--- old/usr/src/lib/libm/common/m9x/fdim.c
          +++ new/usr/src/lib/libm/common/m9x/fdim.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 fdim = __fdim
  32   32  #endif
  33   33  
  34   34  /*
  35   35   * fdim(x,y) returns x - y if x > y, +0 if x <= y, and NaN if x and
  36   36   * y are unordered.

  37   37   *
  38   38   * fdim(x,y) raises overflow or inexact if x > y and x - y overflows
  39   39   * or is inexact.  It raises invalid if either operand is a signaling
  40   40   * NaN.  Otherwise, it raises no exceptions.
  41   41   */
  42   42  
  43   43  #include "libm.h"       /* for islessequal macro */
  44   44  
  45   45  double
  46   46  __fdim(double x, double y) {
  47      -#if defined(COMPARISON_MACRO_BUG)
  48      -        if (x == x && y == y && x <= y) {       /* } */
  49      -#else
  50   47          if (islessequal(x, y)) {
  51      -#endif
  52   48                  x = 0.0;
  53   49                  y = -x;
  54   50          }
  55   51          return (x - y);
  56   52  }
    

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