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< Library Lisp:hexrgb.el converts between hex and decimal RGB values (and also between RGB and HSV color components).
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> Library Lisp:hexrgb.el converts between hex and decimal RGB values (and also between RGB and HSV color components). -- DrewAdams
The following function returns a list of bits (number 1 and 0) from a program, and prints a message if used interactively.
(defun bits (num)
(interactive "nNumber: ")
(unless (integerp num)
(error "%S must be an integer" num))
(let (result (n num))
(while (> n 0)
(setq result (cons (mod n 2) result)
n (/ n 2)))
(if (interactive-p)
(message "%d is %s" num (mapconcat 'number-to-string result ""))
result)))M-x bits RET 5 RET prints “5 is 101”, while (bits 5) evaluates to (1 0 1).
SimpleCalculator provides a different, interactive-only solution for converting numbers: The keys B,H,O switch between binary, octal and hex-mode. M-x calculator RET 5 B prints “Calc=B⇒ 101”
Library Lisp:hexrgb.el converts between hex and decimal RGB values (and also between RGB and HSV color components). – DrewAdams