5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>

          --- old/usr/src/lib/libm/common/complex/clogf.c
          +++ new/usr/src/lib/libm/common/complex/clogf.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   * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23   23   */
  24   24  /*
  25   25   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26   26   * Use is subject to license terms.
  27   27   */
  28   28  
  29      -#pragma weak clogf = __clogf
       29 +#pragma weak __clogf = clogf
  30   30  
  31   31  #include "libm.h"
  32   32  #include "complex_wrapper.h"
  33   33  
  34   34  #if defined(__i386) && !defined(__amd64)
  35   35  extern int __swapRP(int);
  36   36  #endif
  37   37  
  38   38  fcomplex
  39   39  clogf(fcomplex z) {

  40   40          fcomplex        ans;
  41   41          float           x, y, ax, ay;
  42   42          double          dx, dy;
  43   43          int             ix, iy, hx, hy;
  44   44  
  45   45          x = F_RE(z);
  46   46          y = F_IM(z);
  47   47          hx = THE_WORD(x);
  48   48          hy = THE_WORD(y);
  49   49          ix = hx & 0x7fffffff;
  50   50          iy = hy & 0x7fffffff;
  51   51          ay = fabsf(y);
  52   52          ax = fabsf(x);
  53   53          F_IM(ans) = atan2f(y, x);
  54   54          if (ix >= 0x7f800000 || iy >= 0x7f800000) {
  55   55                  /* x or y is Inf or NaN */
  56   56                  if (iy == 0x7f800000)
  57   57                          F_RE(ans) = ay;
  58   58                  else if (ix == 0x7f800000)
  59   59                          F_RE(ans) = ax;
  60   60                  else
  61   61                          F_RE(ans) = ax + ay;
  62   62          } else {
  63   63  #if defined(__i386) && !defined(__amd64)
  64   64                  int     rp = __swapRP(fp_extended);
  65   65  #endif
  66   66                  dx = (double)ax;
  67   67                  dy = (double)ay;
  68   68                  if (ix == 0x3f800000)
  69   69                          F_RE(ans) = (float)(0.5 * log1p(dy * dy));
  70   70                  else if (iy == 0x3f800000)
  71   71                          F_RE(ans) = (float)(0.5 * log1p(dx * dx));
  72   72                  else if ((ix | iy) == 0)
  73   73                          F_RE(ans) = -1.0f / ax;
  74   74                  else
  75   75                          F_RE(ans) = (float)(0.5 * log(dx * dx + dy * dy));
  76   76  #if defined(__i386) && !defined(__amd64)
  77   77                  if (rp != fp_extended)
  78   78                          (void) __swapRP(rp);
  79   79  #endif
  80   80          }
  81   81          return (ans);
  82   82  }

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX