Function: hif-string-to-decfloat

hif-string-to-decfloat is a byte-compiled function defined in hideif.el.gz.

Signature

(hif-string-to-decfloat STRING &optional FIX EXP)

Documentation

Convert a C(++) decimal floating formatted string into float.

Assuming we've just regexp-matched with hif-decfloat-regexp and it matched. if REMATCH is t, do a rematch.

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/hideif.el.gz
(defun hif-string-to-decfloat (string &optional fix exp)
  "Convert a C(++) decimal floating formatted string into float.
Assuming we've just regexp-matched with `hif-decfloat-regexp' and it matched.
if REMATCH is t, do a rematch."
  ;; In elisp `(string-to-number "01.e2")' will return 1 instead of the expected
  ;; 100.0; therefore we need to write our own.
  ;; This function relies on the regexp groups of `hif-hexfloat-regexp'
  (if (or fix exp)
      (setq fix (hif-delete-char-in-string ?' fix)
            exp (hif-delete-char-in-string ?' exp))
    ;; rematch
    (setq string (hif-delete-char-in-string ?' string))
    (hif-full-match hif-decfloat-regexp string)
    (setq fix (or (match-string 1 string)
                  (match-string 3 string)
                  (match-string 5 string))
          exp (or (match-string 2 string)
                  (match-string 4 string)
                  (match-string 6 string))))
  (setq fix (string-to-number fix)
        exp (if (zerop (length exp)) ;; nil or ""
                0 (string-to-number (substring-no-properties exp 1))))
  (* fix (expt 10 exp)))