Commit cac87e30 authored by Thien-Thi Nguyen's avatar Thien-Thi Nguyen
Browse files

(Fexpt): Use floats for negative exponent.

parent 3731a850
2005-08-06 Thien-Thi Nguyen <ttn@gnu.org>
* floatfns.c (Fexpt): Use floats for negative
exponent (computing a root). Reported by D Goel.
2005-08-02 Richard M. Stallman <rms@gnu.org>
 
* frame.c (Fframe_char_width): Doc fix.
......
......@@ -460,7 +460,8 @@ DEFUN ("expt", Fexpt, Sexpt, 2, 2, 0,
CHECK_NUMBER_OR_FLOAT (arg1);
CHECK_NUMBER_OR_FLOAT (arg2);
if (INTEGERP (arg1) /* common lisp spec */
&& INTEGERP (arg2)) /* don't promote, if both are ints */
&& INTEGERP (arg2) /* don't promote, if both are ints, and */
&& 0 <= XINT (arg2)) /* we are not computing the -ARG2 root */
{ /* this can be improved by pre-calculating */
EMACS_INT acc, x, y; /* some binary powers of x then accumulating */
Lisp_Object val;
......
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