Diff for /gforth/extend.fs between versions 1.50 and 1.60

version 1.50, 2002/12/27 12:32:52 version 1.60, 2007/07/06 12:54:56
Line 1 Line 1
 \ EXTEND.FS    CORE-EXT Word not fully tested!         12may93jaw  \ EXTEND.FS    CORE-EXT Word not fully tested!         12may93jaw
   
 \ Copyright (C) 1995,1998,2000 Free Software Foundation, Inc.  \ Copyright (C) 1995,1998,2000,2003,2005 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 36  decimal Line 36  decimal
   
 \ !! 2value  \ !! 2value
   
   [ifundef] 2literal
 : 2Literal ( compilation w1 w2 -- ; run-time  -- w1 w2 ) \ double two-literal  : 2Literal ( compilation w1 w2 -- ; run-time  -- w1 w2 ) \ double two-literal
     \G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are      \G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are
     \G placed on the stack. Interpretation semantics are undefined.      \G placed on the stack. Interpretation semantics are undefined.
     swap postpone Literal  postpone Literal ; immediate restrict      swap postpone Literal  postpone Literal ; immediate restrict
   [then]
   
 ' drop alias d>s ( d -- n ) \ double            d_to_s  ' drop alias d>s ( d -- n ) \ double            d_to_s
   
Line 48  decimal Line 50  decimal
     \G In ANS Forth u3 can only be a positive signed number.      \G In ANS Forth u3 can only be a positive signed number.
     >r s>d >r abs -rot      >r s>d >r abs -rot
     s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um*      s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um*
     swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod nip swap      swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod
     r> IF dnegate THEN ;      [ s" floored" environment? 0= throw ] [if]
           -rot r> IF IF 1. d+ THEN dnegate ELSE drop THEN
       [else]
           nip swap r> IF dnegate THEN
       [then] ;
   
 \ CASE OF ENDOF ENDCASE                                 17may93jaw  \ CASE OF ENDOF ENDCASE                                 17may93jaw
   
Line 92  decimal Line 98  decimal
   
 \ CONVERT                                               17may93jaw  \ CONVERT                                               17may93jaw
   
 : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext  : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext-obsolescent
     \G OBSOLESCENT: superseded by @code{>number}.      \G Obsolescent: superseded by @code{>number}.
     char+ true >number drop ;      char+ true >number drop ;
   
 \ ERASE                                                 17may93jaw  \ ERASE                                                 17may93jaw
Line 118  decimal Line 124  decimal
     begin      begin
         dup r@ >=          dup r@ >=
     while      while
         over 2r@ swap -text 0= if          2dup 2r@ string-prefix? if
             2swap 2drop 2r> 2drop true exit              2swap 2drop 2r> 2drop true exit
         endif          endif
         1 /string          1 /string
Line 182  decimal Line 188  decimal
   
 \ EXPECT SPAN                                           17may93jaw  \ EXPECT SPAN                                           17may93jaw
   
 variable span ( -- c-addr ) \ core-ext  variable span ( -- c-addr ) \ core-ext-obsolescent
 \G @code{Variable} -- @i{c-addr} is the address of a cell that stores the  \G @code{Variable} -- @i{c-addr} is the address of a cell that stores the
 \G length of the last string received by @code{expect}. OBSOLESCENT.  \G length of the last string received by @code{expect}. OBSOLESCENT.
   
 : expect ( c-addr +n -- ) \ core-ext  : expect ( c-addr +n -- ) \ core-ext-obsolescent
     \G Receive a string of at most @i{+n} characters, and store it      \G Receive a string of at most @i{+n} characters, and store it
     \G in memory starting at @i{c-addr}. The string is      \G in memory starting at @i{c-addr}. The string is
     \G displayed. Input terminates when the <return> key is pressed or      \G displayed. Input terminates when the <return> key is pressed or
Line 266  variable span ( -- c-addr ) \ core-ext Line 272  variable span ( -- c-addr ) \ core-ext
     drop      drop
     \ restore udp and dp      \ restore udp and dp
 [IFDEF] forget-dyncode  [IFDEF] forget-dyncode
     dup cell+ @ forget-dyncode 0= abort" gforth bug"      dup cell+ @ forget-dyncode drop
 [THEN]  [THEN]
     @ udp !  dp !      @ udp !  dp !
     \ clean up vocabulary stack      \ clean up vocabulary stack

Removed from v.1.50  
changed lines
  Added in v.1.60


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