    286: @noindent
1.2       noro      287: \BJP
1.1       noro      288: $B$3$N>l9g(B, $B%i%$%V%i%j%G%#%l%/%H%j$NL>A0$r4D6-JQ?t(B
                    289: @code{ASIR_LIBDIR} $B$K@_Dj$9$kI,MW$,$"$k(B.
1.2       noro      290: \E
                    291: \BEG
                    292: In this case you have to set the name of the library directory
                    293: to the environment variable @code{ASIR_LIBDIR}.
                    294: \E
1.1       noro      295:
                    296: @example
                    297: % setenv ASIR_LIBDIR $HOME/asir
                    298: @end example
                    299:
                    300: @noindent
1.2       noro      301: \BJP
1.1       noro      302: Asir $BK\BN$O(B, $B%i%$%V%i%j%G%#%l%/%H%j$N(B @samp{asir} $B$G$"$k(B.
                    303: @samp{/usr/local/bin} $B$"$k$$$O%f!<%6$N<B9T%U%!%$%k%5!<%A%Q%9(B
                    304: $B$N$I$3$+$K%7%s%\%j%C%/%j%s%/$r:n$k$HJXMx$G$"$k(B.
1.2       noro      305: \E
                    306: \BEG
                    307: @b{Asir} itself is in the library directory. It will be convenient
                    308: to create a symbolic link to it from @samp{/usr/local/bin} or
                    309: the user's search path.
                    310: \E
1.1       noro      311:
                    312: @example
                    313: # ln -s /usr/local/lib/asir/asir /usr/local/bin/asir
                    314: @end example
                    315:
                    316: @noindent
1.2       noro      317: \JP $B$3$N>uBV$G(B @samp{asir} $B$r5/F0$7$F$_$k(B.
                    318: \BEG
                    319: Start @samp{asir}, and @b{Asir} will immediately terminate leaving you
                    320: a message as follows.
                    321: \E
1.1       noro      322:
                    323: @example
                    324: % /usr/local/bin/asir
                    325: asir_key not found.
                    326: ID for this machine is XXXXXXXX.
                    327: See the file ASIR_INSTALL to get the correct key.
                    328: @end example
                    329:
                    330: @noindent
1.2       noro      331: \BJP
1.1       noro      332: $B$9$k$H(B, $B$3$N$h$&$J%a%C%;!<%8$,=P$F(B @samp{asir} $B$O=*N;$9$k(B. UNIX $BHG(B
                    333: $B$G$O(B, $B%^%7%s$4$H$K(B @code{key} $B$H8F$P$l$kJ8;zNs$,I,MW$G$"$k(B.
                    334: @code{key} $B$rF~<j$9$k$?$a$K$O(B,
                    335:
                    336: @example
                    337: risa@@para.flab.fujitsu.co.jp
                    338: @end example
                    339:
                    340: $B08$K(B,
                    341:
                    342: @example
                    343: ASIR XXXXXXXX
                    344: @end example
                    345:
                    346: $B$H$$$&(B 1 $B9T$N$_$+$i$J$k(B e-mail $B$rAw$l$P$h$$(B. @code{XXXXXXXX} $B$OI=<($5$l$?(B
                    347: @code{ID} $B$G$"$k(B. $B@^$jJV$7(B
                    348:
                    349: @example
                    350: YYYYYYYY YYYYYYYY YYYYYYYY
                    351: @end example
                    352:
                    353: @noindent
                    354: $B$H$$$&7A$N(B 1 $B9T$N$_$+$i$J$k(B e-mail $B$,FO$/$N$G(B, $B$3$N(B 1 $B9T$r4^$`(B @samp{asir_key}
                    355: $B$J$k%U%!%$%k$r%+%l%s%H%G%#%l%/%H%j$K:n$C$F(B @samp{asir} $B$r5/F0$7$F$_$k(B.
1.2       noro      356: \E
                    357:
                    358: \BEG
                    359: For UNIX version of @b{Asir}, you need a @code{key}, a string,
                    360: for each machine you want to run @b{Asir}.
                    361: In order to get the @code{key}, you just need to send an e-mail
                    362: consisting of a single line like
                    363:
                    364: @example
                    365: ASIR XXXXXXXX
                    366: @end example
                    367:
                    368: to address
                    369:
                    370: @example
                    371: risa@@para.flab.fujitsu.co.jp
                    372: @end example
                    373:
                    374: @noindent
                    375: Here, @code{XXXXXXXX} is the machine ID notified in the first message
                    376: from @b{Asir}.
                    377:
                    378: After a while, an e-mail will be returned containing only one line like
                    379:
                    380: @example
                    381: YYYYYYYY YYYYYYYY YYYYYYYY
                    382: @end example
                    383:
                    384: @noindent
                    385: Then, you shall create a new file in the current directory
                    386: named @samp{asir_key} containing the returned string in one line.
                    387:
                    388: All after this, call again @samp{asir}.
                    389: \E
1.1       noro      390:
                    391: @example
                    392: % /usr/local/bin/asir
                    393: This is Asir, Version 990831.
                    394: Copyright (C) FUJITSU LABORATORIES LIMITED.
                    395: 3 March 1994. All rights reserved.
                    396: [0]
                    397: @end example
                    398:
                    399: @noindent
1.2       noro      400: \BJP
1.1       noro      401: $B$3$N$h$&$J%W%m%s%W%H$,=P$l$P(B, $BF~<j$7$?(B @code{key} $B$O$=$N%^%7%s$KBP$7$FM-8z(B
                    402: $B$G$"$k(B. @code{key} $B$r=q$$$F$*$/%U%!%$%k$K4X$7$F$O(B, $B4D6-JQ?t(B @code{ASIR_KEY}
                    403: $B$N@bL@$N9`$G>\$7$/=R$Y$k$,(B, $B%i%$%V%i%j%G%#%l%/%H%j$K$3$3$G:n@.$7$?(B
                    404: $B%U%!%$%k(B @samp{asir_key} $B$rCV$1$P(B, $B$=$N%^%7%s>e$GA4$F$N%f!<%6$,(B @samp{asir}
                    405: $B$r;HMQ$G$-$k$h$&$K$J$k(B. @samp{asir_key} $B$K$OJ#?t$N%^%7%s$KBP$9$k(B @code{key}
                    406: $B$r=q$1$k$N$G(B, $B%i%$%V%i%j%G%#%l%/%H%j$r6&M-$7$F$$$k>l9g$G$b(B @samp{asir_key}
                    407: $B$K9T$rDI2C$7$F$$$1$P$h$$(B.
