--- /dev/null	Sat May 10 12:09:21 2014
+++ new/usr/src/lib/libm/common/complex/cpowl.c	Sat May 10 12:09:21 2014
@@ -0,0 +1,280 @@
+/*
+ * 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.
+ */
+
+#pragma weak cpowl = __cpowl
+
+#include "libm.h"				/* __k_clog_rl/__k_atan2l */
+/* atan2l/atan2pil/exp2l/expl/fabsl/hypotl/isinfl/logl/powl/sincosl/sincospil */
+#include "complex_wrapper.h"
+#include "longdouble.h" 
+
+#if defined(__sparc)
+#define	HALF(x)  ((int *) &x)[3] = 0; ((int *) &x)[2] &= 0xfe000000
+#define	LAST(x)  ((int *) &x)[3]
+#elif defined(__x86)
+#define	HALF(x)  ((int *) &x)[0] = 0
+#define	LAST(x)  ((int *) &x)[0]
+#endif
+
+/* INDENT OFF */
+static const int hiinf = 0x7fff0000;
+static const long double
+	tiny = 1.0e-4000L,
+	huge = 1.0e4000L,
+#if defined(__x86)
+		/* 43 significant bits, 21 trailing zeros */
+	ln2hil = 0.693147180559890330187045037746429443359375L,
+	ln2lol = 5.497923018708371174712471612513436025525412068e-14L,
+#else   /* sparc */
+		/* 0x3FF962E4 2FEFA39E F35793C7 00000000 */
+	ln2hil = 0.693147180559945309417231592858066493070671489074L,
+	ln2lol = 5.28600110075004828645286235820646730106802446566153e-25L,
+#endif
+	invln2  = 1.442695040888963407359924681001892137427e+0000L,
+	one = 1.0L,
+	zero = 0.0L;
+/* INDENT ON */
+
+/*
+ * Assuming |t[0]| > |t[1]| and |t[2]| > |t[3]|, sum4fpl subroutine
+ * compute t[0] + t[1] + t[2] + t[3] into two long double fp numbers.
+ */
+static long double sum4fpl(long double ta[], long double *w)
+{
+	long double t1, t2, t3, t4, w1, w2, t;
+	t1 = ta[0]; t2 = ta[1]; t3 = ta[2]; t4 = ta[3];
+	/*
+	 * Rearrange ti so that |t1| >= |t2| >= |t3| >= |t4|
+	 */
+	if (fabsl(t4) > fabsl(t1)) {
+		t = t1; t1 = t3; t3 = t;
+		t = t2; t2 = t4; t4 = t;
+	} else if (fabsl(t3) > fabsl(t1)) {
+		t = t1; t1 = t3;
+		if (fabsl(t4) > fabsl(t2)) {
+			t3 = t4; t4 = t2; t2 = t;
+		} else {
+			t3 = t2; t2 = t;
+		}
+	} else if (fabsl(t3) > fabsl(t2)) {
+		t = t2; t2 = t3;
+		if (fabsl(t4) > fabsl(t2)) {
+			t3 = t4; t4 = t;
+		} else
+			t3 = t;
+	}
+	/* summing r = t1 + t2 + t3 + t4 to w1 + w2 */
+	w1 = t3 + t4;
+	w2 = t4 - (w1 - t3);
+	t  = t2 + w1;
+	w2 += w1 - (t - t2);
+	w1 = t + w2;
+	w2 += t - w1;
+	t  = t1 + w1;
+	w2 += w1 - (t - t1);
+	w1 = t + w2;
+	*w = w2 - (w1 - t);
+	return (w1);
+}
+
+ldcomplex
+cpowl(ldcomplex z, ldcomplex w) {
+	ldcomplex ans;
+	long double x, y, u, v, t, c, s, r;
+	long double t1, t2, t3, t4, x1, x2, y1, y2, u1, v1, b[4], w1, w2;
+	int ix, iy, hx, hy, hv, hu, iu, iv, i, j, k;
+
+	x = LD_RE(z);
+	y = LD_IM(z);
+	u = LD_RE(w);
+	v = LD_IM(w);
+	hx = HI_XWORD(x);
+	hy = HI_XWORD(y);
+	hu = HI_XWORD(u);
+	hv = HI_XWORD(v);
+	ix = hx & 0x7fffffff;
+	iy = hy & 0x7fffffff;
+	iu = hu & 0x7fffffff;
+	iv = hv & 0x7fffffff;
+
+	j = 0;
+	if (v == zero) {	/* z**(real) */
+		if (u == one) {	/* (anything) ** 1  is itself */
+			LD_RE(ans) = x;
+			LD_IM(ans) = y;
+		} else if (u == zero) {	/* (anything) ** 0  is 1 */
+			LD_RE(ans) = one;
+			LD_IM(ans) = zero;
+		} else if (y == zero) {	/* real ** real */
+			LD_IM(ans) = zero;
+			if (hx < 0 && ix < hiinf && iu < hiinf) {
+			/* -x ** u  is exp(i*pi*u)*pow(x,u) */
+				r = powl(-x, u);
+				sincospil(u, &s, &c);
+				LD_RE(ans) = (c == zero)? c: c * r;
+				LD_IM(ans) = (s == zero)? s: s * r;
+			} else
+				LD_RE(ans) = powl(x, u);
+		} else if (x == zero || ix >= hiinf || iy >= hiinf) {
+			if (isnanl(x) || isnanl(y) || isnanl(u))
+				LD_RE(ans) = LD_IM(ans) = x + y + u;
+			else {
+				if (x == zero)
+					r = fabsl(y);
+				else
+					r = fabsl(x) + fabsl(y);
+				t = atan2pil(y, x);
+				sincospil(t * u, &s, &c);
+				LD_RE(ans) = (c == zero)? c: c * r;
+				LD_IM(ans) = (s == zero)? s: s * r;
+			}
+		} else if (fabsl(x) == fabsl(y)) {    /* |x| = |y| */
+			if (hx >= 0) {
+				t = (hy >= 0)? 0.25L : -0.25L;
+				sincospil(t * u, &s, &c);
+			} else if ((LAST(u) & 3) == 0) {
+				t = (hy >= 0)? 0.75L : -0.75L;
+				sincospil(t * u, &s, &c);
+			} else {
+				r = (hy >= 0)? u : -u;
+				t = -0.25L * r;
+				w1 = r + t;
+				w2 = t - (w1 - r);
+				sincospil(w1, &t1, &t2);
+				sincospil(w2, &t3, &t4);
+				s = t1 * t4 + t3 * t2;
+				c = t2 * t4 - t1 * t3;
+			}
+			if (ix < 0x3ffe0000)	/* |x| < 1/2 */
+				r = powl(fabsl(x + x), u) * exp2l(-0.5L * u);
+			else if (ix >= 0x3fff0000 || iu < 0x400cfff8)
+				/* |x| >= 1 or |u| < 16383 */
+				r = powl(fabsl(x), u) * exp2l(0.5L * u);
+			else   /* special treatment */
+				j = 2;
+			if (j == 0) {
+				LD_RE(ans) = (c == zero)? c: c * r;
+				LD_IM(ans) = (s == zero)? s: s * r;
+			}
+		} else
+			j = 1;
+		if (j == 0)
+			return (ans);
+	}
+	if (iu >= hiinf || iv >= hiinf || ix >= hiinf || iy >= hiinf) {
+		/*
+		 * non-zero imag part(s) with inf component(s) yields NaN
+		 */
+		t = fabsl(x) + fabsl(y) + fabsl(u) + fabsl(v);
+		LD_RE(ans) = LD_IM(ans) = t - t;
+	} else {
+		k = 0;	/* no scaling */
+		if (iu > 0x7ffe0000 || iv > 0x7ffe0000) {
+			u *= 1.52587890625000000000e-05L;
+			v *= 1.52587890625000000000e-05L;
+			k = 1;	/* scale u and v by 2**-16 */
+		}
+		/*
+		 * Use similated higher precision arithmetic to compute:
+		 * r = u * log(hypot(x, y)) - v * atan2(y, x)
+		 * q = u * atan2(y, x) + v * log(hypot(x, y))
+		 */
+
+		t1 = __k_clog_rl(x, y, &t2);
+		t3 = __k_atan2l(y, x, &t4);
+		x1 = t1; HALF(x1);
+		y1 = t3; HALF(y1);
+		u1 = u; HALF(u1);
+		v1 = v; HALF(v1);
+		x2 = t2 - (x1 - t1);    /* log(hypot(x,y)) = x1 + x2 */
+		y2 = t4 - (y1 - t3);    /* atan2(y,x) = y1 + y2 */
+		/* compute q = u * atan2(y, x) + v * log(hypot(x, y)) */
+		if (j != 2) {
+			b[0] = u1 * y1;
+			b[1] = (u - u1) * y1 + u * y2;
+			if (j == 1) {	/* v = 0 */
+				w1 = b[0] + b[1];
+				w2 = b[1] - (w1 - b[0]);
+			} else {
+				b[2] = v1 * x1;
+				b[3] = (v - v1) * x1 + v * x2;
+				w1 = sum4fpl(b, &w2);
+			}
+			sincosl(w1, &t1, &t2);
+			sincosl(w2, &t3, &t4);
+			s = t1 * t4 + t3 * t2;
+			c = t2 * t4 - t1 * t3;
+			if (k == 1)	/* square j times */
+				for (i = 0; i < 10; i++) {
+					t1 = s * c;
+					c = (c + s) * (c - s);
+					s = t1 + t1;
+				}
+		}
+		/* compute r = u * (t1, t2) - v * (t3, t4) */
+		b[0] = u1 * x1;
+		b[1] = (u - u1) * x1 + u * x2;
+		if (j == 1) {   /* v = 0 */
+			w1 = b[0] + b[1];
+			w2 = b[1] - (w1 - b[0]);
+		} else {
+			b[2] = -v1 * y1;
+			b[3] = (v1 - v) * y1 - v * y2;
+			w1 = sum4fpl(b, &w2);
+		}
+		/* scale back unless w1 is large enough to cause exception */
+		if (k != 0 && fabsl(w1) < 20000.0L) {
+			w1 *= 65536.0L; w2 *= 65536.0L;
+		}
+		hx = HI_XWORD(w1);
+		ix = hx & 0x7fffffff;
+		/* compute exp(w1 + w2) */
+		k = 0;
+		if (ix < 0x3f8c0000) /* exp(tiny < 2**-115) = 1 */
+			r = one;
+		else if (ix >= 0x400c6760) /* overflow/underflow */
+			r = (hx < 0)? tiny * tiny : huge * huge;
+		else {  /* compute exp(w1 + w2) */
+			k = (int) (invln2 * w1 + ((hx >= 0)? 0.5L : -0.5L));
+			t1 = (long double) k;
+			t2 = w1 - t1 * ln2hil;
+			t3 = w2 - t1 * ln2lol;
+			r = expl(t2 + t3);
+		}
+		if (c != zero) c *= r;
+		if (s != zero) s *= r;
+		if (k != 0) {
+			c = scalbnl(c, k);
+			s = scalbnl(s, k);
+		}
+		LD_RE(ans) = c;
+		LD_IM(ans) = s;
+	}
+	return (ans);
+}
