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-rw-r--r--Include/floatobject.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/Include/floatobject.h b/Include/floatobject.h
index 364b913..5b8d1a1 100644
--- a/Include/floatobject.h
+++ b/Include/floatobject.h
@@ -21,6 +21,12 @@ PyAPI_DATA(PyTypeObject) PyFloat_Type;
#define PyFloat_Check(op) PyObject_TypeCheck(op, &PyFloat_Type)
#define PyFloat_CheckExact(op) (Py_TYPE(op) == &PyFloat_Type)
+/* The str() precision PyFloat_STR_PRECISION is chosen so that in most cases,
+ the rounding noise created by various operations is suppressed, while
+ giving plenty of precision for practical use. */
+
+#define PyFloat_STR_PRECISION 12
+
#ifdef Py_NAN
#define Py_RETURN_NAN return PyFloat_FromDouble(Py_NAN)
#endif