fix: critical bug! use correct indexing formula

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---

Author: aayush0325

lib/node_modules/@stdlib/lapack/base/dlascl/lib/base.js

@@ -439,7 +439,7 @@ function scaleBanded( KL, KU, M, N, A, strideA1, strideA2, offsetA, isrm, mul )
 	k4 = KL + KU + M - 1;
 
 	if ( isrm ) {
-		idx = offsetA + ( ( KL + 1 ) * strideA1 );
+		idx = offsetA + ( ( KL + KU ) * strideA1 );
 		del = strideA2 - strideA1;
 
 		for ( i1 = 0; i1 < M; i1++ ) {

lib/node_modules/@stdlib/lapack/base/dlascl/test/fixtures/banded_row_major.json

@@ -4,21 +4,22 @@
   "M": 5,
   "N": 5,
   "KL": 2,
-  "KU": 1,
+  "KU": 2,
   "CFROM": 1.0,
   "CTO": 10.0,
   "A": [
     0.0, 0.0, 0.0, 0.0, 0.0,
     0.0, 0.0, 0.0, 0.0, 0.0,
+    0.0, 0.0, 9.8, 9.9, 10.0,
     0.0, 1.2, 2.3, 3.4, 4.5,
     1.1, 2.2, 3.3, 4.4, 5.5,
     2.1, 3.2, 4.3, 5.4, 0.0,
     3.1, 4.2, 5.3, 0.0, 0.0
   ],
   "A_mat": [
-    [ 1.1, 1.2, 0.0, 0.0, 0.0 ],
-    [ 2.1, 2.2, 2.3, 0.0, 0.0 ],
-    [ 3.1, 3.2, 3.3, 3.4, 0.0 ],
+    [ 1.1, 1.2, 9.8, 0.0, 0.0 ],
+    [ 2.1, 2.2, 2.3, 9.9, 0.0 ],
+    [ 3.1, 3.2, 3.3, 3.4, 10.0 ],
     [ 0.0, 4.2, 4.3, 4.4, 4.5 ],
     [ 0.0, 0.0, 5.3, 5.4, 5.5 ]
   ],
@@ -27,17 +28,18 @@
   "strideA2": 1,
   "offsetA": 0,
   "A_out": [
-    0.0, 0.0, 0.0, 0.0, 0.0,
-    0.0, 0.0, 0.0, 0.0, 0.0,
-    0.0, 12.0, 23.0, 34.0, 45.0,
+    0.0,  0.0,  0.0,  0.0,  0.0,
+    0.0,  0.0,  0.0,  0.0,  0.0,
+    0.0,  0.0,  98.0, 99.0, 100.0,
+    0.0,  12.0, 23.0, 34.0, 45.0,
     11.0, 22.0, 33.0, 44.0, 55.0,
     21.0, 32.0, 43.0, 54.0, 0.0,
-    31.0, 42.0, 53.0, 0.0, 0.0
+    31.0, 42.0, 53.0, 0.0,  0.0
   ],
   "A_out_mat": [
-    [ 11.0, 12.0,  0.0,  0.0,  0.0 ],
-    [ 21.0, 22.0, 23.0,  0.0,  0.0 ],
-    [ 31.0, 32.0, 33.0, 34.0,  0.0 ],
+    [ 11.0, 12.0, 98.0, 0.0,  0.0 ],
+    [ 21.0, 22.0, 23.0, 99.0, 0.0 ],
+    [ 31.0, 32.0, 33.0, 34.0, 100.0 ],
     [  0.0, 42.0, 43.0, 44.0, 45.0 ],
     [  0.0,  0.0, 53.0, 54.0, 55.0 ]
   ]