gpsd-dev
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Incorrect time unit names


From: Gary E. Miller
Subject: Re: Incorrect time unit names
Date: Sat, 9 Oct 2021 14:02:03 -0700

Yo Mick!

Thanks!  Your patch is pushed to git head.

On Sat, 9 Oct 2021 20:46:59 +0100
Mick Durkin <mickdurkinuk@gmail.com> wrote:

> Hi,
> 
> While inspecting the code of the tests for timespecs and the
> corresponding include file, I noticed one of the conversions was
> "reversed".
> 
> Specifically, there was a #define for the number of milliseconds in a
> nanosecond, which is clearly named backwards although the use in the
> code was correct.
> 
> Below are the 2 diffs I generated to correct this. Not important, but
> it satisfies my OCD 8^).
> 
> BR
> 
> Mick
> ===========================================================
> 
> Change to timespec.h
> 
> $ git diff -u include/timespec.h
> diff --git a/include/timespec.h b/include/timespec.h
> index f608cb4b1..c0dc36cd2 100644
> --- a/include/timespec.h
> +++ b/include/timespec.h
> @@ -10,13 +10,13 @@
>   #include <stdbool.h>       /* for bool */
> 
>   #define NS_IN_SEC       1000000000LL     /* nanoseconds in a second
> */ -#define MS_IN_NS        1000000LL        /* milliseconds in a
> nano second */ +#define NS_IN_MS        1000000LL        /*
> nanoseconds in a millisecond */ #define US_IN_SEC       1000000LL
>    /* microseconds in a second */ #define MS_IN_SEC       1000LL
>      /* milliseconds in a second */
> 
> -/* convert a timespec_t to an int64_t of milli seconds */
> +/* convert a timespec_t to an int64_t of milliseconds */
>   #define TSTOMS(ts) ((int64_t)((ts)->tv_sec) * MS_IN_SEC + \
> -                    (int64_t)((ts)->tv_nsec / MS_IN_NS))
> +                    (int64_t)((ts)->tv_nsec / NS_IN_MS))
> 
>   /* normalize a timespec
>    *
> 
> ===========================================================
> 
> Change to test_timespec.c
> 
> $ git diff -u tests/test_timespec.c
> diff --git a/tests/test_timespec.c b/tests/test_timespec.c
> index d2199fa0c..a45b99a29 100644
> --- a/tests/test_timespec.c
> +++ b/tests/test_timespec.c
> @@ -172,8 +172,8 @@ struct ts_to_ms_test ts_to_ms_tests[] = {
>           { TS_N_ONEM,        -60000, 0},
>           { TS_N_ONEH,        -3600000, 0},
>           { TS_N_ONED,        -86400000, 0},
> -        { { -1, MS_IN_NS},  -999, 0},
> -        { { -1, -MS_IN_NS}, -1001, 0},
> +        { { -1, NS_IN_MS},  -999, 0},
> +        { { -1, -NS_IN_MS}, -1001, 0},
>           // Note no (extra) loss of precision on the following
>           { TS_2037,          2145916799000ULL, 0},
>           { TS_2037_ONE,      2145916799000ULL, 0},
> 




RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

Attachment: pgpq0GpON6YKf.pgp
Description: OpenPGP digital signature


reply via email to

[Prev in Thread] Current Thread [Next in Thread]