\ Copyright 2022 Bradley D. Nelson
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\ Licensed under the Apache License, Version 2.0 (the "License");
\ you may not use this file except in compliance with the License.
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( Define more words that are usually in extra_opcodes.h )

( Fill, Move )
: cmove ( a a n -- ) for aft >r dup c@ r@ c! 1+ r> 1+ then next 2drop ;
: cmove> ( a a n -- ) for aft 2dup swap r@ + c@ swap r@ + c! then next 2drop ;
: fill ( a n ch -- ) swap for swap aft 2dup c! 1 + then next 2drop ;
: erase ( a n -- ) 0 fill ;   : blank ( a n -- ) bl fill ;

( Compound words requiring conditionals )
: min 2dup < if drop else nip then ;
: max 2dup < if nip else drop then ;
: abs ( n -- +n ) dup 0< if negate then ;