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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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15
Task/Binary-digits/ACL2/binary-digits.acl2 Normal file
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(include-book "arithmetic-3/top" :dir :system)
(defun bin-string-r (x)
(if (zp x)
""
(string-append
(bin-string-r (floor x 2))
(if (= 1 (mod x 2))
"1"
"0"))))
(defun bin-string (x)
(if (zp x)
"0"
(bin-string-r x)))