1 files changed, 4 insertions, 0 deletions
diff --git a/time.c b/time.c
index c35c9a15f4..08f4eb8282 100644
--- a/time.c
+++ b/time.c
@@ -201,6 +201,10 @@ time_timespec(VALUE num, int interval)
 	    double f, d;
 
 	    d = modf(RFLOAT_VALUE(num), &f);
+            if (d < 0) {
+                d += 1;
+                f -= 1;
+            }
 	    t.tv_sec = (time_t)f;
 	    if (f != t.tv_sec) {
 		rb_raise(rb_eRangeError, "%f out of Time range", RFLOAT_VALUE(num));