test: add tests for IEEE 754-2019 compliance

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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    status: passed
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    status: passed
---

Author: anandkaranubc

lib/node_modules/@stdlib/math/base/special/acos/test/test.js

@@ -140,3 +140,9 @@ tape( 'the function returns `NaN` if provided a value greater than `+1`', functi
 	}
 	t.end();
 });
+
+tape( 'the function returns `0` if provided `1`', function test( t ) {
+	var v = acos( 1.0 );
+	t.equal( v, 0.0, 'returns expected value' );
+	t.end();
+});

lib/node_modules/@stdlib/math/base/special/acos/test/test.native.js

@@ -149,3 +149,9 @@ tape( 'the function returns `NaN` if provided a value greater than `+1`', opts,
 	}
 	t.end();
 });
+
+tape( 'the function returns `0` if provided `1`', opts, function test( t ) {
+	var v = acos( 1.0 );
+	t.equal( v, 0.0, 'returns expected value' );
+	t.end();
+});

lib/node_modules/@stdlib/math/base/special/acosh/test/test.js

@@ -156,3 +156,9 @@ tape( 'the function returns `NaN` if provided value less than `1`', function tes
 	}
 	t.end();
 });
+
+tape( 'the function returns `0` if provided `1`', function test( t ) {
+	var v = acosh( 1.0 );
+	t.equal( v, 0.0, 'returns expected value' );
+	t.end();
+});

lib/node_modules/@stdlib/math/base/special/acosh/test/test.native.js

@@ -165,3 +165,9 @@ tape( 'the function returns `NaN` if provided value less than `1`', opts, functi
 	}
 	t.end();
 });
+
+tape( 'the function returns `0` if provided `1`', opts, function test( t ) {
+	var v = acosh( 1.0 );
+	t.equal( v, 0.0, 'returns expected value' );
+	t.end();
+});