@@ -172,6 +172,7 @@ Character codes for data types:
172172
173173<!-- charcodes -->
174174
175+ - ** x** : ` bool ` (boolean).
175176- ** c** : ` complex64 ` (single-precision floating-point complex number).
176177- ** z** : ` complex128 ` (double-precision floating-point complex number).
177178- ** f** : ` float32 ` (single-precision floating-point number).
@@ -4503,6 +4504,90 @@ The function accepts the following arguments:
45034504int8_t stdlib_ndarray_assign_u_z( struct ndarray *arrays[] );
45044505```
45054506
4507+ #### stdlib_ndarray_assign_x_x( \* arrays\[ ] )
4508+
4509+ Assigns elements in an input ndarray to elements in an output ndarray.
4510+
4511+ ``` c
4512+ #include " stdlib/ndarray/dtypes.h"
4513+ #include " stdlib/ndarray/index_modes.h"
4514+ #include " stdlib/ndarray/orders.h"
4515+ #include " stdlib/ndarray/ctor.h"
4516+ #include < stdint.h>
4517+ #include < stdlib.h>
4518+ #include < stdio.h>
4519+
4520+ // Define the ndarray data types:
4521+ enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_BOOL;
4522+ enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_BOOL;
4523+
4524+ // Create underlying byte arrays:
4525+ uint8_t xbuf[] = { 0, 0, 0, 0 };
4526+ uint8_t ybuf[ ] = { 0, 0, 0, 0 };
4527+
4528+ // Define the number of dimensions:
4529+ int64_t ndims = 2;
4530+
4531+ // Define the array shapes:
4532+ int64_t shape[ ] = { 2, 2 };
4533+
4534+ // Define the strides:
4535+ int64_t sx[ ] = { 2, 1 };
4536+ int64_t sy[ ] = { 2, 1 };
4537+
4538+ // Define the offsets:
4539+ int64_t ox = 0;
4540+ int64_t oy = 0;
4541+
4542+ // Define the array order:
4543+ enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
4544+
4545+ // Specify the index mode:
4546+ enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
4547+
4548+ // Specify the subscript index modes:
4549+ int8_t submodes[ ] = { imode };
4550+ int64_t nsubmodes = 1;
4551+
4552+ // Create an input ndarray:
4553+ struct ndarray * x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shape, sx, ox, order, imode, nsubmodes, submodes );
4554+ if ( x == NULL ) {
4555+ fprintf( stderr, "Error allocating memory.\n" );
4556+ exit( EXIT_FAILURE );
4557+ }
4558+
4559+ // Create an output ndarray:
4560+ struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, ndims, shape, sy, oy, order, imode, nsubmodes, submodes );
4561+ if ( y == NULL ) {
4562+ fprintf ( stderr, "Error allocating memory.\n" );
4563+ exit( EXIT_FAILURE );
4564+ }
4565+
4566+ // Create an array containing the ndarrays:
4567+ struct ndarray *arrays[] = { x, y };
4568+
4569+ // Copy elements:
4570+ int8_t status = stdlib_ndarray_assign_x_x( arrays );
4571+ if ( status != 0 ) {
4572+ fprintf( stderr, "Error during computation.\n" );
4573+ exit( EXIT_FAILURE );
4574+ }
4575+
4576+ // ...
4577+
4578+ // Free allocated memory:
4579+ stdlib_ndarray_free ( x );
4580+ stdlib_ndarray_free( y );
4581+ ```
4582+
4583+ The function accepts the following arguments:
4584+
4585+ - **arrays**: `[inout] struct ndarray**` array whose first element is a pointer to an input ndarray and whose second element is a pointer to an output ndarray.
4586+
4587+ ```c
4588+ int8_t stdlib_ndarray_assign_x_x( struct ndarray *arrays[] );
4589+ ```
4590+
45064591#### stdlib_ndarray_assign_z_c( \* arrays\[ ] )
45074592
45084593Assigns elements in an input ndarray to elements in an output ndarray.
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