bench: align C benchmark with stdlib conventions

Co-authored-by: Claude <noreply@anthropic.com>

---
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_pkg_readmes
    status: na
  - task: lint_markdown_docs
    status: na
  - 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: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/erlang/logpdf/benchmark/c/benchmark.c

@@ -25,7 +25,7 @@
 #include <time.h>
 #include <sys/time.h>
 
-#define NAME "logpdf"
+#define NAME "erlang-logpdf"
 #define ITERATIONS 1000000
 #define REPEATS 3
 
@@ -44,7 +44,7 @@ static void print_version( void ) {
 */
 static void print_summary( int total, int passing ) {
 	printf( "#\n" );
-	printf( "1..%d\n", total );
+	printf( "1..%d\n", total ); // TAP plan
 	printf( "# total %d\n", total );
 	printf( "# pass  %d\n", passing );
 	printf( "#\n" );
@@ -54,15 +54,14 @@ static void print_summary( int total, int passing ) {
 /**
 * Prints benchmarks results.
 *
-* @param iterations  number of iterations
-* @param elapsed     elapsed time in seconds
+* @param elapsed   elapsed time in seconds
 */
-static void print_results( int iterations, double elapsed ) {
-	double rate = (double)iterations / elapsed;
+static void print_results( double elapsed ) {
+	double rate = (double)ITERATIONS / elapsed;
 	printf( "  ---\n" );
-	printf( "  iterations: %d\n", iterations );
-	printf( "  elapsed: %g\n", elapsed );
-	printf( "  rate: %g\n", rate );
+	printf( "  iterations: %d\n", ITERATIONS );
+	printf( "  elapsed: %0.9f\n", elapsed );
+	printf( "  rate: %0.9f\n", rate );
 	printf( "  ...\n" );
 }
 
@@ -131,16 +130,15 @@ int main( void ) {
 	double elapsed;
 	int i;
 
-	// Initialize the pseudorandom number generator:
+	// Use the current time to seed the random number generator:
 	srand( time( NULL ) );
 
 	print_version();
 	for ( i = 0; i < REPEATS; i++ ) {
 		printf( "# c::%s\n", NAME );
 		elapsed = benchmark();
-		print_results( ITERATIONS, elapsed );
-		printf( "ok %d benchmark finished\n", i + 1 );
+		print_results( elapsed );
+		printf( "ok %d benchmark finished\n", i+1 );
 	}
 	print_summary( REPEATS, REPEATS );
-	return 0;
 }