Net8 - Vector2.Normalize and old(?) CPU - wrong result #99391
Description
Description
Vector2.Normalize - wrong result and i think this is Cpu problem (.Net use some unsuported intrinsics?)
Reproduction Steps
Console.WriteLine(Vector2.Normalize(new(0,2)));
Expected behavior
<0 1>
Actual behavior
<0 ∞>
Regression?
In 7 and 8.0.preview.1 - works
8.0.preview.2, rc.1, 8.0.201 ... - issue
Known Workarounds
No response
Configuration
I reproduced this on intel celeron e3300 and intel p6100
(Win10 and Win7) x64
Other information
public static Vector2 Normalize2(Vector2 value)
{
if (Vector.IsHardwareAccelerated)
{
//-----------------------------------------------------------------------------
Console.WriteLine("HardwareAccelerated");
//-----------------------------------------------------------------------------
float length = value.Length();
return value / length;
}
else
{
float ls = value.X * value.X + value.Y * value.Y;
float invNorm = 1.0f / (float)Math.Sqrt((double)ls);
return new Vector2(
value.X * invNorm,
value.Y * invNorm);
}
}
code
var v1 = new Vector2(0,2);
Console.WriteLine(Vector2.Normalize(v1));
Console.WriteLine(Normalize2(v1));
shows
<0 ∞>
HardwareAccelerated
<0 1>