refactor: avoid repeatedly accessing the same element

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/gnansumors/lib/accessors.js

@@ -51,6 +51,7 @@ function gnansumors( N, x, strideX, offsetX ) {
 	var xget;
 	var sum;
 	var ix;
+	var v;
 	var i;
 
 	// Cache reference to array data:
@@ -61,15 +62,17 @@ function gnansumors( N, x, strideX, offsetX ) {
 
 	ix = offsetX;
 	if ( strideX === 0 ) {
-		if ( isnan( xget( xbuf, ix ) ) ) {
+		v = xget( xbuf, ix );
+		if ( isnan( v ) ) {
 			return 0.0;
 		}
-		return N * xget( xbuf, ix );
+		return N * v;
 	}
 	sum = 0.0;
 	for ( i = 0; i < N; i++ ) {
-		if ( isnan( xget( xbuf, ix ) ) === false ) {
-			sum += xget( xbuf, ix );
+		v = xget( xbuf, ix );
+		if ( isnan( v ) === false ) {
+			sum += v;
 		}
 		ix += strideX;
 	}