5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>
5262 libm needs to be carefully unifdef'd
5268 libm doesn't need to hide symbols which are already local
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Approved by: Gordon Ross <gwr@nexenta.com>

          --- old/usr/src/lib/libm/common/m9x/llround.c
          +++ new/usr/src/lib/libm/common/m9x/llround.c

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *
  13   13   * When distributing Covered Code, include this CDDL HEADER in each
  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END

  20   20   */
  21   21  
  22   22  /*
  23   23   * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  24   24   */
  25   25  /*
  26   26   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  27   27   * Use is subject to license terms.
  28   28   */
  29   29  
  30      -#if defined(ELFOBJ)
  31      -#pragma weak llround = __llround
       30 +#pragma weak __llround = llround
  32   31  #if defined(__sparcv9) || defined(__amd64)
  33      -#pragma weak lround = __llround
  34      -#pragma weak __lround = __llround
  35      -#endif
       32 +#pragma weak lround = llround
       33 +#pragma weak __lround = llround
  36   34  #endif
  37   35  
  38   36  /*
  39   37   * llround(x) rounds its argument to the nearest integer, rounding
  40   38   * ties away from zero, and converts the result to a 64 bit signed
  41   39   * integer.
  42   40   *
  43   41   * If x is NaN, infinite, or so large that the nearest integer
  44   42   * would exceed 64 bits, the invalid operation exception is raised.
  45   43   */

  46   44  
  47   45  #include "libm.h"
  48   46  
  49   47  long long
  50   48  llround(double x) {
  51   49          union {
  52   50                  unsigned i[2];
  53   51                  double d;
  54   52          } xx;
  55   53          unsigned hx, sx, i;
  56   54  
  57   55          xx.d = x;
  58   56          hx = xx.i[HIWORD] & ~0x80000000;
  59   57          sx = xx.i[HIWORD] & 0x80000000;
  60   58  
  61   59          if (hx < 0x43300000) { /* |x| < 2^52 */
  62   60                  /* handle |x| < 1 */
  63   61                  if (hx < 0x3ff00000) {
  64   62                          if (hx >= 0x3fe00000)
  65   63                                  return (sx ? -1LL : 1LL);
  66   64                          return (0LL);
  67   65                  }
  68   66  
  69   67                  /* round x at the integer bit */
  70   68                  if (hx < 0x41300000) {
  71   69                          i = 1 << (0x412 - (hx >> 20));
  72   70                          xx.i[HIWORD] = (xx.i[HIWORD] + i) & ~(i | (i - 1));
  73   71                          xx.i[LOWORD] = 0;
  74   72                  } else {
  75   73                          i = 1 << (0x432 - (hx >> 20));
  76   74                          xx.i[LOWORD] += i;
  77   75                          if (xx.i[LOWORD] < i)
  78   76                                  xx.i[HIWORD]++;
  79   77                          xx.i[LOWORD] &= ~(i | (i - 1));
  80   78                  }
  81   79          }
  82   80  
  83   81          /* now x is nan, inf, or integral */
  84   82          return ((long long) xx.d);
  85   83  }

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX