Issue #14478: Cache the hash of a Decimal in the C version.
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@ -60,6 +60,7 @@
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typedef struct {
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PyObject_HEAD
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Py_hash_t hash;
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mpd_t dec;
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mpd_uint_t data[_Py_DEC_MINALLOC];
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} PyDecObject;
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@ -1805,6 +1806,8 @@ PyDecType_New(PyTypeObject *type)
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return NULL;
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}
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dec->hash = -1;
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MPD(dec)->flags = MPD_STATIC|MPD_STATIC_DATA;
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MPD(dec)->exp = 0;
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MPD(dec)->digits = 0;
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@ -4210,7 +4213,7 @@ dec_floor(PyObject *self, PyObject *dummy UNUSED)
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/* Always uses the module context */
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static Py_hash_t
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dec_hash(PyObject *v)
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_dec_hash(PyDecObject *v)
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{
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#if defined(CONFIG_64) && _PyHASH_BITS == 61
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/* 2**61 - 1 */
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@ -4323,6 +4326,16 @@ malloc_error:
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goto finish;
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}
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static Py_hash_t
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dec_hash(PyDecObject *self)
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{
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if (self->hash == -1) {
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self->hash = _dec_hash(self);
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}
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return self->hash;
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}
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/* __reduce__ */
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static PyObject *
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dec_reduce(PyObject *self, PyObject *dummy UNUSED)
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