Re: [Qemu-devel] [PATCH 1/4] hw/ds1338.c: Fix handling of HOURS register.

[Antoine Mathys]

On 12/04/2012 06:42 PM, Peter Maydell wrote:
> This looks good as far as the logic goes, but I think we could use 
> some symbolic constants for the 12-hour and PM bits rather than all 
> the literal 0x20 0x40 0x60. thanks -- PMM 
I refrained from using symbolic constants for three reasons:
1. You need to refer to the datasheet anyway to understand what is going on.
2. The code is short and it is easy to keep track of a few constants.
3. Symbolic names, which can be quite long, tend to make the code harder 
rather than easier to read

It is largely a matter of preference though and I'm not opposed to the 
idea. I would appreciate naming suggestions though.

I propose not to have symbolic constants for the registers and to use 
CH, OSF, MODE12, PM for the various bits, provided such short names are 
acceptable. I'd really hate something like REG_HOURS_MODE12.