diff --git a/lib/node_modules/@stdlib/math/base/special/cos/test/test.js b/lib/node_modules/@stdlib/math/base/special/cos/test/test.js
index ec6d32c3fddd..b613f10bed05 100644
--- a/lib/node_modules/@stdlib/math/base/special/cos/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cos/test/test.js
@@ -214,3 +214,15 @@ tape( 'the function returns `NaN` if provided a `-infinity`', function test( t )
 	t.equal( isnan( v ), true, 'returns expected value' );
 	t.end();
 });
+
+tape( 'the function returns `1` if provided `+-0`', function test( t ) {
+	var v;
+
+	v = cos( -0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	v = cos( +0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	t.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/cos/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/cos/test/test.native.js
index 3645cb552be1..7a06d9d169fa 100644
--- a/lib/node_modules/@stdlib/math/base/special/cos/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/cos/test/test.native.js
@@ -223,3 +223,15 @@ tape( 'the function returns `NaN` if provided a `-infinity`', opts, function tes
 	t.equal( isnan( v ), true, 'returns expected value' );
 	t.end();
 });
+
+tape( 'the function returns `1` if provided `+-0`', opts, function test( t ) {
+	var v;
+
+	v = cos( -0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	v = cos( +0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	t.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js b/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js
index 36c24d82955a..f63191040994 100644
--- a/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js
@@ -116,9 +116,15 @@ tape( 'the function computes the hyperbolic cosine (large values)', function tes
 	t.end();
 });
 
-tape( 'the function returns `1` if provided `0`', function test( t ) {
-	var v = cosh( 0 );
+tape( 'the function returns `1` if provided `+-0`', function test( t ) {
+	var v;
+
+	v = cosh( -0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	v = cosh( +0.0 );
 	t.equal( v, 1.0, 'returns expected value' );
+
 	t.end();
 });
 
diff --git a/lib/node_modules/@stdlib/math/base/special/cosh/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/cosh/test/test.native.js
index 2b7bde73f193..338df86826b3 100644
--- a/lib/node_modules/@stdlib/math/base/special/cosh/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/cosh/test/test.native.js
@@ -125,9 +125,15 @@ tape( 'the function computes the hyperbolic cosine (large values)', opts, functi
 	t.end();
 });
 
-tape( 'the function returns `1` if provided `0`', opts, function test( t ) {
-	var v = cosh( 0 );
+tape( 'the function returns `1` if provided `+-0`', opts, function test( t ) {
+	var v;
+
+	v = cosh( -0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	v = cosh( +0.0 );
 	t.equal( v, 1.0, 'returns expected value' );
+
 	t.end();
 });
 
diff --git a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js
index 417fcfe65306..d6e19a44b720 100644
--- a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js
@@ -63,6 +63,18 @@ tape( 'if provided `NaN`, the function returns `NaN`', function test( t ) {
 	t.end();
 });
 
+tape( 'the function returns `1` if provided `+-0`', function test( t ) {
+	var y;
+
+	y = cospi( -0.0 );
+	t.equal( y, 1.0, 'returns expected value' );
+
+	y = cospi( +0.0 );
+	t.equal( y, 1.0, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'if provided an integer, the function returns `+-1.0`', function test( t ) {
 	var expected;
 	var x;
diff --git a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js
index 14800ccdee64..789b8e26af03 100644
--- a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js
@@ -72,6 +72,18 @@ tape( 'if provided `NaN`, the function returns `NaN`', opts, function test( t )
 	t.end();
 });
 
+tape( 'the function returns `1` if provided `+-0`', opts, function test( t ) {
+	var y;
+
+	y = cospi( -0.0 );
+	t.equal( y, 1.0, 'returns expected value' );
+
+	y = cospi( +0.0 );
+	t.equal( y, 1.0, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'if provided an integer, the function returns `+-1.0`', opts, function test( t ) {
 	var expected;
 	var x;
diff --git a/lib/node_modules/@stdlib/math/base/special/exp/test/test.js b/lib/node_modules/@stdlib/math/base/special/exp/test/test.js
index e2f244c55d54..3aaa064c30a3 100644
--- a/lib/node_modules/@stdlib/math/base/special/exp/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/exp/test/test.js
@@ -163,3 +163,15 @@ tape( 'the function returns `NaN` if provided a `NaN`', function test( t ) {
 	t.equal( isnan( val ), true, 'returns NaN' );
 	t.end();
 });
+
+tape( 'the function returns `1` if provided `+-0`', function test( t ) {
+	var val;
+
+	val = exp( -0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
+	val = exp( +0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
+	t.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/exp/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/exp/test/test.native.js
index d7231c3e21d7..424349b75e58 100644
--- a/lib/node_modules/@stdlib/math/base/special/exp/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/exp/test/test.native.js
@@ -172,3 +172,15 @@ tape( 'the function returns `NaN` if provided a `NaN`', opts, function test( t )
 	t.equal( isnan( val ), true, 'returns NaN' );
 	t.end();
 });
+
+tape( 'the function returns `1` if provided `+-0`', opts, function test( t ) {
+	var val;
+
+	val = exp( -0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
+	val = exp( +0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
+	t.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/exp10/test/test.js b/lib/node_modules/@stdlib/math/base/special/exp10/test/test.js
index b36345052fa3..0029bb34148e 100644
--- a/lib/node_modules/@stdlib/math/base/special/exp10/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/exp10/test/test.js
@@ -170,9 +170,15 @@ tape( 'the function returns `+infinity` if provided `+infinity`', function test(
 	t.end();
 });
 
-tape( 'the function returns `1` if provided `0`', function test( t ) {
-	var v = exp10( 0.0 );
-	t.equal( v, 1.0, 'equals 1' );
+tape( 'the function returns `1` if provided `+-0`', function test( t ) {
+	var val;
+
+	val = exp10( -0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
+	val = exp10( +0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
 	t.end();
 });
 
diff --git a/lib/node_modules/@stdlib/math/base/special/exp10/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/exp10/test/test.native.js
index 67a2ed7514ce..d0e72115c064 100644
--- a/lib/node_modules/@stdlib/math/base/special/exp10/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/exp10/test/test.native.js
@@ -179,9 +179,15 @@ tape( 'the function returns `+infinity` if provided `+infinity`', opts, function
 	t.end();
 });
 
-tape( 'the function returns `1` if provided `0`', opts, function test( t ) {
-	var v = exp10( 0.0 );
-	t.equal( v, 1.0, 'equals 1' );
+tape( 'the function returns `1` if provided `+-0`', opts, function test( t ) {
+	var val;
+
+	val = exp10( -0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
+	val = exp10( +0.0 );
+	t.equal( val, 1.0, 'returns expected value' );
+
 	t.end();
 });
 
diff --git a/lib/node_modules/@stdlib/math/base/special/exp2/test/test.js b/lib/node_modules/@stdlib/math/base/special/exp2/test/test.js
index 597a188fbb38..7d8c46ae6be4 100644
--- a/lib/node_modules/@stdlib/math/base/special/exp2/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/exp2/test/test.js
@@ -170,9 +170,15 @@ tape( 'the function returns `+infinity` if provided `+infinity`', function test(
 	t.end();
 });
 
-tape( 'the function returns `1` if provided `0`', function test( t ) {
-	var v = exp2( 0.0 );
-	t.equal( v, 1.0, 'equals 1' );
+tape( 'the function returns `1` if provided `+-0`', function test( t ) {
+	var v;
+
+	v = exp2( -0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	v = exp2( +0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
 	t.end();
 });
 
diff --git a/lib/node_modules/@stdlib/math/base/special/exp2/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/exp2/test/test.native.js
index 98b086e3e9c9..359b65859996 100644
--- a/lib/node_modules/@stdlib/math/base/special/exp2/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/exp2/test/test.native.js
@@ -179,9 +179,15 @@ tape( 'the function returns `+infinity` if provided `+infinity`', opts, function
 	t.end();
 });
 
-tape( 'the function returns `1` if provided `0`', opts, function test( t ) {
-	var v = exp2( 0.0 );
-	t.equal( v, 1.0, 'equals 1' );
+tape( 'the function returns `1` if provided `+-0`', opts, function test( t ) {
+	var v;
+
+	v = exp2( -0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
+	v = exp2( +0.0 );
+	t.equal( v, 1.0, 'returns expected value' );
+
 	t.end();
 });