5261 libm should stop using synonyms.h

          --- old/usr/src/lib/libm/common/R/nextafterf.c
          +++ new/usr/src/lib/libm/common/R/nextafterf.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 nextafterf = __nextafterf
       30 +#pragma weak __nextafterf = nextafterf
  31   31  
  32   32  #include "libm.h"
  33   33  
  34   34  float
  35   35  nextafterf(float x, float y) {
  36   36          float w;
  37   37          int *pw = (int *) &w;
  38   38          int *px = (int *) &x;
  39   39          int *py = (int *) &y;
  40   40          int ix, iy, iz;

  41   41  
  42   42          ix = px[0];
  43   43          iy = py[0];
  44   44          if ((ix & ~0x80000000) > 0x7f800000)
  45   45                  return (x * y);         /* + -> * for Cheetah */
  46   46          if ((iy & ~0x80000000) > 0x7f800000)
  47   47                  return (y * x);         /* + -> * for Cheetah */
  48   48          if (ix == iy || (ix | iy) == 0x80000000)
  49   49                  return (y);             /* C99 requirement */
  50   50          if ((ix & ~0x80000000) == 0)
  51   51                  iz = 1 | (iy & 0x80000000);
  52   52          else if (ix > 0) {
  53   53                  if (ix > iy)
  54   54                          iz = ix - 1;
  55   55                  else
  56   56                          iz = ix + 1;
  57   57          } else {
  58   58                  if (iy < 0 && ix < iy)
  59   59                          iz = ix + 1;
  60   60                  else
  61   61                          iz = ix - 1;
  62   62          }
  63   63          pw[0] = iz;
  64   64          ix = iz & 0x7f800000;
  65   65          if (ix == 0x7f800000) {
  66   66                  /* raise overflow */
  67   67                  volatile float t;
  68   68  
  69   69                  *(int *) &t = 0x7f7fffff;
  70   70                  t *= t;
  71   71          } else if (ix == 0) {
  72   72                  /* raise underflow */
  73   73                  volatile float t;
  74   74  
  75   75                  *(int *) &t = 0x00800000;
  76   76                  t *= t;
  77   77          }
  78   78          return (w);
  79   79  }

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