fn unary_op_ss<'tcx>(
    ecx: &mut MiriInterpCx<'tcx>,
    which: FloatUnaryOp,
    op: &OpTy<'tcx>,
    dest: &MPlaceTy<'tcx>,
) -> InterpResult<'tcx, ()>Expand description
Performs which operation on the first component of op and copies
the other components. The result is stored in dest.