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[PATCH] Fix excessive ULP for y1_upward (0x2p+0) in test-float and test-ifloat.
- From: David Miller <davem at davemloft dot net>
- To: libc-alpha at sourceware dot org
- Date: Sat, 24 May 2014 21:59:24 -0400 (EDT)
- Subject: [PATCH] Fix excessive ULP for y1_upward (0x2p+0) in test-float and test-ifloat.
- Authentication-results: sourceware.org; auth=none
Ok for mainline?
* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_y1f): Force computations
to occur in round to nearest mode when |x| >= 2.0
---
ChangeLog | 5 +++++
sysdeps/ieee754/flt-32/e_j1f.c | 1 +
2 files changed, 6 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index 271e31d..1dd5794 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-05-24 David S. Miller <davem@davemloft.net>
+
+ * sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_y1f): Force computations
+ to occur in round to nearest mode when |x| >= 2.0
+
2014-05-23 Richard Henderson <rth@twiddle.net>
* nptl/pt-vfork.c (vfork_resolve): Rename from vfork_ifunc.
diff --git a/sysdeps/ieee754/flt-32/e_j1f.c b/sysdeps/ieee754/flt-32/e_j1f.c
index cb9f97f..a180968 100644
--- a/sysdeps/ieee754/flt-32/e_j1f.c
+++ b/sysdeps/ieee754/flt-32/e_j1f.c
@@ -107,6 +107,7 @@ __ieee754_y1f(float x)
return -HUGE_VALF+x; /* -inf and overflow exception. */
if(__builtin_expect(hx<0, 0)) return zero/(zero*x);
if(ix >= 0x40000000) { /* |x| >= 2.0 */
+ SET_RESTORE_ROUNDF (FE_TONEAREST);
__sincosf (x, &s, &c);
ss = -s-c;
cc = s-c;
--
1.8.1.2