[3/3] gdiplus: Make GdipInvertMatrix test pass on native

[Michael Karcher]

Am Sonntag, den 13.07.2008, 01:14 +0200 schrieb Michael Karcher:
> Am Samstag, den 12.07.2008, 23:56 +0100 schrieb Reece Dunn:
> If you are brave enough to really find out what happens (might be
> different depending on Windows version, instruction sets available and
> things like that), also try the identity matrix scaled by 2^66 and
> 2^(-66). The square of 2^66 overflows a 32 bit floating point number.
Sorry, forgot denormals. The square of 2^(-66) *is* exactly
represenatable as float! Use 2^(-80) to be sure that the square
underflows.

Regards,
  Michael Karcher