diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index faa02f2..9f50140 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -862,27 +862,7 @@
 float___trunc___impl(PyObject *self)
 /*[clinic end generated code: output=dd3e289dd4c6b538 input=591b9ba0d650fdff]*/
 {
-    double x = PyFloat_AsDouble(self);
-    double wholepart;           /* integral portion of x, rounded toward 0 */
-
-    (void)modf(x, &wholepart);
-    /* Try to get out cheap if this fits in a Python int.  The attempt
-     * to cast to long must be protected, as C doesn't define what
-     * happens if the double is too big to fit in a long.  Some rare
-     * systems raise an exception then (RISCOS was mentioned as one,
-     * and someone using a non-default option on Sun also bumped into
-     * that).  Note that checking for >= and <= LONG_{MIN,MAX} would
-     * still be vulnerable:  if a long has more bits of precision than
-     * a double, casting MIN/MAX to double may yield an approximation,
-     * and if that's rounded up, then, e.g., wholepart=LONG_MAX+1 would
-     * yield true from the C expression wholepart<=LONG_MAX, despite
-     * that wholepart is actually greater than LONG_MAX.
-     */
-    if (LONG_MIN < wholepart && wholepart < LONG_MAX) {
-        const long aslong = (long)wholepart;
-        return PyLong_FromLong(aslong);
-    }
-    return PyLong_FromDouble(wholepart);
+    return PyLong_FromDouble(PyFloat_AS_DOUBLE(self));
 }
 
 /*[clinic input]