text: /*
   * 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 __llround = llround
  #if defined(__sparcv9) || defined(__amd64)
  #pragma weak lround = llround
  #pragma weak __lround = llround
  #endif
  
  /*
   * llround(x) rounds its argument to the nearest integer, rounding
   * ties away from zero, and converts the result to a 64 bit signed
   * integer.
   *
   * If x is NaN, infinite, or so large that the nearest integer
   * would exceed 64 bits, the invalid operation exception is raised.
   */
  
  #include "libm.h"
  
  long long
  llround(double x) {
  	union {
  		unsigned i[2];
  		double d;
  	} xx;
  	unsigned hx, sx, i;
  
  	xx.d = x;
  	hx = xx.i[HIWORD] & ~0x80000000;
  	sx = xx.i[HIWORD] & 0x80000000;
  
  	if (hx < 0x43300000) { /* |x| < 2^52 */
  		/* handle |x| < 1 */
  		if (hx < 0x3ff00000) {
  			if (hx >= 0x3fe00000)
  				return (sx ? -1LL : 1LL);
  			return (0LL);
  		}
  
  		/* round x at the integer bit */
  		if (hx < 0x41300000) {
  			i = 1 << (0x412 - (hx >> 20));
  			xx.i[HIWORD] = (xx.i[HIWORD] + i) & ~(i | (i - 1));
  			xx.i[LOWORD] = 0;
  		} else {
  			i = 1 << (0x432 - (hx >> 20));
  			xx.i[LOWORD] += i;
  			if (xx.i[LOWORD] < i)
  				xx.i[HIWORD]++;
  			xx.i[LOWORD] &= ~(i | (i - 1));
  		}
  	}
  
  	/* now x is nan, inf, or integral */
  	return ((long long) xx.d);
  }
  