version 1.54, 2003/01/31 22:45:11
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version 1.61, 2007/12/31 17:34:58
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\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
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\ Copyright (C) 1995,1998,2000 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1998,2000,2003,2005,2007 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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Line 36 decimal
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Line 36 decimal
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\ !! 2value |
\ !! 2value |
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[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 |
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[then] |
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' drop alias d>s ( d -- n ) \ double d_to_s |
' drop alias d>s ( d -- n ) \ double d_to_s |
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Line 48 decimal
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Line 50 decimal
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\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] |
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-rot r> IF IF 1. d+ THEN dnegate ELSE drop THEN |
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[else] |
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nip swap r> IF dnegate THEN |
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[then] ; |
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\ CASE OF ENDOF ENDCASE 17may93jaw |
\ CASE OF ENDOF ENDCASE 17may93jaw |
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Line 92 decimal
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Line 98 decimal
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\ CONVERT 17may93jaw |
\ CONVERT 17may93jaw |
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: 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 ; |
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\ ERASE 17may93jaw |
\ ERASE 17may93jaw |
Line 182 decimal
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Line 188 decimal
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\ EXPECT SPAN 17may93jaw |
\ EXPECT SPAN 17may93jaw |
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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. |
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: 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 |