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Annual NTP kernel code spring-cleaning:

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Use int64_t rather than long long for the fixpoint type.

Don't discard fractional nanosecond frequency correction.
This commit is contained in:
Poul-Henning Kamp 2004-03-14 15:23:05 +00:00
parent 1a490c95d2
commit bcfe6d8b26
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=126974
1 changed files with 11 additions and 8 deletions
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19
sys/kern/kern_ntptime.c
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@ -50,10 +50,10 @@ __FBSDID("$FreeBSD$");
/*
* Single-precision macros for 64-bit machines
*/
typedef long long l_fp;
typedef int64_t l_fp;
#define L_ADD(v, u) ((v) += (u))
#define L_SUB(v, u) ((v) -= (u))
#define L_ADDHI(v, a) ((v) += (long long)(a) << 32)
#define L_ADDHI(v, a) ((v) += (int64_t)(a) << 32)
#define L_NEG(v) ((v) = -(v))
#define L_RSHIFT(v, n) \
do { \
@ -65,7 +65,7 @@ typedef long long l_fp;
#define L_MPY(v, a) ((v) *= (a))
#define L_CLR(v) ((v) = 0)
#define L_ISNEG(v) ((v) < 0)
#define L_LINT(v, a) ((v) = (long long)(a) << 32)
#define L_LINT(v, a) ((v) = (int64_t)(a) << 32)
#define L_GINT(v) ((v) < 0 ? -(-(v) >> 32) : (v) >> 32)
/*
@ -357,8 +357,13 @@ ntp_adjtime(struct thread *td, struct ntp_adjtime_args *uap)
L_LINT(time_freq, MAXFREQ);
else if (freq < -MAXFREQ)
L_LINT(time_freq, -MAXFREQ);
else
L_LINT(time_freq, freq);
else {
/*
* ntv.freq is [PPM * 2^16] = [us/s * 2^16]
* time_freq is [ns/s * 2^32]
*/
time_freq = ntv.freq * 1000LL * 65536LL;
}
#ifdef PPS_SYNC
pps_freq = time_freq;
#endif /* PPS_SYNC */
@ -548,10 +553,8 @@ ntp_update_second(int64_t *adjustment, time_t *newsec)
tickrate = 500;
else if (time_adjtime < -500)
tickrate = -500;
else if (time_adjtime != 0)
tickrate = time_adjtime;
else
tickrate = 0; /* GCC sucks! */
tickrate = time_adjtime;
time_adjtime -= tickrate;
L_LINT(ftemp, tickrate * 1000);
L_ADD(time_adj, ftemp);