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The Atari Compendium
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The Atari Compendium (Toad Computers) (1994).iso
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DOS Batch File
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1990-03-25
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307 b
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5 lines
# Fibonacci numbers: try "fib 10" after loading this batch file
alias fib 'unset s ; fib2 \$1 ; rem \$c'
alias fib1 'if "\$1" > "1" {eval \$1 1 - => a ; fib2 \$a ; car s => s ; set s \$c \$s;}'
alias fib2 'if "\$1" <= "1" {set c 1;} else {fib1 \$1 ; car -1o s => a ; car -2o s => b ; eval a b + => c;}'