src-test2/games/grdc, branch release/8.4.0

MFC r203920,210755,210809,210827:

2010-08-17T16:25:44Z

- WARNS?=6 cleanup - fix timekeeping for user-supplied value n - de-obfuscate the timekeeping of now/delay

MFC r203760: Improve time precision for grdc(6):

2010-03-12T00:51:13Z

Traditionally, grdc would obtain time through time(3) which in turn gets only the second part of clock (CLOCK_SECOND), and sleep for 1 second after each screen refresh. This approach would have two problems. First, we are not guaranteed to be waken up at the beginning of a whole second, which will typically exhibit as a "lag" on second number. Second, because we sleep for whole second, and the refresh process would take some time, the error would accumulate from time to time, making the lag variable. Make grdc(6) to use time(3) to get time only at the beginning, and sample time in CLOCK_REALTIME_FAST granularity after refreshing, and use the nanosecond part to caculate how much time we want to sleep. PR: bin/120813

Handle 12-hour clocks properly: when the time is 00:00-00:59, adjust the

2003-06-23T16:01:11Z

hour to 12 so the time reads "12:00-12:59 AM".

mdoc(7) police: Make SYNOPSIS match usage().

2003-05-16T21:27:23Z

Approved by: re (blanket)

Add an option to print the time in 12-hour format.

2003-03-28T16:37:45Z

Submitted by: Samy Al Bahra

mdoc(7) police: Added the missing .Os call; it's not strictly

2002-12-11T15:55:29Z

necessary nowadays, but is documented as "required", and may become so again in the future. Approved by: re

- Only use sig_atomic_t objects in signal handlers.

2001-09-25T13:45:46Z

- Use getopt() to parse command line. - Add usage(). - WARNSify. - Convert manpage to mdoc(7). PR: bin/30641 Submitted by: Andrey Simonenko , ru MFC after: 1 week

- Backout botched attempt to intoduce MANSECT feature.

2001-03-26T14:22:12Z

- MAN[1-9] -> MAN.

Set the default manual section for games/ to 6.

2001-03-20T18:08:43Z

Remove unneded -ltermcap or -lmytinfo

2000-09-16T03:52:06Z