1.2       noro      408: \E
                    409: \BEG
                    410: If you get such a prompt (@samp{[0]}) from @b{Asir},
                    411: the key you have is valid to the machine you are currently running
                    412: @code{asir}.
                    413:
                    414: When the file @samp{asir_key} is located on the library directory,
                    415: all the users of the machine can execute @samp{asir}.
                    416: The file @samp{asir_key} can contain several lines for
                    417: several @code{key}'s.
                    418: This enables users to run several machines sharing the same library
                    419: directory by simply adding lines for machines to be used.
                    420: We shall describe about the file for @code{key}'s in detail in
                    421: @ref{Environment variable}.
                    422: \E
1.1       noro      423:
                    424: @example
                    425: # cp asir_key /usr/local/lib/asir
                    426: @end example
                    427:
1.2       noro      428: \BJP
1.1       noro      429: @node Windows $BHG(B,,, $B%$%s%9%H%l!<%7%g%s(B
                    430: @subsection Windows $BHG(B
1.2       noro      431: \E
                    432: \BEG
                    433: @node Windows version,,, Installation
                    434: @subsection Windows version
                    435: \E
1.1       noro      436:
                    437: @noindent
1.2       noro      438: \BJP
1.1       noro      439: $BI,MW$J%U%!%$%k$O(B @samp{asirwin.tgz} $B$G$"$k(B. $BB>$K(B, @samp{gzip.exe},
                    440: @samp{tar.exe} $B$,I,MW$@$,(B, asirwin.tgz $B$HF1$8%G%#%l%/%H%j$KMQ0U$7$F(B
                    441: $B$"$k(B. $B$3$l$i(B 3 $B$D$N%U%!%$%k$rF10l%G%#%l%/%H%j$K$*$-(B, DOS $B%W%m%s%W%H(B
                    442: $B$+$i(B
1.2       noro      443: \E
                    444: \BEG
                    445: The necessary file is @samp{asirwin.tgz}. To unpack it @samp{gzip.exe}
                    446: and @samp{tar.exe} are necessary. They are in the same
                    447: directory as @samp{asirwin.tgz} on the ftp server.
                    448: Putting them in the same directory, execute the following:
                    449: \E
1.1       noro      450:
                    451: @example
1.2       noro      452: \JP C:\...> tar xzf asirwin.tgz
                    453: \EG C:\...> tar xzf asirwin.tgz
1.1       noro      454: @end example
                    455:
                    456: @noindent
1.2       noro      457: \BJP
1.1       noro      458: $B$r<B9T$9$l$P(B, @samp{Asir} $B$H$$$&%G%#%l%/%H%j(B (Asir $B%k!<%H%G%#%l%/%H%j(B)
                    459: $B$,$G$-$k(B. 990831 $BHG$G$O(B, GUI $B$HK\BN$,J,N%$5$l(B, $B$^$?%G%P%C%0%&%#%s%I%&$b(B
                    460: $BJL%W%m%;%9$H$7$F(B GUI $B$,8F$S=P$5$l$k$?$a(B, Asir $B%k!<%H%G%#%l%/%H%j$,@5$7$/(B
                    461: $BEPO?$5$l$F$$$k$3$H$,I,MW$G$"$k(B.  Asir $B%k!<%H%G%#%l%/%H%j$N%5%V%G%#%l%/%H(B
                    462: $B%j(B @samp{bin} $B$K(B @samp{asirgui.exe} (GUI), @samp{engine.exe} ($BK\BN(B) $B$,(B
                    463: $BCV$+$l$F$$$k(B. @samp{asirgui.exe} $B$N=i2s$NN)$A>e$2$O(B, $B%(%/%9%W%m!<%i$+$i9T(B
                    464: $B$&(B. $B$3$l$K$h$j(B
1.2       noro      465: \E
                    466:
                    467: \BEG
                    468: Then a directory @samp{Asir} (@b{Asir root directory}) is created,
                    469: which has subdirectories named @samp{bin} and @samp{lib}. To set up it,
                    470: invoke @samp{bin\asirgui.exe} from Explorer and
                    471: click @code{OK}.  Then the name of @b{Asir root directory} is set to the
                    472: following registries.
                    473: \E
1.1       noro      474:
                    475: @example
1.2       noro      476: \JP HKEY_LOCAL_MACHINE\SOFTWARE\FUJITSU\Asir\99.03.31\Directory
                    477: \EG HKEY_LOCAL_MACHINE\SOFTWARE\FUJITSU\Asir\99.03.31\Directory
1.1       noro      478: @end example
                    479:
                    480: @noindent
1.2       noro      481: \JP $B$H$$$&%l%8%9%H%j$K(B Asir $B%k!<%H%G%#%l%/%H%j$,@5$7$/EPO?$5$l$k(B.
1.1       noro      482:
1.2       noro      483: \BJP
1.1       noro      484: @node $B%3%^%s%I%i%$%s%*%W%7%g%s(B,,, Risa/Asir
                    485: @section $B%3%^%s%I%i%$%s%*%W%7%g%s(B
1.2       noro      486: \E
                    487: \BEG
                    488: @node Command line options,,, Risa/Asir
                    489: @section Command line options
                    490: \E
1.1       noro      491:
                    492: @noindent
1.2       noro      493: \JP $B%3%^%s%I%i%$%s%*%W%7%g%s$O<!$NDL$j(B.
                    494: \EG Command-line options for the command @samp{asir} are as follows.
1.1       noro      495:
                    496: @table @code
                    497:
                    498: @item -heap @var{number}
1.2       noro      499: \BJP
1.1       noro      500: @code{Risa/Asir} $B$G$O(B, 4KB $B$N%V%m%C%/$r%a%b%j3d$jEv$F$NC10L$H$7$FMQ$$$F$$$k(B.
                    501: $B%G%U%)%k%H$G$O(B, $B=i4|(B heap $B$H$7$F(B, 16 $B%V%m%C%/(B (64KB) $B3d$jEv$F$k$,(B, $B$=$l(B
                    502: $B$rJQ99$9$k>l9g(B, @code{-heap} $B$rMQ$$$k(B. $BC10L$O%V%m%C%/$G$"$k(B.
                    503: heap $B$NBg$-$5$O(B, @code{heap()} $BH!?t$GD4$Y$k$3$H$,$G$-$k(B ($BC10L$O%P%$%H(B).
1.2       noro      504: \E
                    505: \BEG
                    506: In @b{Risa/Asir}, 4KB is used as an unit, called block,
                    507: for memory allocation.
                    508: By default, 16 blocks (64KB) are allocated initially.
                    509: This value can be changed by giving an option @code{-heap}
                    510: a number parameter in unit block.
                    511: Size of the heap area is obtained by a Built-in function heap(),
                    512: the result of which is a number in Bytes.
                    513: \E
1.1       noro      514:
                    515: @item -adj @var{number}
1.2       noro      516: \BJP
1.1       noro      517: $B$3$NCM$,Bg$-$$$[$I(B, $B;HMQ%a%b%jNL$OBg$-$/$J$k$,(B, GC $B;~4V$,>/$J$/$J(B
                    518: $B$k(B. @var{number} $B$H$7$F(B 1 $B0J>e$N@0?t$,;XDj$G$-$k(B. $B%G%U%)%k%H$G$O(B 3 $B$G$"(B
                    519: $B$k(B. $B$3$NCM$,(B 1 $B0J2<$K$J$k$H(B GC $B$r$7$J$$@_Dj$K$J$k$N$GMWCm0U$G$"$k(B. heap
                    520: $B$r$J$k$Y$/?-$P$5$:$K(B, GC $B$r<gBN$K$7$F%a%b%j4IM}$7$?$$>l9g$K$O(B, $B$3$NCM$r(B
                    521: $BBg$-$/(B ($BNc$($P(B 8) $B@_Dj$9$k(B.
1.2       noro      522: \E
                    523: \BEG
                    524: Heap area will be stretched by the memory manager,
                    525: if the size of reclaimed memories is less than 1/@var{number}
                    526: of currently allocated heap area.
                    527: The default value for @var{number} is 3.
                    528: If you do not prefer to stretch heap area by some reason, perhaps by
                    529: restriction of available memories, but if prefer to resort to
                    530: reclaiming garbages as far as possible,
                    531: then a large value should be chosen for @var{number}, e.g., 8.
                    532: \E
1.1       noro      533:
                    534: @item -norc
1.2       noro      535: \JP $B=i4|2=%U%!%$%k(B @samp{$HOME/.asirrc} $B$rFI$^$J$$(B.
                    536: \BEG
                    537: When this option is specified, @b{Asir} does not read the
                    538: initial file @samp{$HOME/.asirrc}.
                    539: \E
1.1       noro      540:
                    541: @item -f @var{file}
1.2       noro      542: \BJP
1.1       noro      543: $BI8=`F~NO$NBe$o$j$K(B, @var{file} $B$+$iF~NO$rFI$_9~$s$G<B9T$9$k(B.
                    544: $B%(%i!<$N:]$K$O$?$@$A$K=*N;$9$k(B.
1.2       noro      545: \E
                    546: \BEG
                    547: Instead of the standard input, @var{file} is used as the input.
                    548: Upon an error, the execution immediately terminates.
                    549: \E
1.1       noro      550:
                    551: @item -paristack @var{number}
1.2       noro      552: \BJP
1.1       noro      553: @b{PARI} (@pxref{pari}) $B@lMQ$NNN0h$NBg$-$5$r;XDj$9$k(B. $BC10L$O%P%$%H(B. $B%G%U%)(B
                    554: $B%k%H$G$O(B 1 MB.
1.2       noro      555: \E
                    556: \BEG
                    557: This option specifies the private memory size for @code{PARI} (@pxref{pari}).
                    558: The unit is Bytes. By default, it is set to 1 MB.
                    559: \E
1.1       noro      560:
                    561: @item -maxheap @var{number}
1.2       noro      562: \BJP
1.1       noro      563: heap $BNN0h$N>e8B$r;XDj$9$k(B. $BC10L$O%P%$%H(B. $B%G%U%)%k%H$G$OL5@)8B(B. UNIX $B$N(B
                    564: $B>l9g(B, $B<B:]$K$O(B @code{limit} $B%3%^%s%I$GI=<($5$l$k(B @code{datasize} $B$NCM(B
                    565: $B$K@)8B$5$l$F$$$k$?$a(B, @code{-maxheap} $B$N;XDj$,$J$/$F$b0lDjNL0J>e$K(B
                    566: heap $B$r3MF@$G$-$J$$>l9g$,$"$k$N$GCm0U(B.)
1.2       noro      567: \E
                    568: \BEG
                    569: This option sets an upper limit of the heap size. The unit is Bytes.
                    570: Note that the size is already limited by the value of @code{datasize}
                    571: displayed by the command @code{limit} on UNIX.
                    572: \E
1.1       noro      573: @end table
                    574:
1.2       noro      575: \BJP
1.1       noro      576: @node $B4D6-JQ?t(B,,, Risa/Asir
                    577: @section $B4D6-JQ?t(B
1.2       noro      578: \E
                    579: \BEG
                    580: @node Environment variable,,, Risa/Asir
                    581: @section Environment variable
                    582: \E
1.1       noro      583:
                    584: @noindent
1.2       noro      585: \BJP
1.1       noro      586: @b{Asir} $B$N<B9T$K4X$9$k$$$/$D$+$N4D6-JQ?t$,B8:_$9$k(B. UNIX $B>e$G$O4D6-JQ?t(B
                    587: $B$O(B shell $B$N%3%^%s%I%i%$%s$+$iD>@\@_Dj$9$k$+(B, shell $B$N(B rc $B%U%!%$%k$G@_Dj(B
                    588: $B$9$k(B. Windows NT $B$G$O(B, [$B@_Dj(B]->[$B%7%9%F%`(B]->[$B4D6-(B] $B$G@_Dj$9$k(B. Windows 95/98
                    589: $B$G$O(B, @samp{c:\autoexec.bat} $B$K=q$$$F(B reboot $B$9$k(B.
1.2       noro      590: \E
                    591: \BEG
                    592: There exist several environment variables concerning with an execution
                    593: of @b{Asir}. On UNIX, an environment variable is set from shells, or
                    594: in rc files of shells. On Windows NT, it can be set from [Control Panel]
                    595: ->[Environment]. On Windows 95/98, it can be set in @samp{c:\autoexec.bat}.
                    596: Note that the setting takes effect after rebooting the machine on Windows
                    597: 95/98.
                    598: \E
1.1       noro      599: @itemize @bullet
                    600: @item
                    601: @code{ASIR_KEY}
                    602:
1.2       noro      603: \BJP
1.1       noro      604: UNIX $BHG$G$O(B, @b{Asir} $B$,5/F0$5$l$?%^%7%s$KBP$9$k(B @code{key} $B$,$J$1(B
                    605: $B$l$P$=$N%^%7%s>e$G(B @b{Asir} $B$OF0:n$7$J$$(B. @code{key} $B$O(B 16 $B?J(B 8
                    606: $B7e(B 3 $B%o!<%I$+$i$J$j(B,
1.2       noro      607: \E
                    608: \BEG
                    609: @b{Asir} shall not work unless a @code{key} for the machine
                    610: on which @b{Asir} is invoked is given.
                    611: The @code{key} consists of a string which denotes 3 word hexadecimal
                    612: number, each of which has 8 hexadecimal digits.
                    613: In order to run @b{Asir} for several machines,
                    614: several @code{key}'s can be written together on a same file as follows.
                    615: \E
1.1       noro      616: @example
                    617: % cat asir_key
                    618: cf6f236c 61a35091 dddc4529 geisha
                    619: 82281685 d1929945 a8bd24ca yorktown
                    620: 34b75d30 63f8df93 3e881113 nyanchu
                    621: @end example
                    622:
1.2       noro      623: \BJP
1.1       noro      624: $B$H$$$&7A$GJ#?tBf$N%^%7%s$KBP$9$k(B @code{key} $B$r0l$D$N%U%!%$%k$K$^$H$a$F(B
                    625: $B=q$/$3$H$,$G$-$k(B. @code{key} $B$N8e$m$OL5;k$5$l$k$N$G(B, $B%3%a%s%H$r=q$/(B
                    626: $B$3$H$,$G$-$k(B. @code{key} $B$r4^$`%U%!%$%k$O(B, $B0J2<$N=g$G%5!<%A$5$l$k(B.
1.2       noro      627: \E
                    628: \BEG
                    629: The text after each @code{key} is neglected to the end-of-line.
                    630: This is convenient to comment on the respective @code{key}.
                    631: Files containing @code{key}'s are searched by the following order.
                    632: \E
1.1       noro      633:
                    634: @enumerate
                    635: @item
1.2       noro      636: \JP $B4D6-JQ?t(B @code{ASIR_KEY} $B$K;XDj$5$l$?%U%!%$%k(B
                    637: \EG File set to environment @code{ASIR_KEY}
1.1       noro      638:
                    639: @item
1.2       noro      640: \JP $B%+%l%s%H%G%#%l%/%H%j$N(B @samp{asir_key}
                    641: \EG File @samp{asir_key} on the current directory.
1.1       noro      642:
                    643: @item
1.2       noro      644: \BJP
1.1       noro      645: $B4D6-JQ?t(B @code{ASIR_LIBDIR} $B$G;XDj$5$l$?%G%#%l%/%H%j(B ($B;XDj$,$J$1$l$P(B
                    646: @samp{/usr/local/lib/asir}) $B$N(B @samp{asir_key}
1.2       noro      647: \E
                    648: \BEG
                    649: Files on the directory specified by environment @code{ASIR_LIBDIR}.
                    650: (File @samp{asir_key} on @samp{/usr/local/lib/asir/},
                    651: if environment @code{ASIR_LIBDIR} is not set.)
                    652: \E
                    653:
1.1       noro      654: @end enumerate
                    655:
                    656: @item
                    657: @code{ASIR_LIBDIR}
                    658:
1.2       noro      659: \BJP
1.1       noro      660: @b{Asir} $B$N%i%$%V%i%j%G%#%l%/%H%j(B, $B$9$J$o$A%f!<%68@8l$G=q$+$l$?%U%!%$%k(B
                    661: $B$J$I$,$*$+$l$k%G%#%l%/%H%j(B. $B;XDj$,$J$$>l9g(B UNIX $BHG$G$O(B
                    662: @samp{/usr/local/lib/asir}, Windows $BHG$G$O(B Asir $B%a%$%s%G%#%l%/%H%j$N2<$N(B
                    663: @samp{lib} $B%G%#%l%/%H%j$,MQ$$$i$l$k(B.
1.2       noro      664: \E
                    665: \BEG
                    666: The library directory of @b{Asir}, i.e., the directory where
                    667: , for example, files containing programs written in @b{Asir}.
                    668: If not specified, on UNIX, @samp{/usr/local/lib/asir} is used by default.
                    669: On Windows, @samp{lib} in @b{Asir root directory} is used by default.
                    670: This environment will be useful in a case where @b{Asir} binaries
                    671: are installed on a private directory of the user.
                    672: \E
1.1       noro      673:
                    674: @item
                    675: @code{ASIRLOADPATH}
                    676:
1.2       noro      677: \BJP
1.1       noro      678: $B%m!<%I$5$l$k%U%!%$%k$,$"$k%G%#%l%/%H%j$r(B UNIX $B$N>l9g(B ':',
                    679: Windows$B$N>l9g(B ';' $B$G6h@Z$C$FJB$Y$k(B. $B%G%#%l(B
                    680: $B%/%H%j$O:8$+$i=g$K%5!<%A$5$l$k(B. $B$3$N;XDj$,$J$$>l9g(B, $B$*$h$S;XDj$5$l$?(B
                    681: $B%U%!%$%k$,(B @code{ASIRLOADPATH} $B$K$J$+$C$?>l9g(B, $B%i%$%V%i%j%G%#%l%/%H%j(B
                    682: $B$b%5!<%A$5$l$k(B.
1.2       noro      683: \E
                    684: \BEG
                    685: This environment specifies directories which contains files to be
                    686: loaded by @b{Asir} command @code{load()}.
                    687: Directories are separated by a `:' on UNIX, a ';' on Windows respectively.
                    688: The search order is from the left to the right.
                    689: After searching out all directories in @code{ASIRLOADPATH},
                    690: or in case of no specification at all,
                    691: the library directory will be searched.
                    692: \E
1.1       noro      693: @item
                    694: @code{HOME}
                    695:
1.2       noro      696: \BJP
1.1       noro      697: @var{-norc} $B%*%W%7%g%s$D$-$G5/F0$7$J$$>l9g(B, @samp{$HOME/.asirrc}$B$,$"$l$P(B,
                    698: $BM=$a$3$N%U%!%$%k$r<B9T$9$k(B. @code{HOME} $B$,@_Dj$5$l$F$$$J$$>l9g(B, UNIX $BHG(B
                    699: $B$G$O$J$K$bFI$^$J$$$,(B, Windows $BHG$G$O(B Asir $B%a%$%s%G%#%l%/%H%j(B
                    700: (@code{get_rootdir()} $B$GJV$5$l$k%G%#%l%/%H%j(B) $B$N(B @samp{.asirrc} $B$rC5$7(B,
                    701: $B$"$l$P$=$l$r<B9T$9$k(B.
1.2       noro      702: \E
                    703: \BEG
                    704: If @b{Asir} is invoked without @var{-norc}, @samp{$HOME/.asirrc}, if exists,
                    705: is executed. If @code{HOME} is not set, nothing is done on UNIX. On Windows,
                    706: @samp{.asirrc} in @b{Asir root directory} is executed if it exists.
                    707: \E
1.1       noro      708: @end itemize
                    709:
1.2       noro      710: \BJP
1.1       noro      711: @node $B5/F0$+$i=*N;$^$G(B,,, Risa/Asir
                    712: @section $B5/F0$+$i=*N;$^$G(B
1.2       noro      713: \E
                    714: \BEG
                    715: @node Starting and Terminating an Asir session,,, Risa/Asir
                    716: @section Starting and Terminating an @b{Asir} session
                    717: \E
1.1       noro      718:
                    719: @noindent
1.2       noro      720: \JP @b{Asir} $B$r5/F0$9$k$H(B,
                    721: \BEG
                    722: Run @b{Asir}, then the copyright notice and the first prompt
                    723: will appear on your screen,
                    724: and a new @b{Asir} session will be started.
                    725: \E
                    726:
1.1       noro      727: @example
                    728: [0]
                    729: @end example
                    730:
                    731: @noindent
1.2       noro      732: \BJP
1.1       noro      733: $B$J$k%W%m%s%W%H$,I=<($5$l(B, $B%;%C%7%g%s$,3+;O$9$k(B. @samp{$HOME/.asirrc}
                    734: (Windows $BHG$N>l9g(B, @code{HOME} $B@_Dj$5$l$F$$$J$$>l9g$K$O(B @code{get_rootdir()}
                    735: $B$GJV$5$l$k%G%#%l%/%H%j$K$"$k(B @samp{.asirrc})
                    736: $B$,B8:_$7$F$$$k>l9g(B, $B$3$N%U%!%$%k$r(B @b{Asir} $B%f!<%68@8l$G$+$+$l$?(B
                    737: $B%U%!%$%k$H8+$J$7(B, $B2r<a<B9T$9$k(B.
1.2       noro      738: \E
                    739: \BEG
                    740: When initialization file @samp{$HOME/.asirrc} exists,
                    741: @b{Asir} interpreter executes it at first taking it as a program
                    742: file written in @b{Asir}.
                    743: \E
1.1       noro      744:
                    745: @noindent
1.2       noro      746: \BJP
1.1       noro      747: $B%W%m%s%W%H$OF~NO$NHV9f$rI=$9(B. $B%;%C%7%g%s$O(B, @code{end;} $B$^$?$O(B
                    748: @code{quit;} $B$rF~NO$9$k$3$H$K$h$j=*N;$9$k(B. $BF~NO$O(B, @samp{;} $B$^$?$O(B
                    749: @samp{$} $B$^$G$r0l6h@Z$j$H$7$FI>2A$5$l$k(B. @samp{;} $B$N$H$-7k2L$OI=<($5$l(B,
                    750: @samp{$} $B$N$H$-I=<($5$l$J$$(B.
1.2       noro      751: \E
                    752: \BEG
                    753: The prompt indicates the sequential number of your input commands to
                    754: @b{Asir}.
                    755: The session will terminate when you input @code{end;} or @code{quit;}
                    756: to @b{Asir}.
                    757: Input commands are evaluated statement by statement.
                    758: A statement normally ends with its terminator
                    759: @samp{;} or @samp{$}.
                    760: (There are some exceptions. See, syntax of @b{Asir}.)
                    761: The result will be displayed when the command, i.e. statement,
                    762: is terminated by a @samp{;},
                    763: and will not when terminated by a @samp{$}.
                    764: \E
1.1       noro      765:
                    766: @example
                    767: % asir
                    768: [0] A;
                    769: 0
                    770: [1] A=(x+y)^5;
                    771: x^5+5*y*x^4+10*y^2*x^3+10*y^3*x^2+5*y^4*x+y^5
                    772: [2] A;
                    773: x^5+5*y*x^4+10*y^2*x^3+10*y^3*x^2+5*y^4*x+y^5
                    774: [3] a=(x+y)^5;
                    775: evalpv : invalid assignment
                    776: return to toplevel
                    777: [3] a;
                    778: a
                    779: [4] fctr(A);
                    780: [[1,1],[x+y,5]]
                    781: [5] quit;
                    782: %
                    783: @end example
                    784:
                    785: @noindent
1.2       noro      786: \BJP
1.1       noro      787: $B$3$NNc$G$O(B, @code{A}, @code{a}, @code{x}, @code{y} $B$J$kJ8;z$,;HMQ$5$l$F$$$k(B.
                    788: @code{A} $B$O%W%m%0%i%`$K$*$1$kJQ?t$G(B, @code{a}, @code{x}, @code{y} $B$O?t3XE*(B
                    789: $B$J0UL#$G$NITDj85$G$"$k(B. $B0lHL$K%W%m%0%i%`JQ?t$OBgJ8;z$G;O$^$j(B,
                    790: $BITDj85$O>.J8;z$G;O$^$k(B. $B$3$NNc$G$o$+$k$h$&$K(B, $B%W%m%0%i%`JQ?t$O(B,
                    791: $B?t(B, $B<0$J$I$r3JG<$7$F$*$/$?$a$N$b$N$G$"$j(B, C $B8@8l$J$I$K$*$1$kJQ?t$KBP1~$9$k(B.
                    792: $B0lJ}(B, $BITDj85$O$=$l<+?H$GCM$r;}$D$3$H$O$G$-$:(B, $B=>$C$F(B, $BITDj85$KBP$9$k(B
                    793: $BBeF~$O5v$5$l$J$$(B. $B8e$K<($9$,(B, $BITDj85$KBP$9$kBeF~$O(B, $BAH$_9~$_H!?t(B @code{subst()}
                    794: $B$K$h$jL@<(E*$K9T$o$l$k(B.
1.2       noro      795: \E
                    796: \BEG
                    797: In the above example, names @code{A}, @code{a}, @code{x} and @code{y}
                    798: are used to identify mathematical and programming objects.
                    799: There, the name @code{A} denotes a program variable
                    800: (some times called simply as a program variable.)
                    801: while the other names, @code{a}, @code{x} and @code{y}, denote
                    802: mathematical objects, that is, indeterminates.
                    803: In general, program variables have names which begin with
                    804: capital letters, while names of indeterminates begin with
                    805: small letters.
                    806: As you can see in the example, program variables are used to hold and
                    807: keep objects, such as numbers and expressions, as their values,
                    808: just like variables in C programming language.
                    809: Whereas, indeterminates cannot have values so that assignment to
                    810: indeterminates are illegal.
                    811: If one wants to get a result by substituting a value for an indeterminate
                    812: in an expression, it is achieved by the function @code{subst} as the
                    813: value of the function.
                    814: \E
1.1       noro      815:
1.2       noro      816: \BJP
1.1       noro      817: @node $B3d$j9~$_(B,,, Risa/Asir
                    818: @section $B3d$j9~$_(B
1.2       noro      819: \E
                    820: \BEG
                    821: @node Interruption,,, Risa/Asir
                    822: @section Interruption
                    823: \E
1.1       noro      824:
                    825: @noindent
1.2       noro      826: \BJP
1.1       noro      827: $B7W;;$r<B9TCf$K3d$j9~$_$r$+$1$?$$>l9g(B, $B3d$j9~$_%-%c%i%/%?(B($BDL>o$O(B
                    828: @kbd{C-c}, DOS $BHG$G$O(B @kbd{C-x}, Mac $BHG$G$O(B
                    829: @code{command+}@samp{.} ) $B$rF~NO$9$k(B.
1.2       noro      830: \E
                    831: \BEG
                    832: To interrupt the @b{Asir} execution, input an interrupt character
                    833: from the keyboard.  A @kbd{C-c} is usually used for it.
                    834: (Notice: @kbd{C-x} for DOS version; @code{command+}@samp{.} for Macintosh
                    835: version.)
                    836: \E
1.1       noro      837:
                    838: @example
                    839: @@ (x+y)^1000;
                    840: @kbd{C-c}interrupt ?(q/t/c/d/u/w/?)
                    841: @end example
                    842:
                    843: @noindent
1.2       noro      844: \JP $B3FA*Br;h$N0UL#$O<!$NDL$j(B.
                    845: \EG Here, the meaning of options are as follows.
1.1       noro      846:
                    847: @table @code
1.2       noro      848: \BJP
1.1       noro      849: @item q
                    850: @b{Asir} $B$r=*N;$9$k(B. ($B3NG'$"$j(B)
                    851: @item t
                    852: $B%H%C%W%l%Y%k$KLa$k(B. ($B3NG'$"$j(B)
                    853: @item c
                    854: $B<B9T$r7QB3$9$k(B.
                    855: @item d
                    856: $B%G%P%C%0%b!<%I$KF~$k(B. $B%G%P%C%,$K4X$7$F$O(B @xref{$B%G%P%C%,(B}.
                    857: @item u
1.3     ! noro      858: @code{register_handler()} (@pxref{ox_reset ox_intr register_handler}) $B$GEPO?$5$l$?(B
1.1       noro      859: $B4X?t$r<B9T8e%H%C%W%l%Y%k$KLa$k(B. ($B3NG'$"$j(B)
                    860: @item w
                    861: $BCfCGE@$^$G$NH!?t$N8F$S=P$7Ns$rI=<($9$k(B.
                    862: @item ?
                    863: $B3FA*Br;h$N0UL#$r@bL@$9$k(B.
1.2       noro      864: \E
                    865: \BEG
                    866: @item q
                    867: Terminates @b{Asir} session. (Confirmation requested.)
                    868: @item t
                    869: Returns to toplevel. (Confirmation requested.)
                    870: @item c
                    871: Resumes to continue the execution.
                    872: @item d
                    873: Enters debugging mode at the next statement of the @b{Asir} program,
                    874: if @b{Asir} has been executing a program loaded from a file.
                    875: Note that it will sometimes take a long time before entering
                    876: debugging mode when @b{Asir} is executing basic functions in the
                    877: algebraic engine, (e.g., arithmetic operation, factorization etc.)
