--- /dev/null	Sat May 10 12:09:03 2014
+++ new/usr/src/lib/libm/common/Q/__cosl.c	Sat May 10 12:09:03 2014
@@ -0,0 +1,138 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * __k_cosl(long double x, long double y)
+ * kernel cos function on [-pi/4, pi/4], pi/4 ~ 0.785398164
+ * Input x is assumed to be bounded by ~pi/4 in magnitude.
+ * Input y is the tail of x.
+ *
+ * Table look up algorithm
+ *	1. by cos(-x) = cos(x), we may replace x by |x|
+ *	2. if x < 25/128 = [0x3ffc4000, 0] = 0.15625 , then
+ *	     if x < 2^-57 (hx < 0x3fc60000 0), return 1.0 with inexact if x!= 0
+ *	     z = x*x;
+ *	     if x <= 1/128 = 2**-7 = 0.0078125
+ *		cos(x)=1.0+z*(qq1+z*(qq2+z*(qq3+z*(qq4+z*qq5))))
+ *	     else
+ *	        cos(x)=1.0+z*(q1+ ... z*q8)
+ *	3. else
+ *		ht = (hx + 0x400)&0x7ffff800	(round x to a break point t)
+ *		lt = 0
+ *		i  = (hy-0x3ffc4000)>>11;	(i<=64)
+ *		x' = (x - t)+y 			(|x'| ~<= 2^-7
+ *	   By
+ *		cos(t+x')
+ *		  = cos(t)cos(x')-sin(t)sin(x')
+ *		  = cos(t)(1+z*(qq1+z*qq2))-[sin(t)]*x*(1+z*(pp1+z*pp2))
+ *		  = cos(t) + [cos(t)]*(z*(qq1+z*qq2))-
+ *				[sin(t)]*x*(1+z*(pp1+z*pp2))
+ *
+ *	   Thus,
+ *		let a= _TBL_cos_hi[i], b = _TBL_cos_lo[i], c= _TBL_sin_hi[i],
+ *		x = (x-t)+y
+ *		z = x*x;
+ *		cos(t+x) = a+(b+ (-c*x*(1+z*(pp1+z*pp2))+a*(z*(qq1+z*qq2)))
+ */
+
+#include "libm.h"
+
+extern const long double _TBL_cosl_hi[], _TBL_cosl_lo[], _TBL_sinl_hi[];
+static const long double
+	one	= 1.0L,
+/*
+ *                   3           11       -122.32
+ * |sin(x) - (x+pp1*x +...+ pp5*x  )| <= 2        for |x|<1/64
+ */
+	pp1	= -1.666666666666666666666666666586782940810e-0001L,
+	pp2	= +8.333333333333333333333003723660929317540e-0003L,
+	pp3	= -1.984126984126984076045903483778337804470e-0004L,
+	pp4	= +2.755731922361906641319723106210900949413e-0006L,
+	pp5	= -2.505198398570947019093998469135012057673e-0008L,
+/*
+ *		    2	         16       -117.11
+ * |cos(x) - (1+q1*x + ... + q8*x  )| <= 2        for |x|<= 0.15625
+ */
+	q1	= -4.999999999999999999999999999999756416975e-0001L,
+	q2	= +4.166666666666666666666666664006066577258e-0002L,
+	q3	= -1.388888888888888888888877700363937169637e-0003L,
+	q4	= +2.480158730158730158494468463031814083559e-0005L,
+	q5	= -2.755731922398586276322819250356005542871e-0007L,
+	q6	= +2.087675698767424261441959760729854017855e-0009L,
+	q7	= -1.147074481239662089072452129010790774761e-0011L,
+	q8	= +4.777761647399651599730663422263531034782e-0014L,
+/*
+ *		     2	         10       -123.84
+ * |cos(x) - (1+qq1*x +...+ qq5*x  )| <= 2        for |x|<=1/128
+ */
+	qq1	= -4.999999999999999999999999999999378373641e-0001L,
+	qq2	= +4.166666666666666666666665478399327703130e-0002L,
+	qq3	= -1.388888888888888888058211230618051613494e-0003L,
+	qq4	= +2.480158730156105377771585658905303111866e-0005L,
+	qq5	= -2.755728099762526325736488376695157008736e-0007L;
+
+#define	i0	0
+
+long double
+__k_cosl(long double x, long double y) {
+	long double a, t, z, w;
+	int *pt = (int *) &t, *px = (int *) &x;
+	int i, j, hx, ix;
+
+	t = 1.0L;
+	hx = px[i0];
+	ix = hx & 0x7fffffff;
+	if (ix < 0x3ffc4000) {
+		if (ix < 0x3fc60000)
+			if ((i = (int) x) == 0)
+				return (one);	/* generate inexact */
+		z = x * x;
+
+		if (ix < 0x3ff80000)	/* 0.0078125 */
+			return one + z * (qq1 + z * (qq2 + z * (qq3 +
+				z * (qq4 + z * qq5))));
+		else
+			return one + z * (q1 + z * (q2 + z * (q3 +
+				z * (q4 + z * (q5 + z * (q6 + z * (q7 +
+				z * q8)))))));
+	}
+	j = (ix + 0x400) & 0x7ffff800;
+	i = (j - 0x3ffc4000) >> 11;
+	pt[i0] = j;
+	if (hx > 0)
+		x = y - (t - x);
+	else
+		x = (-y) - (t + x);
+	a = _TBL_cosl_hi[i];
+	z = x * x;
+	t = z * (qq1 + z * (qq2 + z * (qq3 + z * (qq4 + z * qq5))));
+	w = x * (one + z * (pp1 + z * (pp2 + z * (pp3 + z * (pp4 + z * pp5)))));
+	t = _TBL_cosl_lo[i] - (_TBL_sinl_hi[i] * w - a * t);
+	return (a + t);
+}
