Hello I have figured out that calc-eval might do the job for the floating point problem for org.
(info "(calc) Calling Calc from Your Programs") (calc-eval "83.6+0.1") So in the function org-table-sum I have made the following modification: > (res (string-to-number (calc-eval (combine-and-quote-strings (mapcar > 'number-to-string numbers ) "+")))) modified lisp/org-table.el @@ -4771,7 +4771,7 @@ If NLAST is a number, only the NLAST fields will actually be summed." (nreverse items)))) (numbers (delq nil (mapcar #'org-table--number-for-summing items1))) - (res (apply '+ numbers)) + (res (string-to-number (calc-eval (combine-and-quote-strings (mapcar 'number-to-string numbers ) "+")))) (sres (if (= org-timecnt 0) (number-to-string res) (setq diff (* 3600 res) I believe that the org-table--number-for-summing function can be bypassed but my elisp foo is weak. Feel free to improve. Best regards Jeremie