Emacs: Hexadecimal to Decimal 🚀
Here's a emacs command that shows the hexadecimal under cursor as decimal.
put this in your Emacs Init File:
(defun xah-hexadecimal-to-decimal () "Prints the decimal value of a hexadecimal string under cursor. Samples of valid input: ffff → 65535 0xffff → 65535 #xffff → 65535 FFFF → 65535 0xFFFF → 65535 #xFFFF → 65535 more test cases 64*0xc8+#x12c 190*0x1f4+#x258 100 200 300 400 500 600 Command originally written on ~2011-10-03. URL `http://xahlee.info/emacs/emacs/emacs_show_hexadecimal.html' Version: 2020-02-17 2024-01-09 2024-02-27" (interactive) (let (xinput xtemp xp1 xp2) (if (region-active-p) (setq xp1 (region-beginning) xp2 (region-end)) (progn (save-excursion (skip-chars-backward "[:xdigit:]#x") (setq xp1 (point)) (skip-chars-forward "[:xdigit:]#x") (setq xp2 (point))))) (setq xinput (buffer-substring-no-properties xp1 xp2)) (let ((case-fold-search nil)) (setq xtemp (replace-regexp-in-string "\\`0x" "" xinput)) ; C, Perl (setq xtemp (replace-regexp-in-string "\\`#x" "" xtemp)) ; elisp (setq xtemp (replace-regexp-in-string "\\`#" "" xtemp)) ; CSS ) (message "Radix 16: %s Radix 10: %d" xtemp (string-to-number xtemp 16))))