1 files changed, 18 insertions, 0 deletions
diff --git a/src/libstddjb/timeval_from_tai_relative.c b/src/libstddjb/timeval_from_tai_relative.c
new file mode 100644
index 0000000..94bd3f7
--- /dev/null
+++ b/src/libstddjb/timeval_from_tai_relative.c
@@ -0,0 +1,18 @@
+/* ISC license. */
+
+#include <sys/time.h>
+#include <errno.h>
+#include <skalibs/sysdeps.h>
+#include <skalibs/uint64.h>
+#include <skalibs/tai.h>
+
+int timeval_from_tai_relative (struct timeval *tv, tai_t const *t)
+{
+  if (tai_sec(t) >= (uint64)1 << 63) return (errno = EINVAL, 0) ;
+#if SKALIBS_SIZEOFTIME < 8
+  if (tai_sec(t) > 0xffffffffU) return (errno = ERANGE, 0) ;
+#endif
+  tv->tv_sec = (time_t)tai_sec(t) ;
+  tv->tv_usec = 0 ;
+  return 1 ;
+}