test: add tests for IEEE 754-2019 compliance

PR-URL: stdlib-js#6564
Ref: stdlib-js#365
Reviewed-by: Athan Reines <[email protected]>

Author: anandkaranubc

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

@@ -24,6 +24,7 @@ var tape = require( 'tape' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var randu = require( '@stdlib/random/base/randu' );
 var EPS = require( '@stdlib/constants/float64/eps' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
 var abs = require( '@stdlib/math/base/special/abs' );
 var acosh = require( './../lib' );
 
@@ -156,3 +157,9 @@ tape( 'the function returns `NaN` if provided value less than `1`', function tes
 	}
 	t.end();
 });
+
+tape( 'the function returns `+infinity` if provided `+infinity`', function test( t ) {
+	var v = acosh( PINF );
+	t.equal( v, PINF, 'returns expected value' );
+	t.end();
+});

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

@@ -24,6 +24,7 @@ var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var randu = require( '@stdlib/random/base/randu' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var abs = require( '@stdlib/math/base/special/abs' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -165,3 +166,9 @@ tape( 'the function returns `NaN` if provided value less than `1`', opts, functi
 	}
 	t.end();
 });
+
+tape( 'the function returns `+infinity` if provided `+infinity`', opts, function test( t ) {
+	var v = acosh( PINF );
+	t.equal( v, PINF, 'returns expected value' );
+	t.end();
+});