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Re: Greg Guerin <email@hidden>

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Re: Greg Guerin <email@hidden>

Subject: Re: Greg Guerin <email@hidden>
From: Bill Monk <email@hidden>
Date: Sun, 18 Jun 2006 09:59:33 -0500


On Jun 17, 2006, at 9:32 AM, email@hidden wrote:

If <fp.h> is being included, I suggest a simple test:
  if ( pi != M_PI )
    printf( "Well, isn't that interesting." );
  if ( pi/2.0 != M_PI_2 )
    printf( "Approximately half as interesting." );

Nothing printed, so pi == M_PI and pi/2.0 == M_PI_2. (<fp.h> and <math.h> both included via <Carbon/Carbon.h>; using -llibm compiler flag)

More ideas for simple tests.  Print the values of:

  M_PI - pi
  M_PI_2 - pi/2.0
  M_PI_2 - acos( 0.0 )
  M_PI_2 - asin( 1.0 )
  cos( acos( 0 ) )


0.00000000000000000000
0.00000000000000000000
0.00000000000000000000
0.00000000000000000000
0.00000000000000006123

Interesting. :)
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