diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2015-09-23 22:52:13 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-09-23 22:52:13 +0000 |
| commit | cfcbebf7ac5de5bf1928201b6bd9cd5e6764b4a7 (patch) | |
| tree | 865093eaae5893910d88d19d38a4e36206a988c1 /ChangeLog | |
| parent | d96164c33012fccc7ba3ebb4d324c7fd0c6b5836 (diff) | |
| download | glibc-cfcbebf7ac5de5bf1928201b6bd9cd5e6764b4a7.tar.xz glibc-cfcbebf7ac5de5bf1928201b6bd9cd5e6764b4a7.zip | |
Don't use volatile in exp2f.
sysdeps/ieee754/flt-32/e_exp2f.c declares two variable as "static
const volatile float". Maybe this use of "volatile" was originally
intended to inhibit optimization of underflowing / overflowing
operations such as TWOM100 * TWOM100; in any case, it's not currently
needed, as given -frounding-math constant folding of such expressions
is properly disabled when it would be unsafe. This patch removes the
unnecessary use of "volatile".
Tested for x86_64.
* sysdeps/ieee754/flt-32/e_exp2f.c (TWOM100): Remove volatile.
(TWO127): Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -1,5 +1,8 @@ 2015-09-23 Joseph Myers <joseph@codesourcery.com> + * sysdeps/ieee754/flt-32/e_exp2f.c (TWOM100): Remove volatile. + (TWO127): Likewise. + * sysdeps/generic/math_private.h (fabs_tg): New macro. (min_of_type): Likewise. (math_check_force_underflow): Likewise. |