--- 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   30  #if defined(ELFOBJ)
  31   31  #pragma weak fdimf = __fdimf
  32   32  #endif
  33   33  
  34   34  #include "libm.h"       /* for islessequal macro */
  35   35  
  36   36  float
  37   37  __fdimf(float x, float y) {
  38   38          /*
  39   39           * On SPARC v8plus/v9, this could be implemented as follows

  40   40           * (assuming %f0 = x, %f1 = y, return value left in %f0):
  41   41           *
  42   42           * fcmps        %fcc0,%f0,%f1
  43   43           * st           %g0,[scratch]   ! use fzero instead of st/ld
  44   44           * ld           [scratch],%f2   ! if VIS is available
  45   45           * fnegs        %f2,%f3
  46   46           * fmovsle      %fcc0,%f2,%f0
  47   47           * fmovsle      %fcc0,%f3,%f1
  48   48           * fsubs        %f0,%f1,%f0
  49   49           */
  50      -#if defined(COMPARISON_MACRO_BUG)
  51      -        if (x == x && y == y && x <= y) {       /* } */
  52      -#else
  53   50          if (islessequal(x, y)) {
  54      -#endif
  55   51                  x = 0.0f;
  56   52                  y = -x;
  57   53          }
  58   54          return (x - y);
  59   55  }
    

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