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/m9x/modff.c
          +++ new/usr/src/lib/libm/common/m9x/modff.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 modff = __modff
  32   31  #pragma weak _modff = __modff
  33      -#endif
  34   32  
  35   33  #include "libm.h"
  36   34  
  37   35  float
  38   36  __modff(float x, float *iptr) {
  39   37          union {
  40   38                  unsigned i;
  41   39                  float f;
  42   40          } xx, yy;
  43   41          unsigned hx, s;

  44   42  
  45   43          xx.f = x;
  46   44          hx = xx.i & ~0x80000000;
  47   45  
  48   46          if (hx >= 0x4b000000) { /* x is NaN, infinite, or integral */
  49   47                  *iptr = x;
  50   48                  if (hx <= 0x7f800000)
  51   49                          xx.i &= 0x80000000;
  52   50                  return (xx.f);
  53   51          }
  54   52  
  55   53          if (hx < 0x3f800000) {  /* |x| < 1 */
  56   54                  xx.i &= 0x80000000;
  57   55                  *iptr = xx.f;
  58   56                  return (x);
  59   57          }
  60   58  
  61   59          /* split x at the binary point */
  62   60          s = xx.i & 0x80000000;
  63   61          yy.i = xx.i & ~((1 << (0x96 - (hx >> 23))) - 1);
  64   62          *iptr = yy.f;
  65   63          xx.f -= yy.f;
  66   64          xx.i = (xx.i & ~0x80000000) | s;
  67   65                                  /* restore sign in case difference is 0 */
  68   66          return (xx.f);
  69   67  }

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