                    878: Detailed description about the debugger will be given in @ref{Debugger}.
                    879: @item u
                    880: After executing a function registered by @code{register_handler()}
1.3     ! noro      881: (@pxref{ox_reset ox_intr register_handler}), returns to toplevel. A confirmation
1.2       noro      882: is prompted.
                    883: @item w
                    884: Displays the calling sequence up to the interruption.
                    885: @item ?
                    886: Show a brief description of options.
                    887: \E
1.1       noro      888: @end table
                    889:
1.2       noro      890: \BJP
1.1       noro      891: @node $B%(%i!<=hM}(B,,, Risa/Asir
                    892: @section $B%(%i!<=hM}(B
1.2       noro      893: \E
                    894: \BEG
                    895: @node Error handling,,, Risa/Asir
                    896: @section Error handling
                    897: \E
1.1       noro      898:
                    899: @noindent
1.2       noro      900: \BJP
1.1       noro      901: $BAH$_9~$_H!?t$KIT@5$J7?$N0z?t$rEO$7$?>l9g$J$I$K$O<B9T$,CfCG$5$l$k$,(B,
                    902: $B%f!<%6H!?t$NCf$G%(%i!<$,5/$-$?>l9g$K$O%H%C%W%l%Y%k$KLa$kA0$K<+F0E*$K%G%P%C%0(B
                    903: $B%b!<%I$KF~$k(B. $B$3$N>uBV$G(B
                    904: $B%(%i!<$N>l=j(B, $BD>A0$N0z?t$NCM$J$I$rD4$Y$k$3$H$,$G$-$k(B.
                    905: $BI=<($5$l$k%(%i!<%a%C%;!<%8$O$5$^$6$^$G$"$j(B, $BFbIt$NH!?tL>$K0z$-B3$$$F(B
                    906: $B%a%C%;!<%8$,I=<($5$l$k(B. $B$3$l$O(B, $B8F$S=P$5$l$?AH$_9~$_H!?t(B
                    907: $B$HI,$:$7$bBP1~$O$7$J$$(B.
1.2       noro      908: \E
                    909: \BEG
                    910: When arguments with illegal types are given to a built-in function,
                    911: an error will be detected and the execution will be quit.
                    912: In many cases, when an error is detected in a built-in function,
                    913: @b{Asir} automatically enters debugging mode before coming back
                    914: to toplevel.
                    915: At that time, one can examine the state of the program,
                    916: for example, inspect argument values just before the error occurred.
                    917: Messages reported there are various depending on cases.  They are
                    918: reported after the internal function name.  The internal function name
                    919: sometimes differs from the built-in function name that is specified by
                    920: the user program.
                    921: \E
1.1       noro      922:
                    923: @noindent
1.2       noro      924: \BJP
1.1       noro      925: $B$=$NB>(B, $B$5$^$6$^$J860x$K$h$jFbIt1i;;H!?t$K$*$$$F%(%i!<$,@8$:$k$3$H$,(B
                    926: $B$"$k(B. UNIX $BHG$N>l9g(B, $B$3$l$O<!$N$$$:$l$+$N(B
                    927: @code{internal error} $B$H$7$FJs9p$5$l(B, $BDL>o$N%(%i!<$HF1MM$K07$C$F(B,
                    928: $B%G%P%C%0%b!<%I$KF~$k(B.
1.2       noro      929: \E
                    930: \BEG
                    931: In the execution of internal functions, errors may happen by various
                    932: reasons.  The UNIX version of @b{Asir} will report those errors as one of
                    933: the following @code{internal error}'s, and enters debugging mode just
                    934: like normal errors.
                    935: \E
1.1       noro      936:
                    937: @table @code
                    938: @item SEGV
                    939: @itemx BUS ERROR
                    940:
1.2       noro      941: \BJP
1.1       noro      942: $BAH$_9~$_H!?t$K$h$C$F$O(B, $B0z?t$N7?$r87L)$K%A%'%C%/$;$:$K1i;;%k!<%A%s$K0z(B
                    943: $B$-EO$7$F$7$^$&$b$N$bB8:_$7$F$$$k(B. $B$3$N$h$&$J>u67$K$*$$$F(B,
                    944: $BIT@5$J%]%$%s%?(B, $B$"$k$$$O(B NULL $B%]%$%s%?$K$h$k%"%/%;%90cH?$,$"$C$?>l9g(B, $B$3$l$i(B
                    945: $B$N%(%i!<$H$J$k(B.
1.2       noro      946: \E
                    947: \BEG
                    948: Some of the built-in functions transmit their arguments to internal
                    949: operation routines without strict type-checking.  In such cases,
                    950: one of these two errors will be reported
                    951: when an access violation caused by an illegal pointer or a NULL pointer
                    952: is detected.
                    953: \E
1.1       noro      954:
                    955: @item BROKEN PIPE
                    956:
1.2       noro      957: \BJP
1.1       noro      958: $B%W%m%;%94VDL?.$K$*$$$F(B, $BAj<j@h$N%W%m%;%9$H$N4V$N%9%H%j!<%`(B
                    959: $B$,4{$KB8:_$7$F$$$J$$>l9g(B ($BNc$($P4{$KAj<j@h$N%W%m%;%9$,=*N;$7$F$$$k>l9g$J$I(B)
                    960: $B$K(B, $B$=$N%9%H%j!<%`$KF~=PNO$7$h$&$H$7$?>l9g$K$3$N%(%i!<$H$J$k(B.
1.2       noro      961: \E
                    962: \BEG
                    963: In the process communication, this error will be reported if a process
                    964: attempts to read from or to write onto the partner process when the
                    965: stream to the partner process does not already exist, (e.g., terminated
                    966: process.)
