Add some explanation for last change.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@52531 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/real.c b/gcc/real.c
index ad3d4b3..56b365e 100644 (file)
--- a/gcc/real.c
+++ b/gcc/real.c
@@ -209,7 +209,10 @@ typedef unsigned int UHItype __attribute__ ((mode (HI)));
 #endif
 
 /* Calculate the size of the generic "e" type.  This always has
-   identical in-memory size to REAL_VALUE_TYPE.
+   identical in-memory size to REAL_VALUE_TYPE.  The sizes are supposed
+   to be the same as well, but when REAL_VALUE_TYPE_SIZE is not evenly
+   divisible by HOST_BITS_PER_WIDE_INT we have some padding in
+   REAL_VALUE_TYPE.
    There are only two supported sizes: ten and six 16-bit words (160
    or 96 bits).  */