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/fdimf.c
          +++ new/usr/src/lib/libm/common/m9x/fdimf.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 fdimf = __fdimf
  32      -#endif
  33   31  
  34   32  #include "libm.h"       /* for islessequal macro */
  35   33  
  36   34  float
  37   35  __fdimf(float x, float y) {
  38   36          /*
  39   37           * On SPARC v8plus/v9, this could be implemented as follows
  40   38           * (assuming %f0 = x, %f1 = y, return value left in %f0):
  41   39           *
  42   40           * fcmps        %fcc0,%f0,%f1

  43   41           * st           %g0,[scratch]   ! use fzero instead of st/ld
  44   42           * ld           [scratch],%f2   ! if VIS is available
  45   43           * fnegs        %f2,%f3
  46   44           * fmovsle      %fcc0,%f2,%f0
  47   45           * fmovsle      %fcc0,%f3,%f1
  48   46           * fsubs        %f0,%f1,%f0
  49   47           */
  50   48          if (islessequal(x, y)) {
  51   49                  x = 0.0f;
  52   50                  y = -x;
  53   51          }
  54   52          return (x - y);
  55   53  }

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