1 files changed, 23 insertions, 0 deletions
diff --git a/src/libstddjb/localtm_from_ltm64.c b/src/libstddjb/localtm_from_ltm64.c
new file mode 100644
index 0000000..63c5aac
--- /dev/null
+++ b/src/libstddjb/localtm_from_ltm64.c
@@ -0,0 +1,23 @@
+/* ISC license. */
+
+/* OpenBSD needs that for EOVERFLOW. wtfbsdseriously */
+#define _BSD_SOURCE
+
+#include <sys/types.h>
+#include <errno.h>
+#include <time.h>
+#include <skalibs/uint64.h>
+#include <skalibs/tai.h>
+#include <skalibs/djbtime.h>
+
+int localtm_from_ltm64 (struct tm *l, uint64 uu, int tz)
+{
+  if (uu < TAI_MAGIC) return (errno = EINVAL, 0) ;
+  uu -= TAI_MAGIC ;
+  if (uu > 0xFFFFFFFFUL) return (errno = EOVERFLOW, 0) ;
+  {
+    time_t u = (time_t)uu ;
+    if (tz ? !localtime_r(&u, l) : !gmtime_r(&u, l)) return 0 ;
+  }
+  return 1 ;
+}