5262 libm needs to be carefully unifdef'd
5268 libm doesn't need to hide symbols which are already local

          --- old/usr/src/lib/libm/common/C/significand.c
          +++ new/usr/src/lib/libm/common/C/significand.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   30  #pragma weak significand = __significand
  32      -#endif
  33   31  
  34   32  #include "libm.h"
  35   33  
  36   34  double
  37   35  significand(double x) {
  38   36          int ix = ((int *) &x)[HIWORD] & ~0x80000000;
  39   37  
  40   38          /* weed out 0/+-Inf/NaN because C99 ilogb raises invalid on them */
  41   39          if ((ix | ((int *) &x)[LOWORD]) == 0 || ix >= 0x7ff00000)
  42   40  #if defined(FPADD_TRAPS_INCOMPLETE_ON_NAN)
  43   41                  return ((ix & 0x80000) != 0 ? x : x + x);
  44   42                  /* assumes sparc-like QNaN */
  45   43  #else
  46   44                  return (x + x);
  47   45  #endif
  48   46          else
  49   47                  return (scalbn(x, -ilogb(x)));
  50   48  }
    

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