feat: update C benchmarks

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

Author: aayush0325

lib/node_modules/@stdlib/math/base/special/exp2f/benchmark/c/benchmark.c

@@ -78,7 +78,7 @@ static double tic( void ) {
 *
 * @return random number
 */
-static double rand_float( void ) {
+static float rand_float( void ) {
 	int r = rand();
 	return (float)r / ( (float)RAND_MAX + 1.0f );
 }
@@ -91,12 +91,12 @@ static double rand_float( void ) {
 static double benchmark( void ) {
 	double elapsed;
 	float x[ 10 ];
-	double y;
 	double t;
+	float y;
 	int i;
 
 	for ( i = 0; i < 10; i++ ) {
-		x[ i ] = ( 240.0 * rand_float() ) - 120.0;
+		x[ i ] = ( 240.0f * rand_float() ) - 120.0f;
 	}
 	t = tic();
 	for ( i = 0; i < ITERATIONS; i++ ) {

lib/node_modules/@stdlib/math/base/special/exp2f/benchmark/c/native/benchmark.c

@@ -92,8 +92,8 @@ static float rand_float( void ) {
 static double benchmark( void ) {
 	double elapsed;
 	float x[ 10 ];
-	float y;
 	double t;
+	float y;
 	int i;
 
 	for ( i = 0; i < 10; i++ ) {