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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/sincos.c
          +++ new/usr/src/lib/libm/common/C/sincos.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 2005 Sun Microsystems, Inc.  All rights reserved.
  26   26   * Use is subject to license terms.
  27   27   */
  28   28  
  29      -#pragma weak sincos = __sincos
       29 +#pragma weak __sincos = sincos
  30   30  
  31   31  /* INDENT OFF */
  32   32  /*
  33   33   * sincos(x,s,c)
  34   34   * Accurate Table look-up algorithm by K.C. Ng, 2000.
  35   35   *
  36   36   * 1. Reduce x to x>0 by cos(-x)=cos(x), sin(-x)=-sin(x).
  37   37   * 2. For 0<= x < 8, let i = (64*x chopped)-10. Let d = x - a[i], where
  38   38   *    a[i] is a double that is close to (i+10.5)/64 (and hence |d|< 10.5/64)
  39   39   *    and such that sin(a[i]) and cos(a[i]) is close to a double (with error
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