bench: use string interpolation in blas/base/dtrmv

PR-URL: #10551
Ref: #8647
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Om-A-osc

lib/node_modules/@stdlib/blas/base/dtrmv/benchmark/benchmark.js

@@ -22,6 +22,7 @@
 
 var bench = require( '@stdlib/bench' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var format = require( '@stdlib/string/format' );
 var ones = require( '@stdlib/array/ones' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var floor = require( '@stdlib/math/base/special/floor' );
@@ -97,7 +98,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		N = floor( pow( pow( 10, i ), 1.0/2.0 ) );
 		f = createBenchmark( N );
-		bench( pkg+':size='+(N*N), f );
+		bench( format( '%s:size=%d', pkg, N*N ), f );
 	}
 }
 

lib/node_modules/@stdlib/blas/base/dtrmv/benchmark/benchmark.ndarray.js

@@ -22,6 +22,7 @@
 
 var bench = require( '@stdlib/bench' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var format = require( '@stdlib/string/format' );
 var ones = require( '@stdlib/array/ones' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var floor = require( '@stdlib/math/base/special/floor' );
@@ -97,7 +98,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		N = floor( pow( pow( 10, i ), 1.0/2.0 ) );
 		f = createBenchmark( N );
-		bench( pkg+':ndarray:size='+(N*N), f );
+		bench( format( '%s:ndarray:size=%d', pkg, N*N ), f );
 	}
 }