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-rw-r--r--src/libstddjb/tain_to_millisecs.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/libstddjb/tain_to_millisecs.c b/src/libstddjb/tain_to_millisecs.c
new file mode 100644
index 0000000..0fa9395
--- /dev/null
+++ b/src/libstddjb/tain_to_millisecs.c
@@ -0,0 +1,11 @@
+/* ISC license. */
+
+#include <skalibs/uint64.h>
+#include <skalibs/tai.h>
+
+int tain_to_millisecs (tain_t const *a)
+{
+ if (a->sec.x > (uint64)2147483) return -1 ;
+ if ((a->sec.x == (uint64)2147483) && (a->nano > 646000000U)) return -1 ;
+ return a->sec.x * 1000 + (a->nano + 999999) / 1000000U ;
+}