[cairo] _cairo_color_compute_shorts fails
with FPU set to single precision
fab672000 at yahoo.fr
Thu Aug 31 04:41:33 PDT 2006
> >because otherwise even values very near from 1.0 (like 1.0- 1.e-9) would be 65534.
>Yes, 65536 is the correct multiplier.
>> or better :
> to avoid round approx to 65536 when f is very close to 1
>I greatly prefer the approaches suggested earlier that don't require
>an epsilon value at all and simply touch up any 65536 results that
>come out of the multiplication.
Well epsilon seems useful this time because it will bug otherwise if values are between [1.0-1.e-20,1.0[
i.e: the following example:
int v = (int) ((1.0-1.e-20)*65536);
printf("val = %d\n",v);
will return 65536 (at least with my intel P4 ).
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