bench: fix types

---
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: na
  - 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: passed
  - 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/stats/base/ndarray/smax/benchmark/c/benchmark.length.c

@@ -100,7 +100,7 @@ static float rand_float( void ) {
 * @param len          array length
 * @return             elapsed time in seconds
 */
-static float benchmark( int iterations, int len ) {
+static double benchmark( int iterations, int len ) {
 	enum STDLIB_NDARRAY_INDEX_MODE imode;
 	const struct ndarray *arrays[ 1 ];
 	enum STDLIB_NDARRAY_ORDER order;
@@ -110,7 +110,7 @@ static float benchmark( int iterations, int len ) {
 	int64_t nsubmodes;
 	struct ndarray *x;
 	int64_t offset;
-	float elapsed;
+	double elapsed;
 	int64_t ndims;
 	float *data;
 	float v;