5261 libm should stop using synonyms.h

          --- old/usr/src/lib/libm/common/m9x/ldexp.c
          +++ new/usr/src/lib/libm/common/m9x/ldexp.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 ldexp = __ldexp
       30 +#pragma weak __ldexp = ldexp
  31   31  
  32   32  #include "libm.h"
  33   33  #include <errno.h>
  34   34  
  35   35  double
  36   36  ldexp(double x, int n) {
  37   37          int *px = (int *) &x, ix = px[HIWORD] & ~0x80000000;
  38   38  
  39   39          if (ix >= 0x7ff00000 || (px[LOWORD] | ix) == 0)
  40   40  #if defined(FPADD_TRAPS_INCOMPLETE_ON_NAN)

  41   41                  return (ix >= 0x7ff80000 ? x : x + x);
  42   42                  /* assumes sparc-like QNaN */
  43   43  #else
  44   44                  return (x + x);
  45   45  #endif
  46   46          x = scalbn(x, n);
  47   47          ix = px[HIWORD] & ~0x80000000;
  48   48          /*
  49   49           * SVID3 requires both overflow and underflow cases to set errno
  50   50           * XPG3/XPG4/XPG4.2/SUSv2 requires overflow to set errno
  51   51           */
  52   52          if (ix >= 0x7ff00000 || (px[LOWORD] | ix) == 0)
  53   53                  errno = ERANGE;
  54   54          return (x);
  55   55  }

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