| \ miscelleneous words |
\ miscelleneous words |
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| \ Copyright (C) 1996 Free Software Foundation, Inc. |
\ Copyright (C) 1996,1997,1998 Free Software Foundation, Inc. |
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| \ This file is part of Gforth. |
\ This file is part of Gforth. |
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| \ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
| \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| ' require alias needs ( ... "name" -- ... ) \ gforth |
' require alias needs ( ... "name" -- ... ) \ gforth |
| \G an alias for @code{require}; exists on other systems (e.g., Win32Forth). |
\G An alias for @code{require}; exists on other systems (e.g., Win32Forth). |
| \ needs is an F-PC name. we will probably switch to 'needs' in the future |
\ needs is an F-PC name. we will probably switch to 'needs' in the future |
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| \ a little more compiler security |
\ a little more compiler security |
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| \ DMIN and DMAX |
\ DMIN and DMAX |
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| : dmin ( d1 d2 -- d ) \ double |
: dmin ( d1 d2 -- d ) \ double d-min |
| 2over 2over d> IF 2swap THEN 2drop ; |
2over 2over d> IF 2swap THEN 2drop ; |
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| : dmax ( d1 d2 -- d ) \ double |
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: dmax ( d1 d2 -- d ) \ double d-max |
| 2over 2over d< IF 2swap THEN 2drop ; |
2over 2over d< IF 2swap THEN 2drop ; |
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| \ shell commands |
\ shell commands |
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| 0 Value $? |
0 Value $? ( -- n ) \ gforth dollar-question |
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\G @code{Value} -- the exit status returned by the most recently executed |
| : system ( addr u -- ) \ gforth |
\G @code{system} command. |
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: system ( c-addr u -- ) \ gforth |
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\G Pass the string specified by @var{c-addr u} to the host operating system |
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\G for execution in a sub-shell. |
| (system) throw TO $? ; |
(system) throw TO $? ; |
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| : sh ( "..." -- ) \ gforth |
: sh ( "..." -- ) \ gforth |
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\G Parse a string and use @code{system} to pass it to the host |
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\G operating system for execution in a sub-shell. |
| '# parse cr system ; |
'# parse cr system ; |
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\ stuff |
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: ]L ( compilation: n -- ; run-time: -- n ) \ gforth |
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\G equivalent to @code{] literal} |
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] postpone literal ; |
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: in-dictionary? ( x -- f ) |
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forthstart dictionary-end within ; |
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: in-return-stack? ( addr -- f ) |
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rp0 @ swap - [ forthstart 6 cells + ]L @ u< ; |
