dpnp array container, init impl (#993)

* dpnp array container, init impl

* dpnp_ndarray funcs: __add__, __len__, __mod__, __radd__, __rmatmul__, __rmod__, __rmul__, __rtruediv__, __str__, __truediv__, itemsize, std, strides

* fix astype func

* fix argsort result shape for input with ndim==0

* fix partition function: in case ndim==0 pass to fallback

Author: Alexander-Makaryev

dpnp/__init__.py

@@ -40,7 +40,8 @@
 if "numpy" in sys.modules:
     warnings.warn("\nDPNP: Module NumPy found. Please load DPNP module before NumPy.\n")
 
-from dpnp.dparray import dparray as ndarray
+# from dpnp.dparray import dparray as ndarray
+from dpnp.dpnp_array import dpnp_array as ndarray
 from dpnp.dpnp_iface import *
 from dpnp.dpnp_iface import __all__ as _iface__all__
 from dpnp.dpnp_iface_types import *

dpnp/dpnp_algo/dpnp_algo_manipulation.pyx

@@ -148,7 +148,8 @@ cpdef utils.dpnp_descriptor dpnp_repeat(utils.dpnp_descriptor array1, repeats, a
 
 cpdef utils.dpnp_descriptor dpnp_reshape(utils.dpnp_descriptor array1, newshape, order=None):
     # return dpnp.get_dpnp_descriptor(dpctl.tensor.usm_ndarray(newshape, dtype=numpy.dtype(array1.dtype).name, buffer=array1.get_pyobj()))
-    return dpnp.get_dpnp_descriptor(dpctl.tensor.reshape(array1.get_pyobj(), newshape))
+    # return dpnp.get_dpnp_descriptor(dpctl.tensor.reshape(array1.get_pyobj(), newshape))
+    return dpnp.get_dpnp_descriptor(dpctl.tensor.reshape(array1.get_pyobj()._array_obj, newshape))
 
 
 cpdef utils.dpnp_descriptor dpnp_transpose(utils.dpnp_descriptor array1, axes=None):

dpnp/dpnp_algo/dpnp_algo_sorting.pyx

@@ -47,7 +47,10 @@ ctypedef void(*fptr_dpnp_searchsorted_t)(void * , const void * , const void * ,
 
 
 cpdef utils.dpnp_descriptor dpnp_argsort(utils.dpnp_descriptor x1):
-    return call_fptr_1in_1out(DPNP_FN_ARGSORT, x1, x1.shape)
+    cdef shape_type_c result_shape = x1.shape
+    if result_shape == ():
+        result_shape = (1,)
+    return call_fptr_1in_1out(DPNP_FN_ARGSORT, x1, result_shape)
 
 
 cpdef utils.dpnp_descriptor dpnp_partition(utils.dpnp_descriptor arr, int kth, axis=-1, kind='introselect', order=None):