Switching shape_elem_type to ssize_t (#1096)

* Switching shape_elem_type to ssize_t

* updating after merge of master

* define ssize_t for MSVC

Author: Alexander-Makaryev

dpnp/backend/include/dpnp_iface.hpp

@@ -48,7 +48,12 @@
 #define INP_DLLEXPORT
 #endif
 
-typedef long shape_elem_type;
+#if defined(_MSC_VER)
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+#endif
+
+typedef ssize_t shape_elem_type;
 
 #include "dpnp_iface_fft.hpp"
 #include "dpnp_iface_random.hpp"

dpnp/dpnp_algo/__init__.pxd

@@ -27,7 +27,7 @@
 
 from libcpp.vector cimport vector
 
-ctypedef long shape_elem_type
+ctypedef ssize_t shape_elem_type
 ctypedef vector.vector[shape_elem_type] shape_type_c
 
 from dpnp.dpnp_algo.dpnp_algo cimport *

dpnp/dpnp_algo/dpnp_algo_statistics.pyx

@@ -423,7 +423,7 @@ cpdef utils.dpnp_descriptor dpnp_nanvar(utils.dpnp_descriptor arr, ddof):
     # dpnp_isnan does not support USM array as input in comparison to dpnp.isnan
     cdef utils.dpnp_descriptor mask_arr = dpnp.get_dpnp_descriptor(dpnp.isnan(arr.get_pyobj()))
     n = dpnp.count_nonzero(mask_arr.get_pyobj())
-    res_size = arr.size - n
+    res_size = int(arr.size - n)
     cdef DPNPFuncType param1_type = dpnp_dtype_to_DPNPFuncType(arr.dtype)
 
     cdef DPNPFuncData kernel_data = get_dpnp_function_ptr(DPNP_FN_NANVAR, param1_type, param1_type)