[PATCH] Fix excessive ULP for y1_upward (0x2p+0) in test-float and test-ifloat.

David Miller davem@davemloft.net
Sun May 25 10:18:00 GMT 2014


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



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