bench: use uniform and discreteUniform following code conventions

---
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
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    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: passed
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    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
---

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type: pre_push_report
description: Results of running various checks prior to pushing changes.
report:
  - task: run_javascript_examples
    status: na
  - task: run_c_examples
    status: na
  - task: run_cpp_examples
    status: na
  - task: run_javascript_readme_examples
    status: na
  - task: run_c_benchmarks
    status: na
  - task: run_cpp_benchmarks
    status: na
  - task: run_fortran_benchmarks
    status: na
  - task: run_javascript_benchmarks
    status: passed
  - task: run_julia_benchmarks
    status: na
  - task: run_python_benchmarks
    status: na
  - task: run_r_benchmarks
    status: na
  - task: run_javascript_tests
    status: na
---

Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/negative-binomial/mgf/benchmark/benchmark.js

@@ -23,9 +23,8 @@
 var bench = require( '@stdlib/bench' );
 var Float64Array = require( '@stdlib/array/float64' );
 var ln = require( '@stdlib/math/base/special/ln' );
-var ceil = require( '@stdlib/math/base/special/ceil' );
-var randu = require( '@stdlib/random/base/randu' );
 var uniform = require( '@stdlib/random/base/uniform' );
+var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var pkg = require( './../package.json' ).name;
@@ -48,8 +47,8 @@ bench( pkg, function benchmark( b ) {
 	p = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
 		p[ i ] = uniform( EPS, 1.0 );
-		t[ i ] = randu() * -ln( p[ i ] );
-		r[ i ] = ceil( randu()*100.0 );
+		t[ i ] = uniform( 0.0, -ln( p[ i ] ) );
+		r[ i ] = discreteUniform( 1, 100 );
 	}
 
 	b.tic();
@@ -82,7 +81,7 @@ bench( pkg+':factory', function benchmark( b ) {
 	len = 100;
 	t = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
-		t[ i ] = randu() * -ln( p );
+		t[ i ] = uniform( 0.0, -ln( p ) );
 	}
 
 	b.tic();

lib/node_modules/@stdlib/stats/base/dists/negative-binomial/mgf/benchmark/benchmark.native.js

@@ -23,9 +23,8 @@
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
 var Float64Array = require( '@stdlib/array/float64' );
-var randu = require( '@stdlib/random/base/randu' );
 var uniform = require( '@stdlib/random/base/uniform' );
-var ceil = require( '@stdlib/math/base/special/ceil' );
+var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
 var ln = require( '@stdlib/math/base/special/ln' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -57,8 +56,8 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	p = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
 		p[ i ] = uniform( EPS, 1.0 );
-		t[ i ] = randu() * -ln( p[ i ] );
-		r[ i ] = ceil( randu()*100.0 );
+		t[ i ] = uniform( 0.0, -ln( p[ i ] ) );
+		r[ i ] = discreteUniform( 1, 100 );
 	}
 
 	b.tic();