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authorDavid S. Miller <davem@davemloft.net>2012-11-16 21:39:54 -0800
committerDavid S. Miller <davem@davemloft.net>2012-11-16 21:39:54 -0800
commit8e18b86d4a78f1b96d587bb2b369550c664227a3 (patch)
tree4e075b6a0b781813844812fa5a7d3a8fe70a73fb /sysdeps/ieee754
parent12df29e2d24e96421b0ac7842acef79edb19c4af (diff)
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Fix BZ #14811 for ldbl-128 too.
	[BZ #14811]
	* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Saturate
	nonzero exponents with absolute value below 0x1p-128 to +/-
	0x1p-128.
Diffstat (limited to 'sysdeps/ieee754')
-rw-r--r--sysdeps/ieee754/ldbl-128/e_powl.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-128/e_powl.c b/sysdeps/ieee754/ldbl-128/e_powl.c
index 40fc314730..d131750718 100644
--- a/sysdeps/ieee754/ldbl-128/e_powl.c
+++ b/sysdeps/ieee754/ldbl-128/e_powl.c
@@ -149,7 +149,7 @@ __ieee754_powl (long double x, long double y)
 {
   long double z, ax, z_h, z_l, p_h, p_l;
   long double y1, t1, t2, r, s, t, u, v, w;
-  long double s2, s_h, s_l, t_h, t_l;
+  long double s2, s_h, s_l, t_h, t_l, ay;
   int32_t i, j, k, yisint, n;
   u_int32_t ix, iy;
   int32_t hx, hy;
@@ -282,6 +282,10 @@ __ieee754_powl (long double x, long double y)
 	return (hy > 0) ? huge * huge : tiny * tiny;
     }
 
+  ay = y > 0 ? y : -y;
+  if (ay < 0x1p-128)
+    y = y < 0 ? -0x1p-128 : 0x1p-128;
+
   n = 0;
   /* take care subnormal number */
   if (ix < 0x00010000)