feat: add boolean dtype support to ndarray/base/unary

PR-URL: #2587
Ref: #2547
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Jaysukh-409

lib/node_modules/@stdlib/ndarray/base/unary/README.md

@@ -177,6 +177,7 @@ Character codes for data types:
 
 <!-- charcodes -->
 
+-   **x**: `bool` (boolean).
 -   **c**: `complex64` (single-precision floating-point complex number).
 -   **z**: `complex128` (double-precision floating-point complex number).
 -   **f**: `float32` (single-precision floating-point number).
@@ -13086,6 +13087,97 @@ The function accepts the following arguments:
 int8_t stdlib_ndarray_u_z_as_z_z( struct ndarray *arrays[], void *fcn );
 ```
 
+#### stdlib_ndarray_x_x( \*arrays\[], \*fcn )
+
+Applies a unary callback to an input ndarray and assigns results to elements in an output ndarray.
+
+```c
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/ctor.h"
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+// Define the ndarray data types:
+enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_BOOL;
+enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_BOOL;
+
+// Create underlying byte arrays:
+uint8_t xbuf[] = { 0, 0, 0, 0 };
+uint8_t ybuf[] = { 0, 0, 0, 0 };
+
+// Define the number of dimensions:
+int64_t ndims = 2;
+
+// Define the array shapes:
+int64_t shape[] = { 2, 2 };
+
+// Define the strides:
+int64_t sx[] = { 2, 1 };
+int64_t sy[] = { 2, 1 };
+
+// Define the offsets:
+int64_t ox = 0;
+int64_t oy = 0;
+
+// Define the array order:
+enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
+
+// Specify the index mode:
+enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
+
+// Specify the subscript index modes:
+int8_t submodes[] = { imode };
+int64_t nsubmodes = 1;
+
+// Create an input ndarray:
+struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shape, sx, ox, order, imode, nsubmodes, submodes );
+if ( x == NULL ) {
+    fprintf( stderr, "Error allocating memory.\n" );
+    exit( EXIT_FAILURE );
+}
+
+// Create an output ndarray:
+struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, ndims, shape, sy, oy, order, imode, nsubmodes, submodes );
+if ( y == NULL ) {
+    fprintf( stderr, "Error allocating memory.\n" );
+    exit( EXIT_FAILURE );
+}
+
+// Create an array containing the ndarrays:
+struct ndarray *arrays[] = { x, y };
+
+// Define a callback:
+static bool fcn( const bool x ) {
+    return x;
+}
+
+// Apply the callback:
+int8_t status = stdlib_ndarray_x_x( arrays, (void *)fcn );
+if ( status != 0 ) {
+    fprintf( stderr, "Error during computation.\n" );
+    exit( EXIT_FAILURE );
+}
+
+// ...
+
+// Free allocated memory:
+stdlib_ndarray_free( x );
+stdlib_ndarray_free( y );
+```
+
+The function accepts the following arguments:
+
+-   **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.
+-   **fcn**: `[in] void*` a `bool (*f)(bool)` function to apply provided as a `void` pointer.
+
+```c
+int8_t stdlib_ndarray_x_x( struct ndarray *arrays[], void *fcn );
+```
+
 #### stdlib_ndarray_z_d_as_z_d( \*arrays\[], \*fcn )
 
 Applies a unary callback to an input ndarray and assigns results to elements in an output ndarray.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary.h

@@ -183,6 +183,8 @@
 #include "unary/u_z_as_u_z.h"
 #include "unary/u_z_as_z_z.h"
 
+#include "unary/x_x.h"
+
 #include "unary/z_d_as_z_d.h"
 #include "unary/z_z.h"
 // END LOOPS

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_b.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_b_as_u_u.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_c.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_c_as_b_c.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_c_as_c_c.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_c_as_z_z.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_d.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.

lib/node_modules/@stdlib/ndarray/base/unary/include/stdlib/ndarray/base/unary/b_d_as_b_d.h

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.