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, 4 deletions

diff --git a/doc/lispref/numbers.texi b/doc/lispref/numbers.texi
index ee6456b1be1..74a313e2e10 100644
--- a/doc/lispref/numbers.texi
+++ b/doc/lispref/numbers.texi
@@ -1236,11 +1236,10 @@ other strings to choose various seed values.
 This function returns a pseudo-random integer.  Repeated calls return a
 series of pseudo-random integers.
 
-If @var{limit} is a positive integer, the value is chosen to be
+If @var{limit} is a positive fixnum, the value is chosen to be
 nonnegative and less than @var{limit}.  Otherwise, the value might be
-any integer representable in Lisp, i.e., an integer between
-@code{most-negative-fixnum} and @code{most-positive-fixnum}
-(@pxref{Integer Basics}).
+any fixnum, i.e., any integer from @code{most-negative-fixnum} through
+@code{most-positive-fixnum} (@pxref{Integer Basics}).
 
 If @var{limit} is @code{t}, it means to choose a new seed as if Emacs
 were restarting, typically from the system entropy.  On systems