Function host_unary_float_op 

pub fn host_unary_float_op<'tcx, S: Semantics>(
    this: &mut MiriInterpCx<'tcx>,
    f: &OpTy<'tcx>,
    op: HostUnaryFloatOp,
    dest: &MPlaceTy<'tcx>,
) -> InterpResult<'tcx>
where
    IeeeFloat<S>: HostFloatOperation + IeeeExt + Float + Into<Scalar>,