Re: [sc-dev] Re: .frac, .sign - perhaps other SimpleNumber primitives???

[Axel Balley <axel.lists@xxxxxxxxx>]

not sure of the where, but the why is because of the trick used to  
truncate float numbers, by adding a very large float to lose precision :

inline float32 sc_trunc(float32 x)
{
	// truncFloat is a number which causes a loss of precision of
	// the fractional part.
	// NOTE: this will only work if the FPU is set to round downward.
	// That is NOT the default rounding mode. SC sets it to this mode.
	float32 tmp1 = x + truncFloat;
	float32 tmp2 = tmp1 - truncFloat;
	return tmp2;
}


Le 16 déc. 09 à 11:28, Tim Blechmann a écrit :

> > Round downward was set in SC synth. At least it used to be. However  
> > it
> > was never set like that in SC lang as far as I am aware. So using the
> > same code as in the synth would be a bug.
>
> where is it set and why? (only for sc_trunk?)
>
> tim
>
> --
> tim@xxxxxxxxxx
> http://tim.klingt.org
>
> Most of the trouble in this world has been caused by folks who can't
> mind their own business, because they have no business of their own to
> mind, any more than a smallpox virus has.
>  William S. Burroughs


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