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[COMMITTED 4/4] alpha: Remove nearbyint and nearbyintf implementations
- From: Richard Henderson <rth at twiddle dot net>
- To: libc-alpha at sourceware dot org
- Date: Thu, 3 Jul 2014 11:00:46 -0700
- Subject: [COMMITTED 4/4] alpha: Remove nearbyint and nearbyintf implementations
- Authentication-results: sourceware.org; auth=none
- References: <1404410446-30243-1-git-send-email-rth at twiddle dot net>
The original implementation was written for EV5, which does not
record inexact in the status register for /SU (but no /I) insns.
But EV6 does record the inexact status; the lack of /I simply
means that the exception is suppressed.
Adding feholdexcept becomes the bulk of the overhead, so we might
as well use the default implementation.
---
* sysdeps/alpha/fpu/s_nearbyintf.c: Remove file.
* sysdeps/alpha/fpu/s_nearbyint.c (__nearbyint): Remove;
include sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c.
---
ChangeLog | 4 ++++
sysdeps/alpha/fpu/s_nearbyint.c | 27 +----------------------
sysdeps/alpha/fpu/s_nearbyintf.c | 46 ----------------------------------------
3 files changed, 5 insertions(+), 72 deletions(-)
delete mode 100644 sysdeps/alpha/fpu/s_nearbyintf.c
diff --git a/sysdeps/alpha/fpu/s_nearbyint.c b/sysdeps/alpha/fpu/s_nearbyint.c
index ed6c997..dc13910 100644
--- a/sysdeps/alpha/fpu/s_nearbyint.c
+++ b/sysdeps/alpha/fpu/s_nearbyint.c
@@ -16,33 +16,8 @@
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
-#include <math.h>
-#include <math_ldbl_opt.h>
+#include <sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c>
-
-double
-__nearbyint (double x)
-{
- if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
- {
- double tmp1, new_x;
- __asm ("cvttq/svd %2,%1\n\t"
- "cvtqt/d %1,%0\n\t"
- : "=f"(new_x), "=&f"(tmp1)
- : "f"(x));
-
- /* nearbyint(-0.1) == -0, and in general we'll always have the same
- sign as our input. */
- x = copysign(new_x, x);
- }
- return x;
-}
-
-weak_alias (__nearbyint, nearbyint)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__nearbyint, __nearbyintl)
-weak_alias (__nearbyint, nearbyintl)
-#endif
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
compat_symbol (libm, __nearbyint, nearbyintl, GLIBC_2_1);
#endif