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util: handle zero in conversion of NTP timestamps

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Handle zero NTP timestamp in UTI_Ntp64ToTimespec() as a special value to
make it symmetric with UTI_TimespecToNtp64(). This is needed since
commit d75f6830f1, in which a timestamp is
converted back and forth without checking for zero.

It also makes zero NTP timestamps more apparent in debug output.
This commit is contained in:
Miroslav Lichvar 2017-01-10 17:23:47 +01:00
parent e28dfada8c
commit b0f7efd59e
1 changed files with 5 additions and 2 deletions
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7
util.c
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@ -754,8 +754,11 @@ UTI_Ntp64ToTimespec(NTP_int64 *src, struct timespec *dest)
{ {
uint32_t ntp_sec, ntp_frac; uint32_t ntp_sec, ntp_frac;
/* As yet, there is no need to check for zero - all processing that /* Zero is a special value */
has to detect that case is in the NTP layer */ if (UTI_IsZeroNtp64(src)) {
UTI_ZeroTimespec(dest);
return;
}
ntp_sec = ntohl(src->hi); ntp_sec = ntohl(src->hi);
ntp_frac = ntohl(src->lo); ntp_frac = ntohl(src->lo);