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| author | Serhiy Storchaka <storchaka@gmail.com> | 2017-02-02 16:54:45 +0200 |
|---|---|---|
| committer | Serhiy Storchaka <storchaka@gmail.com> | 2017-02-02 16:54:45 +0200 |
| commit | 4f4c038c0cd2a312cf9155e75f1be041b5085edd (patch) | |
| tree | 2ae4fb108f757546738276c119562844f0368e7b | |
| parent | a96910ecad21b69100cc9ee045839fecdbfcfa72 (diff) | |
| download | cpython-4f4c038c0cd2a312cf9155e75f1be041b5085edd.tar.gz | |
Issue #29421: Make int.to_bytes() and int.from_bytes() slightly faster
(10-20% for small integers).
| -rw-r--r-- | Objects/longobject.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/Objects/longobject.c b/Objects/longobject.c index f37fbd7222..0bf6cee6c1 100644 --- a/Objects/longobject.c +++ b/Objects/longobject.c @@ -22,6 +22,9 @@ class int "PyObject *" "&PyLong_Type" #define NSMALLNEGINTS 5 #endif +_Py_IDENTIFIER(little); +_Py_IDENTIFIER(big); + /* convert a PyLong of size 1, 0 or -1 to an sdigit */ #define MEDIUM_VALUE(x) (assert(-1 <= Py_SIZE(x) && Py_SIZE(x) <= 1), \ Py_SIZE(x) < 0 ? -(sdigit)(x)->ob_digit[0] : \ @@ -5198,9 +5201,9 @@ int_to_bytes_impl(PyObject *self, Py_ssize_t length, PyObject *byteorder, int little_endian; PyObject *bytes; - if (_PyUnicode_EqualToASCIIString(byteorder, "little")) + if (_PyUnicode_EqualToASCIIId(byteorder, &PyId_little)) little_endian = 1; - else if (_PyUnicode_EqualToASCIIString(byteorder, "big")) + else if (_PyUnicode_EqualToASCIIId(byteorder, &PyId_big)) little_endian = 0; else { PyErr_SetString(PyExc_ValueError, @@ -5258,9 +5261,9 @@ int_from_bytes_impl(PyTypeObject *type, PyObject *bytes_obj, int little_endian; PyObject *long_obj, *bytes; - if (_PyUnicode_EqualToASCIIString(byteorder, "little")) + if (_PyUnicode_EqualToASCIIId(byteorder, &PyId_little)) little_endian = 1; - else if (_PyUnicode_EqualToASCIIString(byteorder, "big")) + else if (_PyUnicode_EqualToASCIIId(byteorder, &PyId_big)) little_endian = 0; else { PyErr_SetString(PyExc_ValueError, |