Document use of comparison operators as infix operators

1 files changed, 36 insertions, 1 deletions

diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo
index 825fb38..95825c6 100644
--- a/gas/doc/as.texinfo
+++ b/gas/doc/as.texinfo
@@ -3311,7 +3311,7 @@ Intermediate precedence
 @end table
 
 @item
-Lowest Precedence
+Low Precedence
 
 @table @code
 @cindex addition, permitted arguments
@@ -3331,6 +3331,41 @@ result has the section of the left argument.
 If both arguments are in the same section, the result is absolute.
 You may not subtract arguments from different sections.
 @c FIXME is there still something useful to say about undefined - undefined ?
+
+@cindex comparison expressions
+@cindex expressions, comparison
+@item  ==
+@dfn{Is Equal To}
+@item <>
+@dfn{Is Not Equal To}
+@item <
+@dfn{Is Less Than}
+@itemx >
+@dfn{Is Greater Than}
+@itemx >=
+@dfn{Is Greater Than Or Equal To}
+@itemx <=
+@dfn{Is Less Than Or Equal To}
+
+The comparison operators can be used as infix operators.  A true results has a
+value of -1 whereas a false result has a value of 0.   Note, these operators
+perform signed comparisons.
+@end table
+
+@item Lowest Precedence
+
+@table @code
+@item &&
+@dfn{Logical And}.
+
+@item ||
+@dfn{Logical Or}.
+
+These two logical operations can be used to combine the results of sub
+expressions.  Note, unlike the comparison operators a true result returns a
+value of 1 but a false results does still return 0.  Also note that the logical
+or operator has a slightly lower precedence than logical and.
+
 @end table
 @end enumerate