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>

          --- old/usr/src/lib/libm/common/m9x/feround.c
          +++ new/usr/src/lib/libm/common/m9x/feround.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      -#pragma weak fegetround = __fegetround
  31      -#pragma weak fesetround = __fesetround
       30 +#pragma weak __fegetround = fegetround
       31 +#pragma weak __fesetround = fesetround
  32   32  
  33   33  #pragma weak fegetround96 = __fegetround
  34      -#pragma weak fesetround96 = __fesetround96
  35   34  
  36      -#include "fenv_synonyms.h"
  37   35  #include <fenv.h>
  38   36  #include <ucontext.h>
  39   37  #include <thread.h>
  40   38  #include "fex_handler.h"
  41   39  #include "fenv_inlines.h"
  42   40  
  43   41  #if defined(__i386) && !defined(__amd64)
  44   42  #include <float.h>
  45   43  #endif
  46   44  

  47   45  int fegetround(void)
  48   46  {
  49   47          unsigned long   fsr;
  50   48  
  51   49          __fenv_getfsr(&fsr);
  52   50          return (int)__fenv_get_rd(fsr);
  53   51  }
  54   52  
  55   53  int fesetround(int r)
  56   54  {
  57   55          unsigned long   fsr;
  58   56  
  59   57          if (r & ~3)
  60   58                  return -1;
  61   59          __fenv_getfsr(&fsr);
  62   60          __fenv_set_rd(fsr, r);
  63   61          __fenv_setfsr(&fsr);
  64   62  #if defined(__i386) && !defined(__amd64)
  65   63          FLT_ROUNDS = (0x2D >> (r << 1)) & 3;    /* 0->1, 1->3, 2->2, 3->0 */
  66   64  #endif
  67   65          return 0;
  68   66  }
  69   67  
  70   68  int fesetround96(int r)
  71   69  {
  72   70          unsigned long   fsr;
  73   71  
  74   72          if (r & ~3)
  75   73                  return 0;
  76   74          __fenv_getfsr(&fsr);
  77   75          __fenv_set_rd(fsr, r);
  78   76          __fenv_setfsr(&fsr);
  79   77  #if defined(__i386) && !defined(__amd64)
  80   78          FLT_ROUNDS = (0x2D >> (r << 1)) & 3;    /* 0->1, 1->3, 2->2, 3->0 */
  81   79  #endif
  82   80          return 1;
  83   81  }

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX