Re: Getting greatest decimal accuracy out of G_PI

[Sergei Steshenko <sergstesh yahoo com>]

--- David Neèas (Yeti) <yeti physics muni cz> wrote:

> On Fri, Feb 02, 2007 at 05:50:47PM -0500, zentara wrote:
> > 
> > I've tried printing G_PI with the %Lf.20 format and I'm still stuck with 
> > 15 decimal places of accuracy.
> 
> The definition of G_PI is IMO a bit misguided.  It has 50
> decimal digits, but I cannot imagine how this excessive
> precision could be used (except putting it into a string and
> parsing that) because long double literals need an `l'
> suffix:
> 
> #define MY_LONG_PI 3.1415926535897932384626433832795028841971693993751l
>                                                                       ^here
> 
> Yeti
> 

You can still use explicit cast, i.e.

((long double)G_PI)

, can't you ? Even without the trail 'l' you have correctly suggested to
add.

Regards,
  Sergei.

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