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| author | Stephen L Moshier <moshier@mediaone.net> | 2000-04-12 07:57:37 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-04-12 00:57:37 -0700 |
| commit | 1817104857bbe7dc96c2834b6b1472aa6359244b (patch) | |
| tree | 4cb0039b1670cfacde6ddbbb1e02842961e75b23 /gcc | |
| parent | 298d6f60996d885b092748404528b60159a359ca (diff) | |
| download | gcc-1817104857bbe7dc96c2834b6b1472aa6359244b.zip gcc-1817104857bbe7dc96c2834b6b1472aa6359244b.tar.gz gcc-1817104857bbe7dc96c2834b6b1472aa6359244b.tar.bz2 | |
Stephen L Moshier <moshier@mediaone.net>
* real.h (MAX_LONG_DOUBLE_TYPE_SIZE): Comment.
* real.c (toe64): Revert previous change.
From-SVN: r33097
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/real.c | 10 | ||||
| -rw-r--r-- | gcc/real.h | 5 |
3 files changed, 17 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 595d54a..3888e78 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2000-04-12 Stephen L Moshier <moshier@mediaone.net> + + * real.h (MAX_LONG_DOUBLE_TYPE_SIZE): Comment. + * real.c (toe64): Revert previous change. + 2000-04-12 Jakub Jelinek <jakub@redhat.com> * objc/objc-act.c: Include ggc.h. @@ -3646,9 +3646,13 @@ toe64 (a, b) else { q = b + 4; /* point to output exponent */ -#if MAX_LONG_DOUBLE_TYPE_SIZE == 96 - /* Clear the last two bytes of 12-byte Intel format */ - *(q+1) = 0; + /* The purpose of this conditional is to avoid scribbling beyond + the end of a long double, in case the type is only 80 bits wide. */ + if (LONG_DOUBLE_TYPE_SIZE == 96) + { + /* Clear the last two bytes of 12-byte Intel format */ + *(q+1) = 0; + } #endif } #endif @@ -68,6 +68,11 @@ Boston, MA 02111-1307, USA. */ #ifndef LONG_DOUBLE_TYPE_SIZE #define LONG_DOUBLE_TYPE_SIZE 64 #endif +/* MAX_LONG_DOUBLE_TYPE_SIZE is a constant tested by #if. + LONG_DOUBLE_TYPE_SIZE can vary at compiler run time. + So long as macros like REAL_VALUE_TO_TARGET_LONG_DOUBLE cannot + vary too, however, then XFmode and TFmode long double + cannot both be supported at the same time. */ #ifndef MAX_LONG_DOUBLE_TYPE_SIZE #define MAX_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE #endif |