version 1.0-971002v1_0_971002

https://cache.ruby-lang.org/pub/ruby/1.0/ruby-1.0-971002.tar.gz

Thu Oct  2 17:59:18 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-971002

Wed Oct  1 14:01:49 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* ext/marshal/marshal.c (w_byte): argument must be char.

Wed Oct  1 10:30:22 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* ext/marshal/marshal.c (marshal_dump): try to set binmode.

	* ext/marshal/marshal.c (r_object): forgot to re-regist structs in
	  the object table.

	* eval.c (ruby_options): call Init_ext() before any require()
 	  calls by `-r'.

Tue Sep 30 14:51:07 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970930

Fri Sep 30 14:29:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* ext/marshal/marshal.c (w_object): marshal dumped core.

Tue Sep 30 10:27:39 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* sample/test.rb: bignum test suits added.

Mon Sep 29 13:37:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* ruby.c (forbid_setid): forbid some options in suid mode.

Mon Sep 27 09:53:48 1997  EGUCHI Matsumoto  <eguchi@shizuokanet.or.jp>

	* bignum.c: modified for speeding.

Fri Sep 26 18:27:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* sample/from.rb: some extensions.

Mon Sep 29 13:15:56 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* parse.y (lhs): no more syntax error on `obj.CONSTANT = value'.

Fri Sep 26 14:41:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (ruby_run): deferred calling Init_ext() just before eval_node.

Fri Sep 26 13:27:24 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* io.c (io_isatty): forgot to return TRUE value.

Fri Sep 25 11:10:58 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>

	* eval.c: use _setjmp/_longjmp instead of setjmp/longjmp on some
	  platforms.

Wed Sep 24 17:43:13 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* string.c (Init_String): String#taint and String#taint? added.

Wed Sep 24 00:57:00 1997  Katsuyuki Okabe  <HGC02147@niftyserve.or.jp>

	* X68000 patch.

Tue Sep 23 20:42:30 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>

	* parse.y (node_newnode): SEGV on null node setup.

Mon Sep 22 11:22:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* ruby.c (ruby_prog_init): wrong safe condition check.

Sun Sep 21 14:46:02 1997  MAEDA shugo  <shugo@po.aianet.ne.jp>

	* error.c (exc_inspect): garbage added to classpath.

Fri Sep 19 11:49:23 1997    <matz@netlab.co.jp>

	* version 1.0-970919

	* parse.y (newtok): forgot to adjust buffer size when shrinking
	  the token buffer.

	* enum.c (enum_find): rb_eval_cmd() does not return value.

	* io.c (pipe_open): close fds on pipe exec. fcntl(fd, F_SETFD, 1)
	  no longer used.

Tue Sep 16 17:54:25 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* file.c (f_test): problem if wrong command specified.

	* ruby.c (ruby_prog_init): close stdaux and stdprn for MSDOS.

	* ruby.c (ruby_prog_init): should not add path from environment
	  variable, if ruby is running under seuid.

	* process.c (init_ids): check suid check for setuid/seteuid etc.

Mon Sep 15 00:42:04 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* regex.c (re_compile_pattern): \w{3} and \W{3} did not work.

Thu Sep 11 10:31:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970911

	* ext/socket/socket.c (sock_new): no setbuf() for NT.

	* io.c (rb_fopen,rb_fdopen): set close-on-exec for every fd.

Wed Sep 10 15:55:31 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970910

	* ext/marshal/marshal.c (r_bytes0): extra big length check.

Tue Sep  9 16:27:14 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* io.c (pipe_fptr_atexit): clean up popen()'ed fptr.

	* error.c (set_syserr): some system has error code that is bigger
	  than sys_nerr. grrr.

Tue Sep  9 16:27:14 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970909

	* error.c (set_syserr): some system has error code that is bigger
	  than sys_nerr. grrr.

Wed Sep  3 18:11:00 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970903

	* eval.c (f_load): expand path if fname begins with `~'.

Mon Sep  1 13:42:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (rb_call): alias occured in the module body caused SEGV.

Fri Aug 29 11:10:21 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* parse.y (yylex): spaces can follow =begin/=end.

	* variable.c (find_class_path): look for class_tbl also for
	  unnamed fundamental classes, such as Object, String, etc.

	* variable.c (rb_name_class): can't name class before String class
 	  is initilialized.

	* inits.c (rb_call_inits): unrecognized dependency from GC to
	  Array.

	* variable.c (find_class_path): could not find class if Object's
 	  iv_tbl is NULL.

Thu Aug 28 13:12:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* parse.y (yylex): revised `=begin' skip code.

	* eval.c (is_defined): separated from rb_eval().

Wed Aug 27 11:32:42 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* variable.c (fc_i): some classes/modules does not have iv_tbl.

	* variable.c (find_class_path): avoid inifinite loop.

Tue Aug 26 13:43:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (rb_eval): undef'ing non-existing method will raise
	  NameError exception.

	* object.c (class_s_new): needed to create metaclass too.

	* eval.c (error_print): no class name print for anonymous class.

	* eval.c (rb_longjmp): proper exception raised if raise() called
 	  without arguments, with $! or $@ set.

	* object.c (Init_Object): superclass()'s method argument setting
 	  was wrong again.

Mon Aug 25 11:53:11 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* sample/ruby-mode.el (ruby-parse-region): auto-indent now
 	  supports "\\" in the strings.

	* struct.c (struct_getmember): new API to get member value from C
	  language side.

Fri Aug 22 14:26:40 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (error_print): modified exception print format.

Thu Aug 21 16:10:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* sample/ruby-mode.el (ruby-calculate-indent): wrong indent level
	  calculated with keyword operators.

Thu Aug 21 11:55:41 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970821

Thu Aug 21 11:36:58 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* parse.y (arg): ary[0] += 1 cause SEGV

Wed Aug 20 14:24:42 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970820

	* eval.c (rb_call): infinite loop bug

Tue Aug 19 00:15:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* version 1.0-970819

	* eval.c (rb_call): did not raise ArgumentError if too many
 	  arguments more than optional arguments (without rest arg).

	* eval.c (rb_eval): did not work well for op_asgn2 (attribute
	  self assignment).

Mon Aug 18 09:25:56 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* object.c (inspect_i): did not display T_DATA instance variables.

	* parse.y: provides more accurate line number information.

	* eval.c (thread_value): include value's backtrace information in
	  the variable `$@'.

	* eval.c (f_abort): print backtrace and exit.

Sat Aug 16 00:17:44 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* object.c (class_s_new): do not make subclass of singleton class.

Fri Aug 15 15:49:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (call_trace_func): block context switch in the trace
          function.

	* eval.c (rb_eval): clear method cache at class extention.

Fri Aug 15 19:40:43 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* ext/socket/socket.c (Init_socket): small typo caused SEGV.

Tue Aug 12 16:02:18 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* variable.c: option variables: $-0, $-p(readonly), $-v,
	  $-I(load_path), $-a(readonly), $-K, $-d, $-F, $-i, $-l.

	* parse.y (yylex): ignore rd (ruby document) in the code.

Mon Aug 11 12:37:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* re.c (Init_Regexp): $-K as alias to the $KCODE.

	* io.c (Init_IO): new virtual variable $-i for the value of -i
 	  option.

	* enum.c (Init_Enumerable): include? as alias of member?

Fri Aug  8 11:16:50 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* io.c (io_foreach): now the record separator can be specified.

	* io.c (io_s_readlines): new method to read in whole file (or
 	  command output) from path.

	* ext/socket/socket.c (Init_socket): recvfrom did not work.

	* ext/socket/socket.c (sock_send): forgot to check nil for false
	  value.

Thu Aug  7 11:40:01 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* object.c (Init_Object): remove private_attr/public_attr.

Wed Aug  6 14:21:36 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* object.c (mod_attr): forgot to check nil for false value.

Mon Aug  4 11:50:28 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* variable.c (rb_class_path): scan class constants for anonymous
	  classes/modules to make up pathes.

Wed Jul 30 08:45:12 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (rb_eval): stop to cache const value in nodes.

Sat Jul 26 03:17:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* numeric.c (flo_to_s): wrong .0 at end.

Sat Jul 26 00:36:36 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* eval.c (error_print): always print exception type in the
 	  toplevel exception handler.

	* string.c (str_hash): wrong hash value.

Thu Jul 24 11:05:51 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>

	* string.c (uscore_get): proper error message for unset $_.

Wed Jul 23 09:56:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* object.c (obj_methods): returns list of method names of the
	  specified object.

	* class.c (mod_instance_methods): returns list of method names of
	  the class instnace.

Fri Jul 11 22:38:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* object.c (class_superclass): returns class's superclass
 	  itself. (1.1)

	* object.c (obj_type): returns object's class itself. (1.1)

	* class.c (mod_included_modules): list included modules.

	* object.c (class_superclass): raises error for Object.

Thu Jul  3 09:54:02 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (SETUP_ARGS): save source position, remove nd_line().

	* eval.c (rb_call): replace modulo by bit-masking.

	* eval.c (POP_SCOPE): force recycle scope object to reduce gc rate.

	* gc.c (obj_free): aboid calling run_final() when no finalizer is set.

	* eval.c (PUSH_VARS): do not allocate the dynamic scope's end-mark
	  object.

Wed Jul  2 14:25:07 1997  KIMURA Koichi  <kkimura@pure.cpdc.canon.co.jp>

	* Native mswin32 support.

Tue Jul  1 09:59:00 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970701

	* parse.y (mrhs): allow rest-star(*) in right hand side.

Tue Jun 24 19:04:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970624

Sat Jun 20 22:22:51 1997  Michio "Karl" Jinbo  <karl@marcer.nagaokaut.ac.jp>

	* eval.c: freebsd 3.0 <sys/select.h> support.

Fri Jun 20 01:24:45 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970620

	* gc.c: eliminate uninitilalized field of Hash, Array etc., to
	  avoid dumping core.

Thu Jun 19 01:29:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970619

	* string.c (str_split_method): wrong limit.

Sat Jun 14 01:54:16 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* class.c (rb_singleton_class): no singleton for special
	  constants (now raises exception).

	* eval.c (ruby_init): cbase in TOPLEVEL_BINDING need to be
	  initialized.

Sat Jun 14 01:01:16 1997  maeda shugo  <shugo@po.aianet.ne.jp>

	* array.c (sort_2): wrong comparison.

Sat Jun 14 00:53:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* hash.c (hash_foreach): safe iteration.

Fri Jun 13 14:04:56 1997  Michio "Karl" Jinbo  <karl@marcer.nagaokaut.ac.jp>

	* configure.in: -Bshareable option for netbsd.

Fri Jun 13 01:16:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* io.c (pipe_open): call io_unbuffered() only for writable pipes.

Thu Jun 12 01:14:15 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970612

	* ext/socket/socket.c (sock_new): use io_unbuffered().

	* ext/marshal/marshal.c (w_long): compact long format, which
	  supports 64 bit architectures (unless longs are >32 bit size).

	* ext/marshal/marshal.c: allows recursive data for marshaling.

	* parse.y (rb_intern): raise exception for non-internable string.

	* ext/marshal/marshal.c (marshal_load): allows direct loading from
 	  strings.

	* ext/marshal/marshal.c (marshal_dump): allows direct dump to strings.

	* ext/marshal/marshal.c (marshal_dump): interface changed.

Wed Jun 11 18:26:00 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* gc.c (rb_newobj): remove needless memset().

Mon Jun  9 13:03:43 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (rb_eval): reduce condition checks from while/until loop.

	* eval.c (rb_eval): wrong jump point for `next'.

Fri Jun  6 11:47:39 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ruby.c (ruby_set_argv): initialize dln_argv0 for dln_a_out.

	* ext/socket/socket.c (open_unix): display path name for exceptions.

	* ruby.c (proc_options): option -S did not work well.

Fri May 30 02:14:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970530

	* eval.c (eval): set $! properly if exception raised in eval().

	* io.c (io_write): now handles non T_FILE object.

	* io.c (io_defset): $< can be anything which has `write' method.

Thu May 29 15:40:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (eval): $@ is always an array (not string).

	* pack.c (pack_unpack): avoid corrupting memory for unexpected
	  input strings.

Wed May 28 12:46:13 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970528

	* process.c (rb_waitpid): do not block other threads.

Tue May 27 12:02:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (ruby_init): split initialize and processing command line
	  options.

	* ruby.c (ruby_options): ruby_init(0, 0, envp) dumps core.

Tue May 20 18:59:45 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* variable.c (rb_ivar_set): invalid instance variable access for
	  built-in object raises TypeError.

