awk: add a comment

diff --git a/editors/awk.c b/editors/awk.c
index 74e3adce52f1018203762f17c6e2fc5281db5570..6ebdec4d320c715ae0ba1599a377cdb5be71c78d 100644 (file)
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -825,6 +825,7 @@ static unsigned long getvar_i_int(var *v)
         * of target type range. Try to widen it as much as possible */
        if (d >= 0)
                return (unsigned long)d;
+       /* Why? Think about d == -4294967295.0 (assuming 32bit longs) */
        return - (long) (unsigned long) (-d);
 }