docs: add comment

---
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: na
  - 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: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/binary-input-casting-dtype/lib/main.js

@@ -73,6 +73,8 @@ function resolve( idtype1, idtype2, odtype, policy ) {
 		return dt;
 	}
 	if ( policy === 'accumulation' ) {
+		// When the accumulation policy is 'accumulation', we consider the input ndarray data type in isolation, irrespective of the output data type or the data types of additional input ndarrays...
+
 		// If an input data type is floating-point, allow accumulation in that data type as overflow/underflow is handled naturally as a built-in feature of that data type...
 		if ( isFloatingPointDataType( idtype1 ) || idtype1 === 'generic' ) { // NOTE: we may want to revisit this in the future for float16/complex32, where the value range is much more limited
 			return idtype1;