master 60d6e3f: eql doc improvements

[Paul Eggert]

branch: master
commit 60d6e3fead4eca9e6da94d4a2a80ca196dc480c5
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    eql doc improvements
    
    * doc/lispref/numbers.texi (Comparison of Numbers):
    Copy some useful text from eql help string.
    * src/fns.c (Feql): In doc string, say that eql also compares
    integers by value.
---
 doc/lispref/numbers.texi | 4 ++++
 src/fns.c                | 1 +
 2 files changed, 5 insertions(+)

diff --git a/doc/lispref/numbers.texi b/doc/lispref/numbers.texi
index f018ef4..9a5bff5 100644
--- a/doc/lispref/numbers.texi
+++ b/doc/lispref/numbers.texi
@@ -450,6 +450,10 @@ numbers.  It compares numbers by type and numeric value, 
so that
 @code{(eql 1.0 1)} returns @code{nil}, but @code{(eql 1.0 1.0)} and
 @code{(eql 1 1)} both return @code{t}.  This can be used to compare
 large integers as well as small ones.
+Floating-point values with the same sign, exponent and fraction are @code{eql}.
+This differs from numeric comparison: @code{(eql 0.0 -0.0)} returns
+@code{nil} and @code{(eql 0.0e+NaN 0.0e+NaN)} returns @code{t},
+whereas @code{=} does the opposite.
 @end defun
 
 @defun /= number-or-marker1 number-or-marker2
diff --git a/src/fns.c b/src/fns.c
index 4003fe8..f50bf8e 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -2295,6 +2295,7 @@ The PLIST is modified by side effects.  */)
 
 DEFUN ("eql", Feql, Seql, 2, 2, 0,
        doc: /* Return t if the two args are `eq' or are indistinguishable 
numbers.
+Integers with the same value are `eql'.
 Floating-point values with the same sign, exponent and fraction are `eql'.
 This differs from numeric comparison: (eql 0.0 -0.0) returns nil and
 \(eql 0.0e+NaN 0.0e+NaN) returns t, whereas `=' does the opposite.  */)