Fri May 16 17:32:21 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970516

	* dir.c (push_globs): was freeing non heap pointer.

	* gc.c: remove some duplicated prototypes.

	* ext/kconv/kconv.c: fix prototypes.

Fri May  9 11:38:59 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970509

	* gc.c (obj_free): avoid free(NULL).

	* eval.c (rb_check_safe_str): argument missing for TypeError().

Thu May  8 01:14:28 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* file.c (file_s_dirname): need to return "." for path without
	  slashes.

Wed May  7 19:18:48 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* process.c (f_fork): child processe does not inherit parent's
 	  itimer setting on linux.  call setitimer() again in the child
	  process.

Sat May  3 02:49:43 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ext/curses/curses.c: modified for portability and add to the
 	  standard distribution.

Wed Apr 30 00:34:00 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* file.c (file_s_size): returns 0 for empty files (not FALSE).

Fri Apr 25 02:17:50 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970425

	* eval.c (f_load): free unused name-table.

	* eval.c (f_load): copy local variable name-table.

	* gc.c (obj_free): avoid free(NULL).

	* eval.c (rb_eval): forgot to make link from the scope object to
	  NODE_SCOPE.  It may crash the interpreter.

Thu Apr 24 00:35:09 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* random.c (f_srand): save old seed anyway.  srand() returns no
 	  value on some systems.

	* gc.c (obj_free): avoid double free of the local variable name
	  table.

	* parse.y (top_local_setup): modify realloc to handle offset.

Tue Apr 22 12:58:26 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970422

Thu Apr 17 00:40:51 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* configure.in (rb_cv_bsdpgrp): proper check for BSD
	  setpgrp/setpgrp.

Wed Apr 16 16:14:02 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (proc_call): proc called in other thread must be orphan.

Tue Apr 15 10:46:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970415

	* gc.c (obj_free): NODE_SCOPE marked from SCOPE object.

	* gc.c (gc_mark): some nodes marked wrong.

	* process.c (proc_getpgrp): wrong argument

Fri Apr 14 18:32:42 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970414

Fri Apr 12 01:20:12 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ruby.h: String pointer changed to unsigned char.

Fri Apr 11 10:27:29 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970411

	* Makefile.in: create libruby.a before linking ruby.

	* string.c (str_strip_bang): >0x80 characters for isspace().

	* eval.c (proc_call): set safe-level temporally

	* eval.c (proc_s_new): save safe-level in the proc context.

	* eval.c (rb_eval): no class/module extention in safe mode.

Thu Apr 10 02:10:41 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* gc.c (gc_mark): remove some pointer checks for speeding up.

	* ruby.c (ruby_options): set $0 temporally for -r option.

	* eval.c: built-in security feature.

	* gc.c (gc_sweep): do not free nodes during compile.

	* parse.y (yycompile): set flag when compiling.

Wed Apr  9 10:19:02 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ruby.c: forgot to include <ctype.h> for isspace().

	* file.c: provide S_ISREG for some platforms.

	* io.c (Init_IO): added some $< operations.

	* lib/ping.rb: check host upness using TCP echo.

Tue Apr  8 00:10:15 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* io.c (arg_read): bug with 0 length input.

Mon Apr  7 11:36:16 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ext/fcntl/fcntl.c: module for fcntl constants.

	* eval.c (rb_alias): bug when original was an alias.

	* parse.y (primary): syntax to access singleton class.

	* eval.c (mod_public_method): method's to specify visibitily of
	  the class methods.  make_method_{public,private} removed.

Fri Apr  4 21:43:57 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970404

	* gc.c (obj_free): finalizer added for experiment.

Thu Apr  3 02:12:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (thread_schedule): make Fatal rise on main_thread on
	  deadlocks.

	* eval.c (thread_join): raise ThreadError instead of Fatal, in
	  case of deadlock.

	* regex.c (re_compile_fastmap): uninitialized local variable.

	* parse.y (parse_regx): new option //[nes] to specify character
	  code for regexp literals.  Last specified code option is valid.

	* re.c (reg_s_new): addtional 3rd argument to specify compiled
 	  regexp's character code.

	* re.c (reg_new_1): regexp character code can be specified for
	  each regexp object.

Wed Apr  2 14:51:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (thread_create): handle uncaught throw.

	* eval.c (thread_create): halt on some deadlock conditions.

	* regex.c (is_in_list): wrong result for non-mbc higher-byte
	  characters.

	* regex.c (re_match): wrong skip for multi-byte characters.

	* regex.c (re_compile_fastmap): wrong fastmap in non-mbc mode.

	* hash.c (Init_Hash): hash compatible features added to ENV.

Tue Apr  1 15:24:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (obj_extend): remove Object#extend as an iterator which
 	  is in experimental state, since it unveils internal singleton
 	  classes.

Mon Mar 31 14:29:39 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970331

Sun Mar 30 19:40:57 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* parse.y (terms): avoided win32 gcc's optimization bug.

Sat Mar 29 11:21:58 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* struct.c (make_struct): St[val,..] creates new structure.

Fri Mar 28 11:24:51 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (obj_make_private): new method make_method_{public,private}
	  to change visibility of singleton methods.

	* regex.c (re_compile_pattern): enables numeric literal >= 0x80 in
	  the character class.

	* regex.c (re_compile_pattern): enabled numeric literal >= 0x80,
	  in multibyte mode.

	* regex.c (re_compile_fastmap): modified exantn and charset(_not)
	  to set fastmap for higher bytes properly.

	* regex.c (is_in_list): now matches numeric literals.

Thu Mar 27 13:34:20 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* pack.c (pack_unpack): extra null byte after unpacked string.

Wed Mar 26 15:20:34 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* regex.c (re_compile_pattern): register numbers must be fit in a
 	  byte (0 <= regnum <= 0xff).

	* regex.c (re_compile_fastmap): forgot to set mbchar map for
 	  charset_not if RE_MBCTYPE is on.

	* regex.c (re_compile_pattern): set list bits for multi-byte
	  characters for \W, \S, \D in range expression.

	* object.c (obj_is_kind_of): defined that nil itself is kind of
 	  nil.  TRUE is kind of TRUE, FALSE is kind of FALSE likewise.
  	  This change makes `obj.kind_of?(eval(obj.type))' always true.

Tue Mar 25 14:08:43 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* lib/English.rb: provides nicer English alias for the variables.

	* parse.y (expr): alias $var1 $var2 makes alias of the global
	  variable.

Mon Mar 24 18:23:20 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970324

Thu Mar 20 22:04:59 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (mod_modfunc): forget to clear method cache.

Wed Mar 19 17:06:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* parse.y (program): set methods' default private/public status
	  correctly under eval().

	* eval.c (eval): set the_class correctly while evaluating string.

Tue Mar 18 12:23:53 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (eval): yield can be called from eval().

	* version 1.0-970318

	* parse.y (program): regexp in condition expression should do
	  matching operation with $_.

	* re.c (reg_regsub): wrong substitution.

Fri Mar 14 14:36:28 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* hash.c (hash_invert): returns value to key mapping of the
	  associative array.

	* ext/socket/extconf.rb: set environment variable SOCKS_SERVER to
	  compile with libsocks.a.

	* ext/socket/socket.c (socks_s_open): SOCKSsocket class to access
	  internet via SOCKS library.

	* sprintf.c (f_sprintf): unsigned formats display leading double
 	  dots for imaginary sequence of signed bit to the left.

	* sprintf.c (f_sprintf): correct width and precision formatting
	  for big integers.

	* parse.y (yylex): enables negative hex/octal numbers and `_' in
	  non-decimal numbers.

	* sprintf.c (f_sprintf): %u added for unsigned decimal format.

Thu Mar 13 10:24:27 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* sprintf.c (f_sprintf): wrong output for bignums.

	* array.c (ary_reverse_each): iterates in reverse order.

	* pack.c (pack_unpack): L unpacked signed long.

	* io.c (f_backquote): now returns an empty string for no output.

Wed Mar 12 10:20:30 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ext/socks/socks.c: socket module with socks library.

Mon Mar 10 20:44:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* re.c (reg_regsub): \& for substitution.  \`, \', and \+ are
	  avaiable also.

Thu Mar  6 01:47:03 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970306

	* sample/rubydb.el (gud): ruby debugger emacs interface

	* lib/debug.rb: ruby debugger

	* parse.y (exprs): more accurate line number display.

Wed Mar  5 21:31:46 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970305

Tue Mar  4 12:28:32 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ruby.c (proc_options): search through RUBYPATH and PATH for
	  option -S.

Mon Mar  3 22:44:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (thread_status): returns nil for exception terminated
	  threads.

	* eval.c (thread_value): re-raise exceptions.

Sat Mar  1 00:59:47 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (rb_eval): restore $! value after rescue clause, to
	  re-raise exceptions correctly.

Fri Feb 28 16:43:38 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970228

Thu Feb 27 11:23:41 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (rb_yield_0): redo raises exception

	* eval.c (thread_schedule): bug in interrupt handling by rescue.

Wed Feb 26 00:55:36 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (eval): forgot to restore dynamic local variable
	  bindings.

Tue Feb 25 11:22:08 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ext/aix_ld.rb: AIX dynamic load support (not tested).

	* eval.c (rb_eval): wrong return value for defined? super.

	* error.c (exception): more error check.

	* re.c (reg_regsub): wrong substitution when sub expanded to null
 	  string.

Fri Feb 21 13:01:47 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970221

	* eval.c (f_require): volatile added.  register variable was
 	  recycled, so that GC did not mark that variable.

	* object.c (Init_Object): forget to mark main object (was mostly
	  ok, but made trouble with early GC.)

Thu Feb 20 11:50:50 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970220

Thu Feb 20 11:25:50 1997  Yasuo OHBA  <jammy@shljapan.co.jp>

	* lib/date.rb: update

Thu Feb 20 08:25:57 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* parse.y (yylex): forgot tokfix() before rb_intern().

	* lib/tk.rb (TkVariable): give up using trace_var.

Wed Feb 19 00:24:35 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970219

	* pack.c (pack_pack): packed by null for A specifier. must be
	  space filled.

	* pack.c (pack_unpack): bug in skipping spaces

	* gc.c (xmalloc): garbage collect for every 4 Meg. allocation.

	* string.c (str_split_method): limit worked wrong way.

	* io.c (io_gets_method): misunderstand 0xff in binary files when
	  $/ == nil.

	* re.c (reg_regsub): re-implement.

	* ext/socket/socket.c (thread_connect): remove O_NONBLOCK, which
	  is not defined on some platform like NeXT.

Mon Feb 17 13:08:30 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970217

	* object.c (mod_eqq): === extended for subclass check (to use case
	  as typecase).

Sat Feb 15 02:07:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* regex.c (re_compile_pattern): wrong match backref at end of pattern.

	* io.c (arg_read): now works beyond end of file.

Thu Feb 13 16:21:24 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* parse.y (expr): return/yield now accept normal argument format.

	* parse.y (yylex): a star in `yield *x' must not be multiplication
	  operator.

Wed Feb 12 15:06:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* time.c (time_plus): bug in simple addition.

	* eval.c (thread_raise): raise exceptions from outside.

	* eval.c (Init_Thread): Thread#alive? -- alias for Thread#status.

Mon Feb 10 00:38:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* ruby.h (Data_Make_Struct): rename macros.

Sun Feb  8 11:48:13 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* io.c (f_syscall): argument offset was wrong.

Fri Feb  7 18:01:17 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970207

	* eval.c: add volatiles to avoid variable crobbering by longjmp().

	* eval.c (f_raise): 1st argument can be the GlobalExit object now.

	* array.c (ary_unshift): no longer accept more than 2 args.

	* eval.c (f_raise): bug if 2nd argument is the exception.

Tue Feb  4 00:37:29 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970204

	* eval.c (eval): check compile errors by nerrs.

	* eval.c (rb_eval): check syntax error by nerrs, not by the return
 	  value, which may be NULL.

	* eval.c (compile): Do not clear errinfo.

Mon Feb  3 10:13:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (obj_extend): move real inclusion to Module#extend_object
	  to allow redfinition.

	* object.c (Init_Object): Kernel class is now Module. Object class
	  became the true root class.

	* object.c (obj_inspect): remove useless buffer.

	* hash.c (any_cmp): disable interrupts and context switching.

	* st.c: remove ALLOW_INTS to disable interrupt during operations.

Fri Jan 31 22:10:08 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* hash.c (hash_rehash): re-register all key-value.

Thu Jan 30 02:14:49 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* io.c (io_reopen): re-implement according to clone() way.

	* io.c (io_clone): copy IO object.

