bc is an arbitrary precision numeric processing language.  Syntax is
similar to C, but differs in many substantial areas.  It supports
interactive execution of statements.  bc is a utility included in the
POSIX P1003.2/D11 draft standard.

This version was written to be a POSIX compliant bc processor with
several extensions to the draft standard.  Option flags are available
to cause warning or rejection of the extensions to the POSIX standard.
For those who want only POSIX bc with no extensions, a grammar is
provided for exactly the language described in the POSIX document.
The grammar (sbc.y) comes from the POSIX document.  The Makefile
contains rules to make sbc.  (for Standard BC)

Since the POSIX document does not specify how bc must be implemented,
this version does not use the historical method of having bc be a
compiler for the dc calculator.  This version has a single executable
that both compiles the language and runs the a resulting "byte code".
The "byte code" is NOT the dc language.

Also, included in the initial distribution is the library file
vfprintf.c for MINIX systems.  My minix 1.5 did not have this file.
Also, you should verify that vsprintf.c works correctly on your
system.

The extensions add some features I think are missing.  The major
changes and additions for bc are (a) names are allowed to be full
identifiers ([a-z][a-z0-9_]*), (b) addition of the &&, ||, and !
operators, (c) allowing comparison and boolean operations in any
expression, (d) addition of an else clause to the if statement, (e)
addition of a new standard function "read()" that reads a number from
the standard input under program control, (f) passing of arrays as
parameters by variable, (g) addition of the "halt" statement that is
an executable statement unlike the quit (i.e.  "if (1 == 0) quit" will
halt bc but "if (1 == 0) halt" will not halt bc.), and (h) the
addition of the special variable "last" that is assigned the value of
each print as the number is printed.

