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/Q/isnanl.c
          +++ new/usr/src/lib/libm/common/Q/isnanl.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 isnanl = __isnanl
  32      -#endif
       30 +#pragma weak __isnanl = isnanl
  33   31  
  34   32  #include "libm.h"
  35   33  
  36   34  #if defined(__sparc)
  37   35  int
  38   36  isnanl(long double x) {
  39   37          int *px = (int *) &x;
  40   38          return ((px[0] & ~0x80000000) >= 0x7fff0000 &&
  41   39                  ((px[0] & ~0xffff0000) | px[1] | px[2] | px[3]) != 0);
  42   40  }

  43   41  #elif defined(__x86)
  44   42  int
  45   43  isnanl(long double x) {
  46   44          int *px = (int *) &x, t = px[2] & 0x7fff;
  47   45  #if defined(HANDLE_UNSUPPORTED)
  48   46          return (t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0 ||
  49   47                  t != 0 && (px[1] & 0x80000000) == 0);
  50   48  #else
  51   49          return (t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0);
  52   50  #endif
  53   51  }
  54   52  #endif  /* defined(__sparc) || defined(__x86) */

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