--- gforth/stuff.fs 2003/01/25 20:11:30 1.28 +++ gforth/stuff.fs 2004/12/31 13:23:58 1.41 @@ -1,6 +1,6 @@ \ miscelleneous words -\ Copyright (C) 1996,1997,1998,2000 Free Software Foundation, Inc. +\ Copyright (C) 1996,1997,1998,2000,2003,2004 Free Software Foundation, Inc. \ This file is part of Gforth. @@ -51,8 +51,12 @@ AUser CSP \G @code{system} command. : system ( c-addr u -- ) \ gforth -\G Pass the string specified by @var{c-addr u} to the host operating system -\G for execution in a sub-shell. +\G Pass the string specified by @var{c-addr u} to the host operating +\G system for execution in a sub-shell. The value of the environment +\G variable @code{GFORTHSYSTEMPREFIX} (or its default value) is +\G prepended to the string (mainly to support using @code{command.com} +\G as shell in Windows instead of whatever shell Cygwin uses by +\G default; @pxref{Environment variables}). (system) throw TO $? ; : sh ( "..." -- ) \ gforth @@ -98,19 +102,20 @@ AUser CSP ur compile-fliterals uw compile-literals target compile, POSTPONE exit reveal ; -: const-does> ( run-time: w*uw r*ur uw ur "name" -- ) - \G Defines @var{name} and returns.@sp 0 +: const-does> ( run-time: w*uw r*ur uw ur "name" -- ) \ gforth + \G Defines @var{name} and returns. + \G \G @var{name} execution: pushes @var{w*uw r*ur}, then performs the \G code following the @code{const-does>}. here >r 0 POSTPONE literal POSTPONE (const-does>) POSTPONE ; noname : POSTPONE rdrop - lastxt r> cell+ ! \ patch the literal + latestxt r> cell+ ! \ patch the literal ; immediate \ !! rewrite slurp-file using slurp-fid -: slurp-file ( c-addr1 u1 -- c-addr2 u2 ) +: slurp-file ( c-addr1 u1 -- c-addr2 u2 ) \ gforth \G @var{c-addr1 u1} is the filename, @var{c-addr2 u2} is the file's contents r/o bin open-file throw >r r@ file-size throw abort" file too large" @@ -118,7 +123,7 @@ AUser CSP 2dup r@ read-file throw over <> abort" could not read whole file" r> close-file throw ; -: slurp-fid { fid -- addr u } +: slurp-fid { fid -- addr u } \ gforth \G @var{addr u} is the content of the file @var{fid} 0 0 begin ( awhole uwhole ) dup 1024 + dup >r extend-mem ( anew awhole uwhole R: unew ) @@ -210,7 +215,7 @@ AUser CSP endif 1 max ur min ; -: f>buf-rdp ( rf c-addr +nr nd np -- ) \ gforth +: f>buf-rdp ( rf c-addr +nr +nd +np -- ) \ gforth \G Convert @i{rf} into a string at @i{c-addr nr}. The conversion \G rules and the meanings of @i{nr nd np} are the same as for \G @code{f.rdp}. @@ -236,19 +241,21 @@ AUser CSP : f.rdp ( rf +nr +nd +np -- ) \ gforth \G Print float @i{rf} formatted. The total width of the output is -\G @i{nr}, the number of digits after the decimal point is @i{+nd}, -\G the minimum number of significant digits for fixed-point notation -\G is @i{np}. @code{Set-precision} has no effect on @code{f.rdp}. -\G Fixed-point notation is used if the number of siginicant digits -\G would be larger than @i{np} and if the number of digits before the -\G decimal point would fit. If fixed-point notation is not used, -\G exponential notation is used, and if that does not fit, asterisks -\G are printed. We recommend using @i{nr}>=7 to avoid the risk of -\G numbers not fitting at all. We recommend @i{nr}>=@i{np}+5 to avoid -\G cases where @code{f.rdp} switches to exponential notation because -\G fixed-point notation would have too few significant digits, yet -\G exponential notation offers fewer significant digits. We recomment -\G @i{nr}>=@i{nd}+2, if you want to have fixed-point notation for some +\G @i{nr}. For fixed-point notation, the number of digits after the +\G decimal point is @i{+nd} and the minimum number of significant +\G digits is @i{np}. @code{Set-precision} has no effect on +\G @code{f.rdp}. Fixed-point notation is used if the number of +\G siginicant digits would be at least @i{np} and if the number of +\G digits before the decimal point would fit. If fixed-point notation +\G is not used, exponential notation is used, and if that does not +\G fit, asterisks are printed. We recommend using @i{nr}>=7 to avoid +\G the risk of numbers not fitting at all. We recommend +\G @i{nr}>=@i{np}+5 to avoid cases where @code{f.rdp} switches to +\G exponential notation because fixed-point notation would have too +\G few significant digits, yet exponential notation offers fewer +\G significant digits. We recommend @i{nr}>=@i{nd}+2, if you want to +\G have fixed-point notation for some numbers. We recommend +\G @i{np}>@i{nr}, if you want to have exponential notation for all \G numbers. f>str-rdp type ; @@ -273,3 +280,37 @@ AUser CSP 10e f* loop ; [then] + +: f.s ( -- ) \ gforth f-dot-s + \G Display the number of items on the floating-point stack, + \G followed by a list of the items; TOS is the right-most item. + ." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 + ?DO dup i - 1- floats fp@ + f@ 16 5 11 f.rdp space LOOP drop ; + +\ defer stuff + +[ifundef] defer@ : defer@ >body @ ; [then] + +:noname ' defer@ ; +:noname postpone ['] postpone defer@ ; +interpret/compile: action-of ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth +\G @i{Xt} is the XT that is currently assigned to @i{name}. + +' action-of +comp' action-of drop +interpret/compile: what's ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth-obsolete +\G Old name of @code{action-of} + + +: typewhite ( addr n -- ) \ gforth +\G Like type, but white space is printed instead of the characters. + \ bounds u+do + 0 max bounds ?do + i c@ #tab = if \ check for tab + #tab + else + bl + then + emit + loop ; +