Replace TODO comments in the source code with view() method where applicable

Author: antonwolfy

dpnp/dpnp_utils/dpnp_utils_einsum.py

@@ -945,7 +945,6 @@ def _transpose_ex(a, axeses):
         stride = sum(a.strides[axis] for axis in axes)
         strides.append(stride)
 
-    # TODO: replace with a.view() when it is implemented in dpnp
     return dpnp_array(
         shape,
         dtype=a.dtype,
@@ -1151,8 +1150,7 @@ def dpnp_einsum(
             operands[idx] = operands[idx].sum(axis=sum_axes, dtype=result_dtype)
 
     if returns_view:
-        # TODO: replace with a.view() when it is implemented in dpnp
-        operands = [a for a in operands]
+        operands = [a.view() for a in operands]
     else:
         operands = [
             dpnp.astype(a, result_dtype, copy=False, casting=casting)

dpnp/linalg/dpnp_utils_linalg.py

@@ -1290,15 +1290,8 @@ def _nrm2_last_axis(x):
     """
 
     real_dtype = _real_type(x.dtype)
-    # TODO: use dpnp.sum(dpnp.square(dpnp.view(x)), axis=-1, dtype=real_dtype)
-    # w/a since dpnp.view() in not implemented yet
-    # Сalculate and sum the squares of both real and imaginary parts for
-    # compelex array.
-    if dpnp.issubdtype(x.dtype, dpnp.complexfloating):
-        y = dpnp.abs(x) ** 2
-    else:
-        y = dpnp.square(x)
-    return dpnp.sum(y, axis=-1, dtype=real_dtype)
+    x = dpnp.ascontiguousarray(x)
+    return dpnp.sum(dpnp.square(x.view(real_dtype)), axis=-1)
 
 
 def _real_type(dtype, device=None):