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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>

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          --- old/usr/src/lib/libm/common/C/atan2.c
          +++ new/usr/src/lib/libm/common/C/atan2.c
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  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 2006 Sun Microsystems, Inc.  All rights reserved.
  26   26   * Use is subject to license terms.
  27   27   */
  28   28  
  29      -#pragma weak atan2 = __atan2
       29 +#pragma weak __atan2 = atan2
  30   30  
  31   31  #include "libm.h"
  32   32  
  33   33  /*
  34   34   * Let t(0) = 1 and for i = 1, ..., 160, let t(i) be the slope of
  35   35   * the line bisecting the conical hull of the set of points (x,y)
  36   36   * where x and y are positive normal floating point numbers and
  37   37   * the high order words hx and hy of their binary representations
  38   38   * satisfy |hx - hy - i * 0x8000| <= 0x4000.  Then:
  39   39   *
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