Function: prefix-numeric-value

prefix-numeric-value is a function defined in callint.c.

Signature

(prefix-numeric-value RAW)

Documentation

Return numeric meaning of raw prefix argument RAW.

A raw prefix argument is what you get from (interactive "P"). Its numeric meaning is what you would get from (interactive "p").

Source Code

// Defined in /usr/src/emacs/src/callint.c
{
  Lisp_Object val;

  if (NILP (raw))
    XSETFASTINT (val, 1);
  else if (EQ (raw, Qminus))
    XSETINT (val, -1);
  else if (CONSP (raw) && FIXNUMP (XCAR (raw)))
    val = XCAR (raw);
  else if (FIXNUMP (raw))
    val = raw;
  else
    XSETFASTINT (val, 1);

  return val;
}