This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [PATCH] Use long for mantissa for generic mp code


On 2013-02-26 18:07, Siddhesh Poyarekar wrote:
+/* Truncate IN to a multiple of F, where F is a power of two.  */
>>+#define TRUNCATE_TO_MUL(in, f) ((in) & ~(f))
>
>Err, ~f?  Either this doesn't work at all, or the comment is wrong.
Ugh, it should be ~(f - 1).


Er... we are talking about in % f, when we can't necessarily prove that F is a power of 2?

Then no ~ at all, just (f-1).


r~



Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]