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                  217     459  47.3% -lh5- 8b56 Jul  8  2000 bc-1.06/acconfig.h
[generic]                 2182    4653  46.9% -lh5- 04bd Oct  3  2000 bc-1.06/aclocal.m4
[generic]                   99     120  82.5% -lh5- dca0 Sep 13  2000 bc-1.06/AUTHORS
[generic]                40542   92272  43.9% -lh5- 192a Feb  3 15:09 bc-1.06/bc/bc
[generic]                14298   57961  24.7% -lh5- 56ac Oct  3  2000 bc-1.06/bc/bc.c
[generic]                  355     739  48.0% -lh5- f822 Oct  3  2000 bc-1.06/bc/bc.h
[generic]                 4049   16011  25.3% -lh5- df95 Sep 20  2000 bc-1.06/bc/bc.y
[generic]                 2031    5022  40.4% -lh5- 5801 Sep 13  2000 bc-1.06/bc/bcdefs.h
[generic]                 1234    2728  45.2% -lh5- 7e12 Sep 13  2000 bc-1.06/bc/const.h
[generic]                 4993   17898  27.9% -lh5- 506a Sep 13  2000 bc-1.06/bc/execute.c
[generic]                   81      93  87.1% -lh5- 5a4a Jul  8  2000 bc-1.06/bc/fix-libmath_h
[generic]                  752    1469  51.2% -lh5- 8af5 Sep 13  2000 bc-1.06/bc/global.c
[generic]                 1814    4283  42.4% -lh5- f444 Sep 13  2000 bc-1.06/bc/global.h
[generic]                 2493    6300  39.6% -lh5- 0df7 Sep 13  2000 bc-1.06/bc/libmath.b
[generic]                  961    2431  39.5% -lh5- 3138 Oct 23  2000 bc-1.06/bc/libmath.h
[generic]                 2653    7640  34.7% -lh5- 08fa Sep 13  2000 bc-1.06/bc/load.c
[generic]                 3128    7966  39.3% -lh5- 490a Sep 13  2000 bc-1.06/bc/main.c
[generic]                 3125    9312  33.6% -lh5- a134 Feb  3 12:44 bc-1.06/bc/Makefile
[generic]                  505    1059  47.7% -lh5- ad95 Sep  8  2000 bc-1.06/bc/Makefile.am
[generic]                 3110    9352  33.3% -lh5- fd71 Nov 15  2000 bc-1.06/bc/Makefile.in
[generic]                 1809    5265  34.4% -lh5- e5f0 Sep 13  2000 bc-1.06/bc/proto.h
[generic]                 2829   10929  25.9% -lh5- 5cfe Sep 13  2000 bc-1.06/bc/sbc.y
[generic]                16945   59905  28.3% -lh5- 5a62 Oct  3  2000 bc-1.06/bc/scan.c
[generic]                 3357    9129  36.8% -lh5- 88ef Sep 13  2000 bc-1.06/bc/scan.l
[generic]                 5871   22784  25.8% -lh5- c194 Sep 13  2000 bc-1.06/bc/storage.c
[generic]                 5607   17819  31.5% -lh5- 3119 Sep 13  2000 bc-1.06/bc/util.c
[generic]                12020   35107  34.2% -lh5- 30fc Sep 28  2000 bc-1.06/ChangeLog
[generic]                  742    2140  34.7% -lh5- 0102 Feb  3 12:44 bc-1.06/config.cache
[generic]                  768    2235  34.4% -lh5- 925b Feb  3 12:44 bc-1.06/config.h
[generic]                  661    1923  34.4% -lh5- 3e97 Oct  3  2000 bc-1.06/config.h.in
[generic]                12426   47074  26.4% -lh5- b979 Feb  3 12:44 bc-1.06/config.log
[generic]                 3122   10882  28.7% -lh5- b449 Feb  3 12:44 bc-1.06/config.status
[generic]                20037   80967  24.7% -lh5- 343e Oct  3  2000 bc-1.06/configure
[generic]                  984    2367  41.6% -lh5- 26fc Jul  8  2000 bc-1.06/configure.in
[generic]                 7014   17992  39.0% -lh5- 4902 Sep 16  1999 bc-1.06/COPYING
[generic]                 9651   26532  36.4% -lh5- e3ce Jul  8  2000 bc-1.06/COPYING.LIB
[generic]                 1284    3104  41.4% -lh5- 2420 Sep 13  2000 bc-1.06/dc/array.c
[generic]                23170   51800  44.7% -lh5- 609b Feb  3 15:09 bc-1.06/dc/dc
[generic]                 1115    4170  26.7% -lh5- 61e4 Sep 13  2000 bc-1.06/dc/dc-proto.h
[generic]                  732    1400  52.3% -lh5- 30a2 Sep 13  2000 bc-1.06/dc/dc-regdef.h
[generic]                 1962    4315  45.5% -lh5- 96ae Jul  8  2000 bc-1.06/dc/dc.c
[generic]                 1099    2270  48.4% -lh5- 7b81 Sep 13  2000 bc-1.06/dc/dc.h
[generic]                 5509   18652  29.5% -lh5- 990d Aug 31  2000 bc-1.06/dc/eval.c
[generic]                 2724    7946  34.3% -lh5- 5310 Feb  3 12:44 bc-1.06/dc/Makefile
[generic]                  246     356  69.1% -lh5- c23d Sep  8  2000 bc-1.06/dc/Makefile.am
[generic]                 2707    7954  34.0% -lh5- 04e2 Nov 15  2000 bc-1.06/dc/Makefile.in
[generic]                 1921    4383  43.8% -lh5- 762e Jul  8  2000 bc-1.06/dc/misc.c
[generic]                 4010   13855  28.9% -lh5- 3efb Aug 31  2000 bc-1.06/dc/numeric.c
[generic]                 2948   11382  25.9% -lh5- c016 Sep 13  2000 bc-1.06/dc/stack.c
[generic]                 2120    5257  40.3% -lh5- d845 Sep 13  2000 bc-1.06/dc/string.c
[generic]                12267   34397  35.7% -lh5- f60b Sep 28  2000 bc-1.06/doc/bc.1
[generic]                12689   37674  33.7% -lh5- 84cc Oct  3  2000 bc-1.06/doc/bc.info
[generic]                12848   38375  33.5% -lh5- bfe7 Sep 28  2000 bc-1.06/doc/bc.texi
[generic]                 4728   13075  36.2% -lh5- 0dec Jul  8  2000 bc-1.06/doc/dc.1
