Diff for /gforth/Attic/gforth.ds between versions 1.31 and 1.32

version 1.31, 1996/02/09 17:34:09 version 1.32, 1996/02/19 18:57:26
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 @ifinfo  @ifinfo
 This file documents Gforth 0.2  This file documents Gforth 0.2
   
 Copyright @copyright{} 1995 Free Software Foundation, Inc.  Copyright @copyright{} 1995,1996 Free Software Foundation, Inc.
   
      Permission is granted to make and distribute verbatim copies of       Permission is granted to make and distribute verbatim copies of
      this manual provided the copyright notice and this permission notice       this manual provided the copyright notice and this permission notice
Line 51  Copyright @copyright{} 1995 Free Softwar Line 51  Copyright @copyright{} 1995 Free Softwar
 @comment  The following two commands start the copyright page.  @comment  The following two commands start the copyright page.
 @page  @page
 @vskip 0pt plus 1filll  @vskip 0pt plus 1filll
 Copyright @copyright{} 1995 Free Software Foundation, Inc.  Copyright @copyright{} 1995,1996 Free Software Foundation, Inc.
   
 @comment !! Published by ... or You can get a copy of this manual ...  @comment !! Published by ... or You can get a copy of this manual ...
   
Line 3299  GNU C Manual}). Its labels as values fea Line 3299  GNU C Manual}). Its labels as values fea
 Labels as Values, gcc.info, GNU C Manual}) makes direct and indirect  Labels as Values, gcc.info, GNU C Manual}) makes direct and indirect
 threading possible, its @code{long long} type (@pxref{Long Long, ,  threading possible, its @code{long long} type (@pxref{Long Long, ,
 Double-Word Integers, gcc.info, GNU C Manual}) corresponds to Forths  Double-Word Integers, gcc.info, GNU C Manual}) corresponds to Forths
 double numbers. GNU C is available for free on all important (and many  double numbers@footnote{Unfortunately, long longs are not implemented
 unimportant) UNIX machines, VMS, 80386s running MS-DOS, the Amiga, and  properly on all machines (e.g., on alpha-osf1, long longs are only 64
 the Atari ST, so a Forth written in GNU C can run on all these  bits, the same size as longs (and pointers), but they should be twice as
 machines.  long according to @ref{Long Long, , Double-Word Integers, gcc.info, GNU
   C Manual}). So, we had to implement doubles in C after all. Still, on
   most machines we can use long longs and achieve better performance than
   with the emulation package.}. GNU C is available for free on all
   important (and many unimportant) UNIX machines, VMS, 80386s running
   MS-DOS, the Amiga, and the Atari ST, so a Forth written in GNU C can run
   on all these machines.
   
 Writing in a portable language has the reputation of producing code that  Writing in a portable language has the reputation of producing code that
 is slower than assembly. For our Forth engine we repeatedly looked at  is slower than assembly. For our Forth engine we repeatedly looked at
Line 3657  Gforth (direct threaded, compiled with @ Line 3663  Gforth (direct threaded, compiled with @
 1994) and Eforth (with and without peephole (aka pinhole) optimization  1994) and Eforth (with and without peephole (aka pinhole) optimization
 of the threaded code); all these systems were written in assembly  of the threaded code); all these systems were written in assembly
 language. We also compared Gforth with three systems written in C:  language. We also compared Gforth with three systems written in C:
 PFE-0.9.11 (compiled with @code{gcc-2.6.3} with the default  PFE-0.9.14 (compiled with @code{gcc-2.6.3} with the default
 configuration for Linux: @code{-O2 -fomit-frame-pointer -DUSE_REGS}),  configuration for Linux: @code{-O2 -fomit-frame-pointer -DUSE_REGS
 ThisForth Beta (compiled with gcc-2.6.3 -O3 -fomit-frame-pointer;  -DUNROLL_NEXT}), ThisForth Beta (compiled with gcc-2.6.3 -O3
 ThisForth employs peephole optimization of the threaded code) and TILE  -fomit-frame-pointer; ThisForth employs peephole optimization of the
 (compiled with @code{make opt}). We benchmarked Gforth, PFE, ThisForth  threaded code) and TILE (compiled with @code{make opt}). We benchmarked
 and TILE on a 486DX2/66 under Linux. Kenneth O'Heskin kindly provided  Gforth, PFE, ThisForth and TILE on a 486DX2/66 under Linux. Kenneth
 the results for Win32Forth and NT Forth on a 486DX2/66 with similar  O'Heskin kindly provided the results for Win32Forth and NT Forth on a
 memory performance under Windows NT. Marcel Hendrix ported Eforth to  486DX2/66 with similar memory performance under Windows NT. Marcel
 Linux, then extended it to run the benchmarks, added the peephole  Hendrix ported Eforth to Linux, then extended it to run the benchmarks,
 optimizer, ran the benchmarks and reported the results.  added the peephole optimizer, ran the benchmarks and reported the
   results.
     
 We used four small benchmarks: the ubiquitous Sieve; bubble-sorting and  We used four small benchmarks: the ubiquitous Sieve; bubble-sorting and
 matrix multiplication come from the Stanford integer benchmarks and have  matrix multiplication come from the Stanford integer benchmarks and have
Line 3680  factor that Gforth achieved over the oth Line 3687  factor that Gforth achieved over the oth
 @example  @example
 relative      Win32-    NT       eforth       This-  relative      Win32-    NT       eforth       This-
   time  Gforth Forth Forth eforth  +opt   PFE Forth  TILE    time  Gforth Forth Forth eforth  +opt   PFE Forth  TILE
 sieve     1.00  1.39  1.14   1.39  0.85  1.78  3.18  8.58  sieve     1.00  1.39  1.14   1.39  0.85  1.58  3.18  8.58
 bubble    1.00  1.31  1.41   1.48  0.88  1.67        3.88  bubble    1.00  1.31  1.41   1.48  0.88  1.50        3.88
 matmul    1.00  1.47  1.35   1.46  1.16  2.36        4.09  matmul    1.00  1.47  1.35   1.46  1.16  1.58        4.09
 fib       1.00  1.52  1.34   1.22  1.13  1.93  2.99  4.30  fib       1.00  1.52  1.34   1.22  1.13  1.74  2.99  4.30
 @end example  @end example
   
 You may find the good performance of Gforth compared with the systems  You may find the good performance of Gforth compared with the systems
Line 3730  numbers for Gforth on various machines i Line 3737  numbers for Gforth on various machines i
 Known bugs are described in the file BUGS in the Gforth distribution.  Known bugs are described in the file BUGS in the Gforth distribution.
   
 If you find a bug, please send a bug report to  If you find a bug, please send a bug report to
 @code{gforth-bugs@@mips.complang.tuwien.ac.at}. A bug report should  @code{bug-gforth@@gnu.ai.mit.edu}. A bug report should
 describe the Gforth version used (it is announced at the start of an  describe the Gforth version used (it is announced at the start of an
 interactive Gforth session), the machine and operating system (on Unix  interactive Gforth session), the machine and operating system (on Unix
 systems you can use @code{uname -a} to produce this information), the  systems you can use @code{uname -a} to produce this information), the

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