Fix function name and broken tests

Author: kgryte

lib/node_modules/@stdlib/math/base/ops/csub/benchmark/benchmark.js

@@ -27,7 +27,7 @@ var Complex128 = require( '@stdlib/complex/float64' );
 var real = require( '@stdlib/complex/real' );
 var imag = require( '@stdlib/complex/imag' );
 var pkg = require( './../package.json' ).name;
-var sub = require( './../lib' );
+var csub = require( './../lib' );
 
 
 // MAIN //
@@ -46,7 +46,7 @@ bench( pkg, function benchmark( b ) {
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
 		z = values[ i%values.length ];
-		out = sub( z, z );
+		out = csub( z, z );
 		if ( typeof out !== 'object' ) {
 			b.fail( 'should return an object' );
 		}

lib/node_modules/@stdlib/math/base/ops/csub/benchmark/julia/benchmark.jl

@@ -20,7 +20,7 @@ import BenchmarkTools
 using Printf
 
 # Benchmark variables:
-name = "subtract";
+name = "csub";
 repeats = 3;
 
 """

lib/node_modules/@stdlib/math/base/ops/csub/test/test.js

@@ -62,41 +62,41 @@ tape( 'if a real or imaginary component is `NaN`, the resulting component is `Na
 
 	v = csub( z1, z2 );
 	t.strictEqual( isnan( real( v ) ), true, 'returns expected value' );
-	t.strictEqual( imag( v ), 4.0, 'returns expected value' );
+	t.strictEqual( imag( v ), 2.0, 'returns expected value' );
 
 	z1 = new Complex128( 5.0, 3.0 );
 	z2 = new Complex128( NaN, 1.0 );
 
 	v = csub( z1, z2 );
 	t.strictEqual( isnan( real( v ) ), true, 'returns expected value' );
-	t.strictEqual( imag( v ), 4.0, 'returns expected value' );
+	t.strictEqual( imag( v ), 2.0, 'returns expected value' );
 
 	z1 = new Complex128( NaN, 3.0 );
 	z2 = new Complex128( NaN, 1.0 );
 
 	v = csub( z1, z2 );
 	t.strictEqual( isnan( real( v ) ), true, 'returns expected value' );
-	t.strictEqual( imag( v ), 4.0, 'returns expected value' );
+	t.strictEqual( imag( v ), 2.0, 'returns expected value' );
 
 	z1 = new Complex128( 5.0, NaN );
 	z2 = new Complex128( -2.0, 1.0 );
 
 	v = csub( z1, z2 );
-	t.strictEqual( real( v ), 3.0, 'returns expected value' );
+	t.strictEqual( real( v ), 7.0, 'returns expected value' );
 	t.strictEqual( isnan( imag( v ) ), true, 'returns expected value' );
 
 	z1 = new Complex128( 5.0, 3.0 );
 	z2 = new Complex128( -2.0, NaN );
 
 	v = csub( z1, z2 );
-	t.strictEqual( real( v ), 3.0, 'returns expected value' );
+	t.strictEqual( real( v ), 7.0, 'returns expected value' );
 	t.strictEqual( isnan( imag( v ) ), true, 'returns expected value' );
 
 	z1 = new Complex128( 5.0, NaN );
 	z2 = new Complex128( -2.0, NaN );
 
 	v = csub( z1, z2 );
-	t.strictEqual( real( v ), 3.0, 'returns expected value' );
+	t.strictEqual( real( v ), 7.0, 'returns expected value' );
 	t.strictEqual( isnan( imag( v ) ), true, 'returns expected value' );
 
 	z1 = new Complex128( NaN, NaN );