fix: handle mostly safe casts and refactor loop generation

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: passed
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/unary/scripts/lib/callback_body.js

@@ -0,0 +1,46 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var isComplexChar = require( '@stdlib/ndarray/base/assert/is-complex-floating-point-data-type-char' );
+
+
+// MAIN //
+
+/**
+* Returns a callback body based on callback input and output data types.
+*
+* @private
+* @param {string} ch1 - one-letter character abbreviation for input argument
+* @param {string} ch2 - one-letter character abbreviation for output value
+* @returns {string} callback body
+*/
+function callbackBody( ch1, ch2 ) {
+	if ( isComplexChar( ch1 ) || isComplexChar( ch2 ) || ch1 !== ch2 ) {
+		return '// ...';
+	}
+	return 'return x;';
+}
+
+
+// EXPORTS //
+
+module.exports = callbackBody;

lib/node_modules/@stdlib/ndarray/base/unary/scripts/lib/create_header_files.js

@@ -0,0 +1,102 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var path = require( 'path' );
+var logger = require( 'debug' );
+var readFile = require( '@stdlib/fs/read-file' ).sync;
+var writeFile = require( '@stdlib/fs/write-file' ).sync;
+var uppercase = require( '@stdlib/string/uppercase' );
+var currentYear = require( '@stdlib/time/current-year' );
+var replace = require( '@stdlib/string/replace' );
+var format = require( '@stdlib/string/format' );
+
+
+// VARIABLES //
+
+var FOPTS = {
+	'encoding': 'utf8'
+};
+
+// Logger:
+var debug = logger( 'script:ndarray-unary-loops:create-header-files' );
+
+// Templates:
+var TMPL_HEADER = readFile( path.resolve( __dirname, '..', 'templates', 'header.txt' ), FOPTS );
+
+// Output directory:
+var INCLUDE_DIR = path.resolve( __dirname, '..', '..', 'include', 'stdlib', 'ndarray', 'base', 'unary' );
+
+// Get the current year:
+var CURRENT_YEAR = currentYear().toString();
+
+// Specify the copyright holder:
+var COPYRIGHT = 'The Stdlib Authors';
+
+
+// FUNCTIONS //
+
+/**
+* Creates a header file for a provided loop signature.
+*
+* @private
+* @param {string} signature - loop signature
+* @throws {Error} unexpected error
+*/
+function createHeaderFile( signature ) {
+	var fpath;
+	var file;
+	var err;
+
+	file = replace( TMPL_HEADER, '{{YEAR}}', CURRENT_YEAR );
+	file = replace( file, '{{COPYRIGHT}}', COPYRIGHT );
+	file = replace( file, '{{INCLUDE_GUARD}}', uppercase( signature ) );
+	file = replace( file, '{{SIGNATURE}}', signature );
+
+	fpath = path.join( INCLUDE_DIR, format( '%s.h', signature ) );
+
+	debug( 'Creating header file: %s', fpath );
+	err = writeFile( fpath, file, FOPTS );
+	if ( err ) {
+		throw err;
+	}
+}
+
+
+// MAIN //
+
+/**
+* Creates header files for a list of loop signatures.
+*
+* @private
+* @param {Array<string>} signatures - list of loop signatures
+*/
+function createHeaderFiles( signatures ) {
+	var i;
+	for ( i = 0; i < signatures.length; i++ ) {
+		createHeaderFile( signatures[ i ] );
+	}
+}
+
+
+// EXPORTS //
+
+module.exports = createHeaderFiles;