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5261 libm should stop using synonyms.h

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          --- old/usr/src/lib/libm/amd64/src/exp2l.s
          +++ new/usr/src/lib/libm/amd64/src/exp2l.s
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  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   29          .file "exp2l.s"
  30   30  
  31   31  #include "libm.h"
  32   32  LIBM_ANSI_PRAGMA_WEAK(exp2l,function)
  33      -#include "libm_synonyms.h"
  34   33  
  35   34          ENTRY(exp2l)
  36   35          movl    16(%rsp),%ecx           / cx <--sign&bexp(x)
  37   36          andl    $0x7fff,%ecx            / ecx <-- zero_xtnd(bexp(x))
  38   37          cmpl    $0x3fff,%ecx            / Is |x| <= 1?
  39   38          jb      .shortcut               / If so, take a shortcut.
  40   39          je      .check_tail             / |x| may be slightly > 1
  41   40  .general_case:                          / Here, |x| > 1 or x is NaN
  42   41          cmpl    $0x7fff,%ecx            / bexp(|x|) = bexp(INF)?
  43   42          je      .not_finite             / if so, x is not finite
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