public AstNodeStm Vrot()
{
var imm5 = _instruction.Imm5;
var cosIndex = BitUtils.Extract(imm5, 0, 2);
var sinIndex = BitUtils.Extract(imm5, 2, 2);
var negateSin = BitUtils.ExtractBool(imm5, 4);
var dest = VecVd;
var src = CelVs;
AstNodeExpr sine = _ast.CallStatic((Func <float, float>)MathFloat.SinV1, src.Get());
AstNodeExpr cosine = _ast.CallStatic((Func <float, float>)MathFloat.CosV1, src.Get());
if (negateSin)
{
sine = -sine;
}
//Console.WriteLine("{0},{1},{2}", CosIndex, SinIndex, NegateSin);
return(dest.SetVector(index =>
{
if (index == cosIndex)
{
return cosine;
}
if (index == sinIndex)
{
return sine;
}
return (sinIndex == cosIndex) ? sine : 0f;
}, _pc));
}