--- /dev/null	Sat May 10 12:09:32 2014
+++ new/usr/src/lib/libm/common/m9x/nearbyintl.c	Sat May 10 12:09:32 2014
@@ -0,0 +1,186 @@
+/*
+ * 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.
+ */
+
+#if defined(ELFOBJ)
+#pragma weak nearbyintl = __nearbyintl
+#endif
+
+#include "libm.h"
+#include "fma.h"
+#include "fenv_inlines.h"
+
+#if defined(__sparc)
+
+static union {
+	unsigned i;
+	float f;
+} snan = { 0x7f800001 };
+
+long double
+__nearbyintl(long double x) {
+	union {
+		unsigned i[4];
+		long double q;
+	} xx;
+	unsigned hx, sx, i, frac;
+	unsigned int fsr;
+	int rm, j;
+	volatile float	dummy;
+
+	xx.q = x;
+	sx = xx.i[0] & 0x80000000;
+	hx = xx.i[0] & ~0x80000000;
+
+	/* handle trivial cases */
+	if (hx >= 0x406f0000) {	/* x is nan, inf, or already integral */
+		/* check for signaling nan */
+		if ((hx > 0x7fff0000 || (hx == 0x7fff0000 &&
+			(xx.i[1] | xx.i[2] | xx.i[3]))) && !(hx & 0x8000)) {
+			dummy = snan.f;
+			dummy += snan.f;
+			xx.i[0] = sx | hx | 0x8000;
+		}
+		return (xx.q);
+	} else if ((hx | xx.i[1] | xx.i[2] | xx.i[3]) == 0)	/* x is zero */
+		return (x);
+
+	/* get the rounding mode */
+	__fenv_getfsr32(&fsr);
+	rm = fsr >> 30;
+
+	/* flip the sense of directed roundings if x is negative */
+	if (sx)
+		rm ^= rm >> 1;
+
+	/* handle |x| < 1 */
+	if (hx < 0x3fff0000) {
+		if (rm == FSR_RP || (rm == FSR_RN && (hx >= 0x3ffe0000 &&
+			((hx & 0xffff) | xx.i[1] | xx.i[2] | xx.i[3]))))
+			xx.i[0] = sx | 0x3fff0000;
+		else
+			xx.i[0] = sx;
+		xx.i[1] = xx.i[2] = xx.i[3] = 0;
+		return (xx.q);
+	}
+
+	/* round x at the integer bit */
+	j = 0x406f - (hx >> 16);
+	if (j >= 96) {
+		i = 1 << (j - 96);
+		frac = ((xx.i[0] << 1) << (127 - j)) | (xx.i[1] >> (j - 96));
+		if ((xx.i[1] & (i - 1)) | xx.i[2] | xx.i[3])
+			frac |= 1;
+		if (!frac)
+			return (x);
+		xx.i[1] = xx.i[2] = xx.i[3] = 0;
+		xx.i[0] &= ~(i - 1);
+		if (rm == FSR_RP || (rm == FSR_RN && (frac > 0x80000000u ||
+			(frac == 0x80000000 && (xx.i[0] & i)))))
+			xx.i[0] += i;
+	} else if (j >= 64) {
+		i = 1 << (j - 64);
+		frac = ((xx.i[1] << 1) << (95 - j)) | (xx.i[2] >> (j - 64));
+		if ((xx.i[2] & (i - 1)) | xx.i[3])
+			frac |= 1;
+		if (!frac)
+			return (x);
+		xx.i[2] = xx.i[3] = 0;
+		xx.i[1] &= ~(i - 1);
+		if (rm == FSR_RP || (rm == FSR_RN && (frac > 0x80000000u ||
+			(frac == 0x80000000 && (xx.i[1] & i))))) {
+			xx.i[1] += i;
+			if (xx.i[1] == 0)
+				xx.i[0]++;
+		}
+	} else if (j >= 32) {
+		i = 1 << (j - 32);
+		frac = ((xx.i[2] << 1) << (63 - j)) | (xx.i[3] >> (j - 32));
+		if (xx.i[3] & (i - 1))
+			frac |= 1;
+		if (!frac)
+			return (x);
+		xx.i[3] = 0;
+		xx.i[2] &= ~(i - 1);
+		if (rm == FSR_RP || (rm == FSR_RN && (frac > 0x80000000u ||
+			(frac == 0x80000000 && (xx.i[2] & i))))) {
+			xx.i[2] += i;
+			if (xx.i[2] == 0)
+				if (++xx.i[1] == 0)
+					xx.i[0]++;
+		}
+	} else {
+		i = 1 << j;
+		frac = (xx.i[3] << 1) << (31 - j);
+		if (!frac)
+			return (x);
+		xx.i[3] &= ~(i - 1);
+		if (rm == FSR_RP || (rm == FSR_RN && (frac > 0x80000000u ||
+			(frac == 0x80000000 && (xx.i[3] & i))))) {
+			xx.i[3] += i;
+			if (xx.i[3] == 0)
+				if (++xx.i[2] == 0)
+					if (++xx.i[1] == 0)
+						xx.i[0]++;
+		}
+	}
+
+	return (xx.q);
+}
+
+#elif defined(__x86)
+
+/* inline template */
+extern long double frndint(long double);
+
+long double
+__nearbyintl(long double x) {
+	long double z;
+	unsigned oldcwsw, cwsw;
+
+	/* save the control and status words, mask the inexact exception */
+	__fenv_getcwsw(&oldcwsw);
+	cwsw = oldcwsw | 0x00200000;
+	__fenv_setcwsw(&cwsw);
+
+	z = frndint(x);
+
+	/*
+	 * restore the control and status words, preserving all but the
+	 * inexact flag
+	 */
+	__fenv_getcwsw(&cwsw);
+	oldcwsw |= (cwsw & 0x1f);
+	__fenv_setcwsw(&oldcwsw);
+
+	return (z);
+}
+
+#else
+#error Unknown architecture
+#endif
