Re: [PATCH 2/2] adjtimex.2: Change 'PPM' (parts per million) to 'ppm'

From: Michael Kerrisk (man-pages)
Date: Tue Jan 06 2015 - 10:20:59 EST


On 01/03/2015 12:07 AM, Laurent Georget wrote:
> Hi again,
>
> this is the second patch of the new series of patchs for adjtimex.2.
>
> This is a trivia patch correcting "PPM" (parts per million) to
> the more usual "ppm".
> Credits to Jeff Epler <jepler@xxxxxxxxxxxxxx>.

Thanks, Laurent (andf Jeff). Patch applied.

Laurent, please watch out: your patches are injecting trailing
white space on lines. My release scripts clean those up, but
it means that patches apply with "noise".

Cheers,

Michael

>
> ---
> man2/adjtimex.2 | 15 +++++++--------
> 1 file changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/man2/adjtimex.2 b/man2/adjtimex.2
> index ff4b23e..dbb2333 100644
> --- a/man2/adjtimex.2
> +++ b/man2/adjtimex.2
> @@ -54,7 +54,7 @@ struct timex {
> long offset; /* Time offset; nanoseconds, if STA_NANO
> status flag is set, otherwise
> microseconds */
> - long freq; /* Frequency offset, in units of 2^-16 PPM
> + long freq; /* Frequency offset, in units of 2^-16 ppm
> (parts per million) (see NOTES below) */
> long maxerror; /* Maximum error (microseconds) */
> long esterror; /* Estimated error (microseconds) */
> @@ -62,8 +62,7 @@ struct timex {
> long constant; /* PLL (phase-locked loop) time constant */
> long precision; /* Clock precision (microseconds,
> read-only) */
> - long tolerance; /* Clock frequency tolerance (PPM,
> - read-only) */
> + long tolerance; /* Clock frequency tolerance (ppm, read-only) */
> struct timeval time;
> /* Current time (read-only, except for
> ADJ_SETOFFSET); upon return, time.tv_usec
> @@ -71,13 +70,13 @@ struct timex {
> flag is set, otherwise microseconds */
> long tick; /* Microseconds between clock ticks */
> long ppsfreq; /* PPS (pulse per second) frequency
> - (2^-16 PPM (see NOTES), read-only) */
> + (2^-16 ppm (see NOTES), read-only) */
> long jitter; /* PPS jitter (read-only); nanoseconds, if
> STA_NANO status flag is set, otherwise
> microseconds */
> int shift; /* PPS interval duration
> (seconds, read-only) */
> - long stabil; /* PPS stability (2^-16 PPM (see NOTES), read-only) */
> + long stabil; /* PPS stability (2^-16 ppm (see NOTES), read-only) */
> long jitcnt; /* PPS jitter limit exceeded (read-only) */
> long calcnt; /* PPS calibration intervals (read-only) */
> long errcnt; /* PPS calibration errors (read-only) */
> @@ -349,9 +348,9 @@ In struct
> .IR ppsfreq ,
> and
> .I stabil
> -are PPM (parts per million) with a 16-bits fractional part, which means that a
> -value of 1 in one of those fields actually means 2^-16 PPM, and 2^16=65535 is
> -1 PPM. This is the case for both input values (in the case of
> +are ppm (parts per million) with a 16-bits fractional part, which means that a
> +value of 1 in one of those fields actually means 2^-16 ppm, and 2^16=65535 is
> +1 ppm. This is the case for both input values (in the case of
> .IR freq )
> and output values.
> .SH CONFORMING TO
>


--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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