[generic]                 5200   15365  33.8% -lh5- a16f Oct  3  2000 bc-1.06/doc/dc.info
[generic]                 5431   16786  32.4% -lh5- 093a Aug 31  2000 bc-1.06/doc/dc.texi
[generic]                 2913    9570  30.4% -lh5- 7c36 Feb  3 12:44 bc-1.06/doc/Makefile
[generic]                  200     293  68.3% -lh5- dee9 Sep 27  2000 bc-1.06/doc/Makefile.am
[generic]                 2887    9558  30.2% -lh5- 3c6b Nov 15  2000 bc-1.06/doc/Makefile.in
[generic]                64386  200195  32.2% -lh5- 48af Jul  8  2000 bc-1.06/doc/texinfo.tex
[generic]                  198     330  60.0% -lh5- d324 Jul  8  2000 bc-1.06/Examples/ckbook.b
[generic]                  546    1188  46.0% -lh5- da1c Jul  8  2000 bc-1.06/Examples/pi.b
[generic]                  323     633  51.0% -lh5- 3367 Jul  8  2000 bc-1.06/Examples/primes.b
[generic]                  359     710  50.6% -lh5- 885b Jul  8  2000 bc-1.06/Examples/twins.b
[generic]                  435     829  52.5% -lh5- cc48 Jul  8  2000 bc-1.06/FAQ
[generic]                 1894    4632  40.9% -lh5- d645 Jul  8  2000 bc-1.06/h/getopt.h
[generic]                 1613    4310  37.4% -lh5- 0da5 Oct  3  2000 bc-1.06/h/number.h
[generic]                 2892    7463  38.8% -lh5- 9cc6 Jul  8  2000 bc-1.06/INSTALL
[generic]                 1857    4771  38.9% -lh5- 0b99 Jul  8  2000 bc-1.06/install-sh
[generic]                 7451   21957  33.9% -lh5- f12f Jul  8  2000 bc-1.06/lib/getopt.c
[generic]                 1791    4448  40.3% -lh5- 1a8e Jul  8  2000 bc-1.06/lib/getopt1.c
[generic]                29644   79336  37.4% -lh5- 5b65 Feb  3 15:07 bc-1.06/lib/libbc.a
[generic]                 2598    7217  36.0% -lh5- 1b4b Feb  3 12:44 bc-1.06/lib/Makefile
[generic]                  351     631  55.6% -lh5- 3d39 Sep  8  2000 bc-1.06/lib/Makefile.am
[generic]                 2581    7225  35.7% -lh5- 4d2b Nov 15  2000 bc-1.06/lib/Makefile.in
[generic]                11906   41530  28.7% -lh5- 0d5b Oct  3  2000 bc-1.06/lib/number.c
[generic]                 1494    4577  32.6% -lh5- 18c8 Aug 31  2000 bc-1.06/lib/testmul.c
[generic]                  311     565  55.0% -lh5- 3c07 Sep 13  2000 bc-1.06/lib/vfprintf.c
[generic]                 3528   11414  30.9% -lh5- 3157 Feb  3 12:44 bc-1.06/Makefile
[generic]                  278     594  46.8% -lh5- b31f Jul  8  2000 bc-1.06/Makefile.am
[generic]                 3515   11415  30.8% -lh5- 5474 Nov 15  2000 bc-1.06/Makefile.in
[generic]                 1714    4639  36.9% -lh5- 6823 Jul  8  2000 bc-1.06/missing
[generic]                  387     730  53.0% -lh5- 6a5b Jul  8  2000 bc-1.06/mkinstalldirs
[generic]                  917    1917  47.8% -lh5- 2cb6 Sep 12  2000 bc-1.06/NEWS
[generic]                 1736    3522  49.3% -lh5- bc11 Aug 31  2000 bc-1.06/README
[generic]                   10      10 100.0% -lh0- f5e3 Feb  3 12:44 bc-1.06/stamp-h
[generic]                   10      10 100.0% -lh0- f5e3 Oct  3  2000 bc-1.06/stamp-h.in
[generic]                  120     192  62.5% -lh5- 1d93 Jul  8  2000 bc-1.06/Test/array.b
[generic]                  159     371  42.9% -lh5- d1d9 Jul  8  2000 bc-1.06/Test/arrayp.b
[generic]                  111     205  54.1% -lh5- 5146 Jul  8  2000 bc-1.06/Test/aryprm.b
[generic]                   57      70  81.4% -lh5- 0570 Jul  8  2000 bc-1.06/Test/atan.b
[generic]                  391     889  44.0% -lh5- 280b Jul  8  2000 bc-1.06/Test/BUG.bc
[generic]                  522    1348  38.7% -lh5- 2377 Jul  8  2000 bc-1.06/Test/checklib.b
[generic]                   72      82  87.8% -lh5- ebc8 Jul  8  2000 bc-1.06/Test/div.b
[generic]                   38      38 100.0% -lh0- 2f1e Jul  8  2000 bc-1.06/Test/exp.b
[generic]                   91     107  85.0% -lh5- bb85 Jul  8  2000 bc-1.06/Test/fact.b
[generic]                   75      89  84.3% -lh5- baae Jul  8  2000 bc-1.06/Test/jn.b
[generic]                   61      87  70.1% -lh5- 68da Jul  8  2000 bc-1.06/Test/ln.b
[generic]                   94     285  33.0% -lh5- 6a78 Jul  8  2000 bc-1.06/Test/mul.b
[generic]                   71     117  60.7% -lh5- c56c Jul  8  2000 bc-1.06/Test/raise.b
[generic]                 1382    2529  54.6% -lh5- 75f8 Jul  8  2000 bc-1.06/Test/signum
[generic]                   70     100  70.0% -lh5- 9d93 Jul  8  2000 bc-1.06/Test/sine.b
[generic]                   71     184  38.6% -lh5- d675 Jul  8  2000 bc-1.06/Test/sqrt.b
[generic]                  104     157  66.2% -lh5- 5253 Jul  8  2000 bc-1.06/Test/sqrt1.b
[generic]                   78     179  43.6% -lh5- 825e Jul  8  2000 bc-1.06/Test/sqrt2.b
[generic]                  503    1011  49.8% -lh5- cedd Jul  8  2000 bc-1.06/Test/testfn.b
[generic]                  181     260  69.6% -lh5- 912d Jul  8  2000 bc-1.06/Test/timetest
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total       107 files  452151 1347853  33.5%            Feb 13 19:39