	* struct.c (struct_eql): compare elements by eql?.

	* io.c (io_mode_flags): detect "rb", "wb" etc.

	* io.h (FMODE_BINMODE): added.

	* ext/socket/socket.c (Init_socket): undef BasicSocket.new

	* file.c (Init_File): File.new(path[,mode])

	* io.c (Init_IO): IO.new(fd[,mode])

	* eval.c (rb_method_boundp): forgot to enable priv argument.

	* object.c (Init_Object): remove `=~' from Kernel class.

	* ext/socket/socket.c (open_inet): initialize sockaddr before
	  calling bind(2).

	* sample/ruby-mode.el (ruby-calculate-indent): skip comment lines

Wed Jan 29 18:43:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (Init_Thread): DEFER_INTS during initializing threads.

	* hash.c (Init_Hash): Hash#eql? checks for object identity.

	* eval.c (thread_set_critical): wrong value assigned.

Mon Jan 27 16:10:51 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* io.c (io_print): remove print_on().

	* eval.c (f_missing): proper error message for undefined method
	  without argument

Sat Jan 25 23:32:32 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* string.c (str_sub_s): false alert - sub() does not modify string.

	* array.c (ary_times): negative multiplication detected

	* string.c (str_times): negative multiplication detected

Fri Jan 24 10:51:39 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* time.c (time_arg): month -> 0 == "jan" == "1" == "01", little bit
	  confusing but wanted to conform japanese style.

	* version 1.0-970124

Fri Jan 24 09:52:49 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* util.c (_fixpath): supports SJIS filenames on DJGPP.

Thu Jan 23 16:52:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* README.EXT: update. partially translated into English.

	* ext/extmk.rb.in: inherit $LDFLAGS to the final link.

	* ext/socket/socket.c (Init_socket): add various constants.

Mon Jan 23 11:40:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* eval.c (Init_Thread): allocate main_thread first to avoid crash.

Thu Jan 23 02:09:26 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* gc.c (ObjectSpace): API modified. each_object method will do all
 	  the iteration.

	* eval.c (proc_call): wrong return from nested lambda.

	* ext/GD/GD.c: debugged.

Wed Jan 22 16:12:25 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970122

	* gc.c (gc_mark): forgot to mark match->str.

	* ext/GD/GD.c: GD interface module.

	* eval.c (PUSH_BLOCK): wrong value pushed as the block level.

Mon Jan 20 14:01:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (thread_run): no context switch in the critical section.

Mon Jan 20 09:40:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>

	* utils.c: supports 8+3 filenames

Sat Jan 18 01:23:03 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970118

	* regex.c (PATFETCH): need cast to unsigned char.

	* io.c (io_ctl): bug in case when arg is not a string.

	* lib/tk.rb: forgot that Kernel#type returns the class name now.

	* regex.c (re_search): "abc\n" =~ "^$" should not match.

Fri Jan 17 12:31:37 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970117

	* ruby.c (ruby_options): constant PLATFORM, which is in the {cpu}-{os}
	  form, defined.

	* configure.in: platform infomation embedded in the interpreter.

	* regex.c (re_search): /^$/ did not match to "" by wrong exit condition.

	* lib/thread.rb: re-write Mutex/Queue based on Thread.critical.

	* eval.c (thread_set_critical): remove Thread.exclusive, add
	  Thread.critical = TRUE/FALSE instead.

	* re.c (reg_search): re-compile pattern if needed

	* regex.c (PATFETCH): do translate at compile time

Thu Jan 16 00:49:10 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* gc.c (gc_mark_frame): forgot to mark frame->cbase.

	* regex.c (re_compile_pattern): /a$|b)/ causes error.

	* regex.c (re_compile_pattern): /(^|b)/ causes error.

	* version 1.0-970116

	* re.c (Init_Regexp): set RE_CONTEXTUAL_INVALID_OPS flag.

Tue Jan 14 02:09:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (proc_call): Proc#callをイテレータとして呼んだ時に対応

	* configure.in: nextstep対応？

	* eval.c (rb_eval): a[b]=cで無駄な配列を割り当てない

	* eval.c (f_send): イテレータとして呼ばれたらイテレータとしてメソッ
	  ドを呼ぶ．

	* string.c (str_new4): match共有用の生成関数

	* re.c (reg_search): matchの実体(文字列)をマッチを行った文字列と
	  copy-on-writeで共有

	* string.c (str_hash): toupperをかける条件が違っていた

	* array.c (sort_2): FixnumとStringを特別扱いして高速化

Mon Jan 13 11:03:53 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* eval.c (thread_create): threadが生成されるまで割込みを設定しない

	* eval.c (Init_Thread): 割込みタイミングを100msecに

Sat Jan 11 00:17:05 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* regex.c (re_search): マッチに失敗する場合があった(本当に直ったか？)

	* io.c (io_ioctl,io_fcntl): 第2引数を省略可能に

	* io.c (io_ioctl,io_fcntl): 戻り値がIOだった．整数(システムコール
	  の戻り値)を返すようにした．

	* io.c (io_ctl): 引数が整数の時に対応

	* io.c (io_fcntl): file.cから移動

Fri Jan 10 17:01:47 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* version 1.0-970110

	* ext/socket/socket.c (thread_connect): open(connect(2))で他の
	  threadをブロックしないように

	* eval.c (thread_create): exitでないときにexitだと思い込む

Mon Jan  6 17:42:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* string.c (str_sub_s): 文字列長より長いoffsetの検出

	* regex.c (re_search): 空にマッチするパターン後の$で失敗

Thu Jan  2 16:36:23 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* file.c (file_reopen): Fileのreopen(pathまたはIOで指定)．

	* io.c (io_reopen): IOのreopen(IOで指定) -- change classつき

Wed Jan  1 11:09:01 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* io.c (f_select): timeoutでnilを返す

Fri Dec 27 13:06:44 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* file.c (file_s_open): サブクラスではそのクラスのインスタンスを返
	  すように．

