test: add signed zero tests

---
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: passed
  - 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/blas/ext/base/ssum/test/test.ndarray.js

@@ -21,7 +21,7 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var Float32Array = require( '@stdlib/array/float32' );
 var ssum = require( './../lib/ndarray.js' );
 
@@ -57,7 +57,7 @@ tape( 'the function calculates the sum of all strided array elements', function
 
 	x = new Float32Array( [ NaN, 4.0 ] );
 	v = ssum( x.length, x, 1, 0 );
-	t.strictEqual( isnan( v ), true, 'returns expected value' );
+	t.strictEqual( isnanf( v ), true, 'returns expected value' );
 
 	x = new Float32Array( [ 1.0, 1.0e38, 1.0, -1.0e38 ] );
 	v = ssum( x.length, x, 1, 0 );

lib/node_modules/@stdlib/blas/ext/base/ssum/test/test.ndarray.native.js

@@ -22,7 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var Float32Array = require( '@stdlib/array/float32' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 
@@ -66,7 +66,7 @@ tape( 'the function calculates the sum of all strided array elements', opts, fun
 
 	x = new Float32Array( [ NaN, 4.0 ] );
 	v = ssum( x.length, x, 1, 0 );
-	t.strictEqual( isnan( v ), true, 'returns expected value' );
+	t.strictEqual( isnanf( v ), true, 'returns expected value' );
 
 	x = new Float32Array( [ 1.0, 1.0e38, 1.0, -1.0e38 ] );
 	v = ssum( x.length, x, 1, 0 );

lib/node_modules/@stdlib/blas/ext/base/ssum/test/test.ssum.js

@@ -21,7 +21,7 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var Float32Array = require( '@stdlib/array/float32' );
 var ssum = require( './../lib/ssum.js' );
 
@@ -57,7 +57,7 @@ tape( 'the function calculates the sum of all strided array elements', function
 
 	x = new Float32Array( [ NaN, 4.0 ] );
 	v = ssum( x.length, x, 1 );
-	t.strictEqual( isnan( v ), true, 'returns expected value' );
+	t.strictEqual( isnanf( v ), true, 'returns expected value' );
 
 	x = new Float32Array( [ 1.0, 1.0e38, 1.0, -1.0e38 ] );
 	v = ssum( x.length, x, 1 );

lib/node_modules/@stdlib/blas/ext/base/ssum/test/test.ssum.native.js

@@ -22,7 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var Float32Array = require( '@stdlib/array/float32' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 
@@ -148,7 +148,7 @@ tape( 'the function calculates the sum of all strided array elements', opts, fun
 
 	x = new Float32Array( [ NaN, 4.0 ] );
 	v = ssum( x.length, x, 1 );
-	t.strictEqual( isnan( v ), true, 'returns expected value' );
+	t.strictEqual( isnanf( v ), true, 'returns expected value' );
 
 	x = new Float32Array( [ 1.0, 1.0e38, 1.0, -1.0e38 ] );
 	v = ssum( x.length, x, 1 );