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moogoo78/elisp 跑步計算機

Created December 30, 2013 04:30
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elisp 跑步計算機
(defun run-calc (d hh mm ss)
"running calculator"
(interactive "nDistance (km): \nnHours: \nnMinutes: \nnSeconds: ")
(let ((km (* d 1000))
(tm (+ (* hh 3600) (* mm 60) ss)))
(setq hkm (/ tm d 60.0))
(setq hkm-m (/ tm d 60))
(setq hkm-s (% (/ tm d) 60))
(setq mpr (/ tm d 2.5))) ;;沒有進位
(message "%dkm, %02d:%02d:%02d => %.2f m/km (%dm%ds), %.2f s/round" d hh mm ss hkm hkm-m hkm-s mpr)
)
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