Fri Dec 27 08:58:27 1996  ono@isl.nara.sharp.co.jp

	* numeric.c (flo_to_s): index()を使わない．strstr()に．

Thu Dec 26 01:34:17 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>

	* lib/tk.rb: placeが使えるように

	* pack.c (endian): マクロDYNAMIC_ENDIANを指定すると実行時にendian
	  を判定するように．

	* eval.c (thread_alloc): 初期化忘れのメンバがあった．

Co-authored-by: EGUCHI Matsumoto <eguchi@shizuokanet.or.jp>
Co-authored-by: EGUCHI Osamu <eguchi@shizuokanet.or.jp>
Co-authored-by: KIMURA Koichi <kkimura@pure.cpdc.canon.co.jp>
Co-authored-by: Katsuyuki Okabe <HGC02147@niftyserve.or.jp>
Co-authored-by: MAEDA shugo <shugo@po.aianet.ne.jp>
Co-authored-by: Michio "Karl" Jinbo <karl@marcer.nagaokaut.ac.jp>
Co-authored-by: WATANABE Hirofumi <watanabe@ase.ptg.sony.co.jp>
Co-authored-by: Yasuo OHBA <jammy@shljapan.co.jp>
Co-authored-by: maeda shugo <shugo@po.aianet.ne.jp>
Co-authored-by: ono <ono@isl.nara.sharp.co.jp>

