Re: [PATCH V2 3/3] checkpatch: Emit an warning when floating pointvalues are used

From: Andrew Morton
Date: Tue Nov 06 2012 - 18:36:16 EST


On Thu, 1 Nov 2012 00:12:18 -0700
Joe Perches <joe@xxxxxxxxxxx> wrote:

> Linux kernel doesn't like floating point, say so.
>
> ...
>
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -2332,6 +2332,13 @@ sub process {
> "do not add new typedefs\n" . $herecurr);
> }
>
> +# check for floating point constants
> +
> + if ($line =~ /\b$Float\b/) {
> + WARN("KERNEL_FLOAT",
> + "Floating point is not supported in linux kernel source\n" . $herecurr);
> + }
> +
> # * goes on variable not on type
> # (char*[ const])
> while ($line =~ m{(\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\))}g) {

The earlier review comments were not addressed.

In particular, I don't see a problem with people doing

int foo = 1.1 * 2.2;
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