                    967: \E
1.1       noro      968: @end table
                    969:
                    970: @noindent
1.2       noro      971: \BJP
1.1       noro      972: $B$3$l$i$O<B:]$K$O(B, $BAH$_9~$_H!?t$NF~8}$K$*$$$F(B, $B0z?t$r40A4$K%A%'%C%/(B
                    973: $B$9$k$3$H$K$h$jBgItJ,$OKI$2$k$,(B, $B<j4V$,B?$/$+$+$k$3$H$H(B, $B>l9g$K(B
                    974: $B$h$C$F$O8zN($rMn$9$3$H$K$b$J$k$?$a(B, $B$"$($F0z?t%A%'%C%/$O%f!<%6(B
                    975: $BG$$;$K$7$F$"$k(B.
1.2       noro      976: \E
                    977: \BEG
                    978: For UNIX version, even in such a case, the process itself does not
                    979: terminate because such an error can be caught by @code{signal()} and
                    980: recovered.
                    981: To remove this weak point, complete type
                    982: checking of all arguments are indispensable at the entry of a built-in
                    983: function, which requires an enormous amount of re-making efforts.
                    984: \E
1.1       noro      985:
1.2       noro      986: \BJP
1.1       noro      987: @node $B7W;;7k2L$*$h$SFC<l$J?t(B,,, Risa/Asir
                    988: @section $B7W;;7k2L(B, $BFC<l$J?t(B
1.2       noro      989: \E
                    990: \BEG
                    991: @node Referencing results and special numbers,,, Risa/Asir
                    992: @section Referencing results and special numbers
                    993: \E
1.1       noro      994:
                    995: @noindent
1.2       noro      996: \JP @code{@@} $B$O%(%9%1!<%WJ8;z$H$7$F;HMQ$5$l$k(B. $B8=:_<!$N$h$&$J5,Dj$,$"$k(B.
                    997: \BEG
                    998: An @code{@@} used for an escape character; rules currently in force
                    999: are as follows.
                   1000: \E
1.1       noro     1001: @table @code
1.2       noro     1002: \BJP
1.1       noro     1003: @item @@@var{n}
                   1004: @var{n} $BHVL\$N7W;;7k2L(B.
                   1005: @item @@@@
                   1006: $BD>A0$N7W;;7k2L(B.
                   1007: @item @@i
                   1008: $B5u?tC10L(B.
                   1009: @item @@pi
                   1010: $B1_<~N((B.
                   1011: @item @@e
                   1012: $B<+A3BP?t$NDl(B.
                   1013: @item @@
                   1014: 2 $B85BN(B GF(2) $B>e$N0lJQ?tB?9`<0$NJQ?t(B ($BITDj85(B).
                   1015: @item @@>, @@<, @@>=, @@<=, @@==, @@&&, @@||
                   1016: quantifier elimination $B$K$*$1$k(B, $B0l3,=R8lO@M}1i;;;R(B
1.2       noro     1017: \E
                   1018: \BEG
                   1019: @item @@@var{n}
                   1020: The evaluated result of @var{n}-th input command
                   1021: @item @@@@
                   1022: The evaluated result of the last command
                   1023: @item @@i
                   1024: The unit of imaginary number, square root of -1.
                   1025: @item @@pi
                   1026: The number pi,
                   1027: the ratio of a circumference of the circle and its diameter.
                   1028: @item @@e
                   1029: Napier's number, the base of natural logarithm.
                   1030: @item @@
                   1031: A generator of GF(2^m), a finite field of characteristic 2, over GF(2).
                   1032: It is a root of an irreducible univariate polynomial over GF(2)
                   1033: which is set as the defining polynomial of GF(2^m).
                   1034: @item @@>, @@<, @@>=, @@<=, @@==, @@&&, @@||
                   1035: Fist order logical operators. They are used in quantifier elimination.
                   1036: \E
1.1       noro     1037: @end table
                   1038:
                   1039: @example
                   1040: [0] fctr(x^10-1);
                   1041: [[1,1],[x-1,1],[x+1,1],[x^4+x^3+x^2+x+1,1],[x^4-x^3+x^2-x+1,1]]
                   1042: [1] @@@@[3];
                   1043: [x^4+x^3+x^2+x+1,1]
                   1044: [2] eval(sin(@@pi/2));
                   1045: 1.000000000000000000000000000000000000000000000000000000000
                   1046: [3] eval(log(@@e),20);
                   1047: 0.99999999999999999999999999998
                   1048: [4] @@0[4][0];
                   1049: x^4-x^3+x^2-x+1
                   1050: [5] (1+@@i)^5;
                   1051: (-4-4*@@i)
                   1052: [6] eval(exp(@@pi*@@i));
                   1053: -1.0000000000000000000000000000
                   1054: [7] (@@+1)^9;
                   1055: (@@^9+@@^8+@@+1)
                   1056: @end example
                   1057:
                   1058: @noindent
1.2       noro     1059: \BJP
1.1       noro     1060: $B%H%C%W%l%Y%k$G7W;;$5$l$?CM$O$3$N$h$&$K%R%9%H%j$H$7$F<h$j=P$72DG=$G$"$k$,(B,
                   1061: $B$3$N$3$H$O(B, $B%,%Y!<%8%3%l%/%?$K$H$C$F$OIiC4$r$b$?$i$92DG=@-$,$"$k(B. $BFC$K(B,
                   1062: $BBg$-$J<0$r%H%C%W%l%Y%k$G7W;;$7$?>l9g(B, $B$=$N8e$N(B GC $B;~4V$,5^B.$KA}Bg$9$k2D(B
                   1063: $BG=@-$,$"$k(B. $B$3$N$h$&$J>l9g(B, @code{delete_history()}
                   1064: (@pxref{delete_history,,@code{delete_history}}) $B$,M-8z$G$"$k(B.
1.2       noro     1065: \E
                   1066: \BEG
                   1067: As you can see in the above example,
                   1068: results of toplevel computation can be referred to
                   1069: by @code{@@} convention.
                   1070: This is convenient for users, while it sometimes imposes a heavy
                   1071: burden to the garbage collector.
                   1072: It may happen that GC time will rapidly increase after computing
                   1073: a very large expression at the toplevel.
                   1074: In such cases @code{delete_history()}
                   1075: (@pxref{delete_history,,@code{delete_history}}) takes effect.
                   1076: \E
1.1       noro     1077:
                   1078: