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/fenv.c
          +++ new/usr/src/lib/libm/common/m9x/fenv.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 fex_merge_flags = __fex_merge_flags
       30 +#pragma weak __fex_merge_flags = fex_merge_flags
  31   31  
  32      -#pragma weak feholdexcept = __feholdexcept
  33      -#pragma weak feupdateenv = __feupdateenv
  34      -#pragma weak fegetenv = __fegetenv
  35      -#pragma weak fesetenv = __fesetenv
  36      -
  37      -#pragma weak feholdexcept96 = __feholdexcept96
  38      -#pragma weak feupdateenv96 = __feupdateenv
  39      -#pragma weak fegetenv96 = __fegetenv
  40      -#pragma weak fesetenv96 = __fesetenv
       32 +#pragma weak __feholdexcept = feholdexcept
       33 +#pragma weak __feupdateenv = feupdateenv
       34 +#pragma weak __fegetenv = fegetenv
       35 +#pragma weak __fesetenv = fesetenv
       36 +
       37 +#pragma weak feupdateenv96 = feupdateenv
       38 +#pragma weak fegetenv96 = fegetenv
       39 +#pragma weak fesetenv96 = fesetenv
  41   40  
  42      -#include "fenv_synonyms.h"
  43   41  #include <fenv.h>
  44   42  #include <ucontext.h>
  45   43  #include <thread.h>
  46   44  #include "fex_handler.h"
  47   45  #include "fenv_inlines.h"
  48   46  
  49   47  const fenv_t __fenv_dfl_env = {
  50   48          {
  51   49                  { FEX_NONSTOP, (void(*)())0 },
  52   50                  { FEX_NONSTOP, (void(*)())0 },

  53   51                  { FEX_NONSTOP, (void(*)())0 },
  54   52                  { FEX_NONSTOP, (void(*)())0 },
  55   53                  { FEX_NONSTOP, (void(*)())0 },
  56   54                  { FEX_NONSTOP, (void(*)())0 },
  57   55                  { FEX_NONSTOP, (void(*)())0 },
  58   56                  { FEX_NONSTOP, (void(*)())0 },
  59   57                  { FEX_NONSTOP, (void(*)())0 },
  60   58                  { FEX_NONSTOP, (void(*)())0 },
  61   59                  { FEX_NONSTOP, (void(*)())0 },
  62   60                  { FEX_NONSTOP, (void(*)())0 },
  63   61          },
  64   62  #ifdef __x86
  65   63          0x13000000
  66   64  #else
  67   65          0
  68   66  #endif
  69   67  };
  70   68  
  71   69  int feholdexcept(fenv_t *p)
  72   70  {
  73   71          (void) fegetenv(p);
  74   72          (void) feclearexcept(FE_ALL_EXCEPT);
  75   73          return !fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL);
  76   74  }
  77   75  
  78   76  int feholdexcept96(fenv_t *p)
  79   77  {
  80   78          (void) fegetenv(p);
  81   79          (void) feclearexcept(FE_ALL_EXCEPT);
  82   80          return fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL);
  83   81  }
  84   82  
  85   83  int feupdateenv(const fenv_t *p)
  86   84  {
  87   85          unsigned long   fsr;
  88   86  
  89   87          __fenv_getfsr(&fsr);
  90   88          (void) fesetenv(p);
  91   89          (void) feraiseexcept((int)__fenv_get_ex(fsr));
  92   90          return 0;
  93   91  }
  94   92  
  95   93  int fegetenv(fenv_t *p)
  96   94  {
  97   95          fex_getexcepthandler(&p->__handlers, FEX_ALL);
  98   96          __fenv_getfsr(&p->__fsr);
  99   97          return 0;
 100   98  }
 101   99  
 102  100  int fesetenv(const fenv_t *p)
 103  101  {
 104  102          __fenv_setfsr(&p->__fsr);
 105  103          fex_setexcepthandler(&p->__handlers, FEX_ALL);
 106  104          return 0;
 107  105  }
 108  106  
 109  107  void fex_merge_flags(const fenv_t *p)
 110  108  {
 111  109          unsigned long   fsr;
 112  110  
 113  111          __fenv_getfsr(&fsr);
 114  112          __fenv_set_ex(fsr, __fenv_get_ex(fsr) | __fenv_get_ex(p->__fsr));
 115  113          __fenv_setfsr(&fsr);
 116  114          if (fex_get_log())
 117  115                  __fex_update_te();
 118  116  }

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX