public static ushort2 addsub(ushort2 a, ushort2 b)
{
if (Ssse3.IsSsse3Supported)
{
return(a + Ssse3.sign_epi16(b, new ushort2(1, ushort.MaxValue)));
}
else
{
return(a + select(b, (ushort2)(-(short2)b), new bool2(false, true)));
}
}
public static short8 sign(short8 x)
{
if (Ssse3.IsSsse3Supported)
{
return(Ssse3.sign_epi16(new short8(1), x));
}
else
{
return((x >> 15) | (short8)((ushort8)(-x) >> 15));
}
}
