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authorLaurent Bercot <ska-skaware@skarnet.org>2015-01-09 01:00:59 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2015-01-09 01:00:59 +0000
commit1c032ec5855551c44b88f94fc35fa87db4279f0a (patch)
tree4aabf428c1346f01dbb65d726450d18add172603 /src/libstddjb/time_from_tai.c
parentc2b04f3c900553ce385203b54e351df0e79449e1 (diff)
downloadskalibs-1c032ec5855551c44b88f94fc35fa87db4279f0a.tar.xz
tai conversion functions overhaul.
API change -> rc for 2.2.0.0 Doc updated.
Diffstat (limited to 'src/libstddjb/time_from_tai.c')
-rw-r--r--src/libstddjb/time_from_tai.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/libstddjb/time_from_tai.c b/src/libstddjb/time_from_tai.c
new file mode 100644
index 0000000..e03b8c5
--- /dev/null
+++ b/src/libstddjb/time_from_tai.c
@@ -0,0 +1,17 @@
+ /* ISC license. */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <skalibs/sysdeps.h>
+#include <skalibs/tai.h>
+
+int time_from_tai (time_t *u, tai_t const *t)
+{
+ register uint64 uu = t->x - TAI_MAGIC ;
+#if SKALIBS_SIZEOFTIME < 8
+ if ((uu >> 32) && (uu >> 32) != 0xffffffffUL)
+ return (errno = EOVERFLOW, 0) ;
+#endif
+ *u = (time_t)uu ;
+ return 1 ;
+}