Issue #7117, continued: Change round implementation to use the correctly-rounded
string <-> float conversions; this makes sure that the result of the round
operation is correctly rounded, and hence displays nicely using the new float
repr.
diff --git a/Include/floatobject.h b/Include/floatobject.h
index 6c11036..54e8825 100644
--- a/Include/floatobject.h
+++ b/Include/floatobject.h
@@ -127,6 +127,13 @@
char *format_spec,
Py_ssize_t format_spec_len);
+/* Round a C double x to the closest multiple of 10**-ndigits. Returns a
+ Python float on success, or NULL (with an appropriate exception set) on
+ failure. Used in builtin_round in bltinmodule.c. */
+PyAPI_FUNC(PyObject *) _Py_double_round(double x, int ndigits);
+
+
+
#ifdef __cplusplus
}
#endif