finfo support based on numpy/#29763

Author: SwayamInSync

quaddtype/numpy_quaddtype/src/dtype.c

@@ -176,6 +176,28 @@ quadprec_default_descr(PyArray_DTypeMeta *cls)
     return (PyArray_Descr *)temp;
 }
 
+static PyObject *
+quad_finfo(PyArray_Descr *descr)
+{
+    
+    PyObject *finfo_dict = PyDict_New();
+    if (!finfo_dict) return NULL;
+    
+    PyDict_SetItemString(finfo_dict, "precision", PyLong_FromLong(34));
+    PyDict_SetItemString(finfo_dict, "bits", PyLong_FromLong(128));
+    
+    PyDict_SetItemString(finfo_dict, "eps", PyLong_FromLong(34));
+
+    PyDict_SetItemString(finfo_dict, "max", PyLong_FromLong(34));
+
+    PyDict_SetItemString(finfo_dict, "tiny", PyLong_FromLong(34));
+
+    PyDict_SetItemString(finfo_dict, "epsneg", PyLong_FromLong(34));
+    PyDict_SetItemString(finfo_dict, "resolution", PyLong_FromLong(34));
+
+    return finfo_dict; 
+}
+
 static PyType_Slot QuadPrecDType_Slots[] = {
         {NPY_DT_ensure_canonical, &ensure_canonical},
         {NPY_DT_common_instance, &common_instance},
@@ -185,6 +207,7 @@ static PyType_Slot QuadPrecDType_Slots[] = {
         {NPY_DT_getitem, &quadprec_getitem},
         {NPY_DT_default_descr, &quadprec_default_descr},
         {NPY_DT_PyArray_ArrFuncs_dotfunc, NULL},
+        {NPY_DT_get_finfo, &quad_finfo},
         {0, NULL}};
 
 static PyObject *

quaddtype/numpy_quaddtype/src/scalar.c

@@ -239,7 +239,7 @@ QuadPrecision_dealloc(QuadPrecisionObject *self)
 }
 
 PyTypeObject QuadPrecision_Type = {
-        PyVarObject_HEAD_INIT(NULL, 0).tp_name = "numpy_quaddtype.QuadPrecision",
+        PyVarObject_HEAD_INIT(NULL, 0).tp_name = "numpy_quaddtype.QuadPrecDType",
         .tp_basicsize = sizeof(QuadPrecisionObject),
         .tp_itemsize = 0,
         .tp_new = QuadPrecision_new,
@@ -253,5 +253,6 @@ PyTypeObject QuadPrecision_Type = {
 int
 init_quadprecision_scalar(void)
 {
+    QuadPrecision_Type.tp_base = &PyFloatingArrType_Type;
     return PyType_Ready(&QuadPrecision_Type);
 }