1 files changed, 777 insertions, 0 deletions

diff --git a/lib/matrix.rb b/lib/matrix.rb
new file mode 100644
index 0000000000..394c66f098
--- /dev/null
+++ b/lib/matrix.rb
@@ -0,0 +1,777 @@
+#!/usr/local/bin/ruby
+#
+#   matrix.rb - 
+#   	$Release Version: 1.0$
+#   	$Revision: 1.0 $
+#   	$Date: 97/05/23 11:35:28 $
+#       Original Version from Smalltalk-80 version
+#	   on July 23, 1985 at 8:37:17 am
+#   	by Keiju ISHITSUKA
+#
+# --
+#
+#   Matrix[[1,2,3],
+#	      :
+#	   [3,4,5]]
+#   Matrix[row0,
+#          row1,
+#	    :
+#          rown]
+#
+#   column: ��
+#   row:    ��
+#
+
+require "e2mmap.rb"
+
+module ExceptionForMatrix
+  Exception2MessageMapper.extend_to(binding)
+  
+  def_e2message(TypeError, "wrong argument type %s (expected %s)")
+  def_e2message(ArgumentError, "Wrong # of arguments(%d for %d)")
+  
+  def_exception("ErrDimensionMismatch", "\#{self.type} dimemsion mismatch")
+  def_exception("ErrNotRegular", "Not Regular Matrix")
+  def_exception("ErrOperationNotDefined", "This operation(%s) can\\'t defined")
+end
+
+class Matrix
+  RCS_ID='-$Header: ruby-mode,v 1.2 91/04/20 17:24:57 keiju Locked $-'
+  
+  include ExceptionForMatrix
+  
+  # instance creations
+  private_class_method :new
+  
+  def Matrix.[](*rows)
+    new(:init_rows, rows, FALSE)
+  end
+  
+  def Matrix.rows(rows, copy = TRUE)
+    new(:init_rows, rows, copy)
+  end
+  
+  def Matrix.columns(columns)
+    rows = (0 .. columns[0].size - 1).collect {
+      |i|
+      (0 .. columns.size - 1).collect {
+	|j|
+	columns[j][i]
+      }
+    }
+    Matrix.rows(rows, FALSE)
+  end
+  
+  def Matrix.diagonal(*values)
+    size = values.size
+    rows = (0 .. size  - 1).collect {
+      |j|
+      row = Array.new(size).fill(0, 0, size)
+      row[j] = values[j]
+      row
+    }
+    self
+    rows(rows, FALSE)
+  end
+  
+  def Matrix.scalar(n, value)
+    Matrix.diagonal(*Array.new(n).fill(value, 0, n))
+  end
+
+  def Matrix.identity(n)
+    Matrix.scalar(n, 1)
+  end
+  class << Matrix 
+    alias unit identity
+    alias I identity
+  end
+  
+  def Matrix.zero(n)
+    Matrix.scalar(n, 0)
+  end
+  
+  def Matrix.row_vector(row)
+    case row
+    when Vector
+      Matrix.rows([row.to_a], FALSE)
+    when Array
+      Matrix.rows([row.dup], FALSE)
+    else
+      Matrix.row([[row]], FALSE)
+    end
+  end
+  
+  def Matrix.column_vector(column)
+    case column
+    when Vector
+      Matrix.columns([column.to_a])
+    when Array
+      Matrix.columns([column])
+    else
+      Matrix.columns([[column]])
+    end
+  end
+
+  # initializing
+  def initialize(init_method, *argv)
+    self.send(init_method, *argv)
+  end
+  
+  def init_rows(rows, copy)
+    if copy
+      @rows = rows.collect{|row| row.dup}
+    else
+      @rows = rows
+    end
+    self
+  end
+  private :init_rows
+  
+  #accessing
+  def [](i, j)
+    @rows[i][j]
+  end
+
+  def row_size
+    @rows.size
+  end
+  
+  def column_size
+    @rows[0].size
+  end
+
+  def row(i)
+    if iterator?
+      for e in @rows[i]
+	yield e
+      end
+    else
+      Vector.elements(@rows[i])
+    end
+  end
+
+  def column(j)
+    if iterator?
+      0.upto(row_size - 1) do
+	|i|
+	yield @rows[i][j]
+      end
+    else
+      col = (0 .. row_size - 1).collect {
+	|i|
+	@rows[i][j]
+      }
+      Vector.elements(col, FALSE)
+    end
+  end
+  
+  def collect
+    rows = @rows.collect{|row| row.collect{|e| yield e}}
+    Matrix.rows(rows, FALSE)
+  end
+  alias map collect
+  
+  #
+  # param:  (from_row, row_size, from_col, size_col)
+  #	    (from_row..to_row, from_col..to_col)
+  #
+  def minor(*param)
+    case param.size
+    when 2
+      from_row = param[0].first
+      size_row = param[0].size
+      from_col = param[1].first
+      size_col = param[1].size
+    when 4
+      from_row = param[0]
+      size_row = param[1]
+      from_col = param[2]
+      size_col = param[3]
+    else
+      Matrix.fail ArgumentError, param.inspect
+    end
+    
+    rows = @rows[from_row, size_row].collect{
+      |row|
+      row[from_col, size_col]
+    }
+    Matrix.rows(rows, FALSE)
+  end
+  
+  # TESTING
+  def regular?
+    square? and rank == column_size
+  end
+  
+  def singular?
+    not regular?
+  end
+
+  def square?
+    column_size == row_size
+  end
+  
+  # ARITHMETIC
+  
+  def *(m) #is matrix or vector or number"
+    case(m)
+    when Numeric
+      rows = @rows.collect {
+	|row|
+	row.collect {
+	  |e|
+	  e * m
+	}
+      }
+      return Matrix.rows(rows, FALSE)
+    when Vector
+      m = Matrix.column_vector(m)
+      r = self * m
+      return r.column(0)
+    when Matrix
+      Matrix.fail ErrDimensionMismatch if column_size != m.row_size
+    
+      rows = (0 .. row_size - 1).collect {
+	|i|
+	(0 .. m.column_size - 1).collect {
+	  |j|
+	  vij = 0
+	  0.upto(column_size - 1) do
+	    |k|
+	    vij += self[i, k] * m[k, j]
+	  end
+	  vij
+	}
+      }
+      return Matrix.rows(rows, FALSE)
+    else
+      x, y = m.coerce(self)
+      return x * y
+    end
+  end
+  
+  def +(m)
+    case m
+    when Numeric
+      Matrix.fail ErrOperationNotDefined, "+"
+    when Vector
+      m = Matrix.column_vector(m)
+    when Matrix
+    else
+      x, y = m.coerce(self)
+      return x + y
+    end
+    
+    Matrix.fail ErrDimensionMismatch unless row_size == m.row_size and column_size == m.column_size
+    
+    rows = (0 .. row_size - 1).collect {
+      |i|
+      (0 .. column_size - 1).collect {
+	|j|
+	self[i, j] + m[i, j]
+      }
+    }
+    Matrix.rows(rows, FALSE)
+  end
+
+  def -(m)
+    case m
+    when Numeric
+      Matrix.fail ErrOperationNotDefined, "-"
+    when Vector
+      m = Matrix.column_vector(m)
+    when Matrix
+    else
+      x, y = m.coerce(self)
+      return x - y
+    end
+    
+    Matrix.fail ErrDimensionMismatch unless row_size == m.row_size and column_size == m.column_size
+    
+    rows = (0 .. row_size - 1).collect {
+      |i|
+      (0 .. column_size - 1).collect {
+	|j|
+	self[i, j] - m[i, j]
+      }
+    }
+    Matrix.rows(rows, FALSE)
+  end
+
+  def inverse
+    Matrix.fail ErrDimensionMismatch unless square?
+    Matrix.I(row_size).inverse_from(self)
+  end
+  alias inv inverse
+  
+  def inverse_from(src)
+    size = row_size - 1
+    a = src.to_a
+    
+    for k in 0..size
+      if (akk = a[k][k]) == 0
+	i = k
+	begin
+	  fail ErrNotRegular if (i += 1) > size
+	end while a[i][k] == 0
+	a[i], a[k] = a[k], a[i]
+	@rows[i], @rows[k] = @rows[k], @rows[i]
+	akk = a[k][k]
+      end
+      
+      for i in 0 .. size
+	next if i == k
+	q = a[i][k] / akk
+	a[i][k] = 0
+	
+	(k + 1).upto(size) do	
+	  |j|
+	  a[i][j] -= a[k][j] * q
+	end
+	0.upto(size) do
+	  |j|
+	  @rows[i][j] -= @rows[k][j] * q
+	end
+      end
+      
+      (k + 1).upto(size) do
+	|j|
+	a[k][j] /= akk
+      end
+      0.upto(size) do
+	|j|
+	@rows[k][j] /= akk
+      end
+    end
+    self
+  end
+  #alias reciprocal inverse
+  
+  def ** (other)
+    if other.kind_of?(Integer)
+      x = self
+      if other <= 0
+	x = self.inverse
+	return Matrix.identity(self.column_size) if other == 0
+	other = -other
+      end
+      z = x
+      n = other  - 1
+      while n != 0
