CodeGeneration.CGenState.FSTL C# (CSharp) Method

        public void FSTL(Int32 imm, Reg to) => FSTL($"{imm}({RegToString(to)})");

 public override void CalcAndSaveDouble(CGenState state) {
     state.FSUB(1, 0);
     state.FSTL(0, Reg.ECX);
 }