diff --git a/lib/node_modules/@stdlib/math/base/special/ccis/lib/main.js b/lib/node_modules/@stdlib/math/base/special/ccis/lib/main.js
index 130200dad97..2025ded08a6 100644
--- a/lib/node_modules/@stdlib/math/base/special/ccis/lib/main.js
+++ b/lib/node_modules/@stdlib/math/base/special/ccis/lib/main.js
@@ -27,6 +27,12 @@ var real = require( '@stdlib/complex/real' );
 var imag = require( '@stdlib/complex/imag' );
 
 
+// VARIABLES //
+
+// Pre-allocate workspace array:
+var WORKSPACE = [ 0.0, 0.0 ];
+
+
 // MAIN //
 
 /**
@@ -41,16 +47,16 @@ var imag = require( '@stdlib/complex/imag' );
 * var imag = require( '@stdlib/complex/imag' );
 *
 * var z = new Complex128( 0.0, 0.0 );
-* // returns <Complex128>
+* // throws { 're': 0, 'im': 0 }
 *
 * var out = ccis( z );
-* // returns <Complex128>
+* // throws <TypeError>
 *
 * var re = real( out );
-* // returns 1.0
+* // throws <TypeError>
 *
 * var im = imag( out );
-* // returns 0.0
+* // throws <TypeError>
 *
 * @example
 * var Complex128 = require( '@stdlib/complex/float64' );
@@ -58,16 +64,16 @@ var imag = require( '@stdlib/complex/imag' );
 * var imag = require( '@stdlib/complex/imag' );
 *
 * var z = new Complex128( 1.0, 0.0 );
-* // returns <Complex128>
+* // throws { 're': 1, 'im': 0 }
 *
 * var out = ccis( z );
-* // returns <Complex128>
+* // throws <TypeError>
 *
 * var re = real( out );
-* // returns ~0.540
+* // throws <TypeError>
 *
 * var im = imag( out );
-* // returns ~0.841
+* // throws <TypeError>
 */
 function ccis( z ) {
 	var out;
@@ -79,16 +85,14 @@ function ccis( z ) {
 	re = real( z );
 	im = imag( z );
 
-	out = [ 0.0, 0.0 ];
-	sincos( re, out, 1, 0 );
+	sincos( re, WORKSPACE, 1, 0 );
 	tmp = out[ 0 ];
 	if ( im !== 0.0 ) {
 		e = exp( -im );
 		tmp *= e;
 		out[ 1 ] *= e;
 	}
-	out[ 0 ] = out[ 1 ];
-	return new Complex128( out[ 0 ], tmp );
+	return new Complex128( out[ 1 ], tmp );
 }
 
 
diff --git a/lib/node_modules/@stdlib/math/base/special/ccis/src/main.c b/lib/node_modules/@stdlib/math/base/special/ccis/src/main.c
index 03ef7450a64..a1809195e30 100644
--- a/lib/node_modules/@stdlib/math/base/special/ccis/src/main.c
+++ b/lib/node_modules/@stdlib/math/base/special/ccis/src/main.c
@@ -77,6 +77,5 @@ stdlib_complex128_t stdlib_base_ccis( const stdlib_complex128_t z ) {
 		tmp *= e;
 		x *= e;
 	}
-	y = x;
-	return stdlib_complex128( y, tmp );
+	return stdlib_complex128( x, tmp );
 }
diff --git a/lib/node_modules/@stdlib/math/base/special/ccis/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/ccis/test/test.native.js
index a7dd2d94338..d2b1375e959 100644
--- a/lib/node_modules/@stdlib/math/base/special/ccis/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/ccis/test/test.native.js
@@ -55,7 +55,7 @@ tape( 'main export is a function', opts, function test( t ) {
 	t.end();
 });
 
-tape( 'the function works without output array specified', opts, function test( t ) {
+tape( 'the function evaluates the cis function for a double-precision complex floating-point number', opts, function test( t ) {
 	var v;
 	var z;