+	while (div, mod = n.divmod(2)
+	       mod == 0)
+	  x = x * x
+	  n = div
+	end
+	z *= x
+	n -= 1
+      end
+      z
+    elsif other.kind_of?(Float) || defined?(Rational) && other.kind_of?(Rational)
+      fail ErrOperationNotDefined, "**"
+    else
+      fail ErrOperationNotDefined, "**"
+    end
+  end
+  
+  # Matrix functions
+  
+  def determinant
+    return 0 unless square?
+    
+    size = row_size - 1
+    a = to_a
+    
+    det = 1
+    k = 0
+    begin 
+      if (akk = a[k][k]) == 0
+	i = k
+	begin
+	  return 0 if (i += 1) > size
+	end while a[i][k] == 0
+	a[i], a[k] = a[k], a[i]
+	akk = a[k][k]
+      end
+      (k + 1).upto(size) do
+	|i|
+	q = a[i][k] / akk
+	(k + 1).upto(size) do
+	  |j|
+	  a[i][j] -= a[k][j] * q
+	end
+      end
+      det *= akk
+    end while (k += 1) <= size
+    det
+  end
+  alias det determinant
+	
+  def rank
+    if column_size > row_size
+      a = transpose.to_a
+    else
+      a = to_a
+    end
+    rank = 0
+    k = 0
+    begin
+      if (akk = a[k][k]) == 0
+	i = -1
+	nothing = FALSE
+	begin
+	  if (i += 1) > column_size - 1
+	    nothing = TRUE
+	    break
+	  end
+	end while a[i][k] == 0
+	next if nothing
+	a[i], a[k] = a[k], a[i]
+	akk = a[k][k]
+      end
+      (k + 1).upto(row_size - 1) do
+	|i|
+	q = a[i][k] / akk
+	(k + 1).upto(column_size - 1) do
+	  |j|
+	  a[i][j] -= a[k][j] * q
+	end
+      end
+      rank += 1
+    end while (k += 1) <= column_size - 1
+    return rank
+  end
+
+  def trace
+    tr = 0
+    0.upto(column_size - 1) do
+      |i|
+      tr += @rows[i][i]
+    end
+    tr
+  end
+  alias tr trace
+  
+  def transpose
+    Matrix.columns(@rows)
+  end
+  alias t transpose
+  
+  # CONVERTING
+  
+  def coerce(other)
+    case other
+    when Numeric
+      return Scalar.new(other), self
+    end
+  end
+
+  def row_vectors
+    rows = (0 .. column_size - 1).collect {
+      |i|
+      row(i)
+    }
+    rows
+  end
+  
+  def column_vectors
+    columns = (0 .. row_size - 1).collect {
+      |i|
+      column(i)
+    }
+    columns
+  end
+  
+  def to_a
+    @rows.collect{|row| row.collect{|e| e}}
+  end
+  
+  def to_f
+    collect{|e| e.to_f}
+  end
+  
+  def to_i
+    collect{|e| e.to_i}
+  end
+  
+  def to_r
+    collect{|e| e.to_r}
+  end
+  
+  # PRINTING
+  def to_s
+    "Matrix[" + @rows.collect{
+      |row|
+      "[" + row.collect{|e| e.to_s}.join(", ") + "]"
+    }.join(", ")+"]"
+  end
+  
+  def inspect
+    "Matrix"+@rows.inspect
+  end
+  
+  # Private CLASS
+  
+  class Scalar < Numeric
+    include ExceptionForMatrix
+    
+    def initialize(value)
+      @value = value
+    end
+    
+    # ARITHMETIC
+    def +(other)
+      case other
+      when Numeric
+	Scalar.new(@value + other)
+      when Vector, Matrix
+	Scalar.fail WrongArgType, other.type, "Numeric or Scalar"
+      when Scalar
+	Scalar.new(@value + other.value)
+      else
+	x, y = other.coerce(self)
+	x + y
+      end
+    end
+    
+    def -(other)
+      case other
+      when Numeric
+	Scalar.new(@value - other)
+      when Vector, Matrix
+	Scalar.fail WrongArgType, other.type, "Numeric or Scalar"
+      when Scalar
+	Scalar.new(@value - other.value)
+      else
+	x, y = other.coerce(self)
+	x - y
+      end
+    end
+    
+    def *(other)
+      case other
+      when Numeric
+	Scalar.new(@value * other)
+      when Vector, Matrix
+	other.collect{|e| @value * e}
+      else
+	x, y = other.coerce(self)
+	x * y
+      end
+    end
+    
+    def / (other)
+      case other
+      when Numeric
+	Scalar.new(@value / other)
+      when Vector
+	Scalar.fail WrongArgType, other.type, "Numeric or Scalar or Matrix"
+      when Matrix
+	self * _M.inverse
+      else
+	x, y = other.coerce(self)
+	x / y
+      end
+    end
+    
+    def ** (other)
+      case other
+      when Numeric
+	Scalar.new(@value ** other)
+      when Vector
+	Scalar.fail WrongArgType, other.type, "Numeric or Scalar or Matrix"
+      when Matrix
+	other.powered_by(self)
+      else
+	x, y = other.coerce(self)
+	x ** y
+      end
+    end
+  end
+end
+
+#----------------------------------------------------------------------
+#
+#    - 
+#
+#----------------------------------------------------------------------
+class Vector
+  include ExceptionForMatrix
+
+  
+  #INSTANCE CREATION
+  
+  private_class_method :new
+  def Vector.[](*array)
+    new(:init_elements, array, copy = FALSE)
+  end
+  
+  def Vector.elements(array, copy = TRUE)
+    new(:init_elements, array, copy)
+  end
+  
+  def initialize(method, array, copy)
+    self.send(method, array, copy)
+  end
+  
+  def init_elements(array, copy)
+    if copy
+      @elements = array.dup
+    else
+      @elements = array
+    end
+  end
+  
+  # ACCSESSING
+	 
+  def [](i)
+    @elements[i]
+  end
+  
+  def size
+    @elements.size
+  end
+  
+  # ENUMRATIONS
+  def each2(v)
+    Vector.fail ErrDimensionMismatch if size != v.size
+    0.upto(size - 1) do
+      |i|
+      yield @elements[i], v[i]
+    end
+  end
+  
+  def collect2(v)
+    Vector.fail ErrDimensionMismatch if size != v.size
+    (0 .. size - 1).collect do
+      |i|
+      yield @elements[i], v[i]
+    end
+  end
+
+  # ARITHMETIC
+  
+  def *(x) "is matrix or number"
+    case x
+    when Numeric
+      els = @elements.collect{|e| e * x}
+      Vector.elements(els, FALSE)
+    when Matrix
+      self.covector * x
+    else
+      s, x = X.corece(self)
+      s * x
+    end
+  end
+
+  def +(v)
+    case v
+    when Vector
+      Vector.fail ErrDimensionMismatch if size != v.size
+      els = collect2(v) {
+	|v1, v2|
+	v1 + v2
+      }
+      Vector.elements(els, FALSE)
+    when Matrix
+      Matrix.column_vector(self) + v
+    else
+      s, x = v.corece(self)
+      s + x
+    end
+  end
+
+  def -(v)
+    case v
+    when Vector
+      Vector.fail ErrDimensionMismatch if size != v.size
+      els = collect2(v) {
+	|v1, v2|
+	v1 - v2
+      }
+      Vector.elements(els, FALSE)
+    when Matrix
+      Matrix.column_vector(self) - v
+    else
+      s, x = v.corece(self)
+      s - x
+    end
+  end
+  
+  # VECTOR FUNCTIONS
+  
+  def inner_product(v)
+    Vector.fail ErrDimensionMismatch if size != v.size
+    
+    p = 0
+    each2(v) {
+      |v1, v2|
+      p += v1 * v2
+    }
+    p
+  end
+  
+  def collect
+    els = @elements.collect {
+      |v|
+      yield v
+    }
+    Vector.elements(els, FALSE)
+  end
+  alias map collect
+  
+  def map2(v)
+    els = collect2(v) {
+      |v1, v2|
+      yield v1, v2
+    }
+    Vector.elements(els, FALSE)
+  end
+  
+  def r
+    v = 0
+    for e in @elements
+      v += e*e
+    end
+    return v.sqrt
+  end
+  
+  # CONVERTING
+  def covector
+    Matrix.row_vector(self)
+  end
+  
+  def to_a
+    @elements.dup
+  end
+  
+  def to_f
+    collect{|e| e.to_f}
+  end
+  
+  def to_i
+    collect{|e| e.to_i}
+  end
+  
+  def to_r
+    collect{|e| e.to_r}
+  end
+  
+  def coerce(other)
+    case other
+    when Numeric
+      return Scalar.new(other), self
+    end
+  end
+  
+  # PRINTING
+  
+  def to_s
+    "Vector[" + @elements.join(", ") + "]"
+  end
+  
+  def inspect
+    str = "Vector"+@elements.inspect
+  end
+end
+