diff options
Diffstat (limited to 'doc/libstddjb/djbtime.html')
| -rw-r--r-- | doc/libstddjb/djbtime.html | 23 |
1 files changed, 4 insertions, 19 deletions
diff --git a/doc/libstddjb/djbtime.html b/doc/libstddjb/djbtime.html index 7eb5ee4..d20131e 100644 --- a/doc/libstddjb/djbtime.html +++ b/doc/libstddjb/djbtime.html @@ -34,21 +34,6 @@ and implemented in the <tt>libskarnet.a</tt> or <tt>libskarnet.so</tt> library. other time formats and user-friendly representations. </p> -<h2> The <tt>/etc/leapsecs.dat</tt> file </h2> - -<p> - User-friendly time is calculated from UTC. Internal time computations -should be performed on TAI time - because TAI flows linearly whereas -UTC does not. To convert between UTC and TAI time, you need a -<em>leap second table</em>. skalibs provides such a file in its -<tt>src/etc/leapsecs.dat</tt> subdirectory, which is copied -to <tt>/etc/leapsecs.dat</tt> at installation time (unless you specify -a --prefix or --datadir option to configure). -<strong>The <tt>/etc/leapsecs.dat</tt> file must remain accessible -on your system, else time conversions will not be computed -properly.</strong> -</p> - <h2> Data structures </h2> <ul> @@ -72,7 +57,7 @@ Converts the absolute TAI64 time in *<em>t</em> to an UTC time, stored in *<em>u</em> as an unsigned 64-bit integer. *<em>u</em> is actually 2^62 plus the number of seconds since the Epoch. The function returns 1 if it succeeds, or 0 (and sets errno) if an -error occurs (for instance: the leap second table cannot be found). +error occurs. </p> <p> @@ -81,7 +66,7 @@ Converts the UTC time in <em>u</em>, stored as an unsigned 64-bit integer (2^62 plus the number of seconds since the Epoch), to a TAI64 time in *<em>t</em>. The function returns 1 if it succeeds, or 0 (and sets errno) if an -error occurs (for instance: the leap second table cannot be found). +error occurs. </p> <h3> NTP </h3> @@ -92,7 +77,7 @@ Converts the absolute TAI64N time in *<em>a</em> to a 64-bit NTP timestamp, stored in *<em>ntp</em>. The higher 32 bits of *<em>ntp</em> represent a number of seconds ; the lower 32 bits are the fractional part of the timestamp. The function returns 1 if it succeeds, or 0 (and sets errno) if an -error occurs (for instance: the leap second table cannot be found, or +error occurs (for instance: *<em>a</em> cannot be represented in the valid NTP range). </p> @@ -101,7 +86,7 @@ error occurs (for instance: the leap second table cannot be found, or Converts the NTP timestamp in <em>ntp</em> to a TAI64N time in *<em>a</em>. The function returns 1 if it succeeds, or 0 (and sets errno) if an -error occurs (for instance: the leap second table cannot be found). +error occurs. </p> <h3> Local time </h3> |