Document that ‘random’ is limited to fixnums

Problem reported by Pip Cet (Bug#32463#20).
* doc/lispref/numbers.texi (Random Numbers):
* src/fns.c (Frandom): Adjust doc.

1 files changed, 3 insertions, 6 deletions

diff --git a/src/fns.c b/src/fns.c
index f6e68036413..a11de1b0827 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -56,15 +56,12 @@ DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0,
 }
 
 DEFUN ("random", Frandom, Srandom, 0, 1, 0,
-       doc: /* Return a pseudo-random number.
-All integers representable in Lisp, i.e. between `most-negative-fixnum'
-and `most-positive-fixnum', inclusive, are equally likely.
-
-With positive integer LIMIT, return random number in interval [0,LIMIT).
+       doc: /* Return a pseudo-random integer.
+By default, return a fixnum; all fixnums are equally likely.
+With positive fixnum LIMIT, return random integer in interval [0,LIMIT).
 With argument t, set the random number seed from the system's entropy
 pool if available, otherwise from less-random volatile data such as the time.
 With a string argument, set the seed based on the string's contents.
-Other values of LIMIT are ignored.
 
 See Info node `(elisp)Random Numbers' for more details.  */)
   (Lisp_Object limit)