Don't use volatile in exp2f [committed]
Commit Message
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. Committed.
2015-09-23 Joseph Myers <joseph@codesourcery.com>
* sysdeps/ieee754/flt-32/e_exp2f.c (TWOM100): Remove volatile.
(TWO127): Likewise.
@@ -37,8 +37,8 @@
#include "t_exp2f.h"
-static const volatile float TWOM100 = 7.88860905e-31;
-static const volatile float TWO127 = 1.7014118346e+38;
+static const float TWOM100 = 7.88860905e-31;
+static const float TWO127 = 1.7014118346e+38;
float
__ieee754_exp2f (float x)