1 files changed, 28 insertions, 0 deletions
diff --git a/Modules/_time.c b/Modules/_time.c
new file mode 100644
index 0000000..9b63c20
--- /dev/null
+++ b/Modules/_time.c
@@ -0,0 +1,28 @@
+#include "Python.h"
+#include "_time.h"
+
+/* Exposed in timefuncs.h. */
+time_t
+_PyTime_DoubleToTimet(double x)
+{
+    time_t result;
+    double diff;
+
+    result = (time_t)x;
+    /* How much info did we lose?  time_t may be an integral or
+     * floating type, and we don't know which.  If it's integral,
+     * we don't know whether C truncates, rounds, returns the floor,
+     * etc.  If we lost a second or more, the C rounding is
+     * unreasonable, or the input just doesn't fit in a time_t;
+     * call it an error regardless.  Note that the original cast to
+     * time_t can cause a C error too, but nothing we can do to
+     * worm around that.
+     */
+    diff = x - (double)result;
+    if (diff <= -1.0 || diff >= 1.0) {
+        PyErr_SetString(PyExc_ValueError,
+                        "timestamp out of range for platform time_t");
+        result = (time_t)-1;
+    }
+    return result;
+}