mat: fix dst matrix shape check in QR.RTo

tvkn · kortschak · commit f1a62e187e27 · 2024-08-17T06:04:00.000+09:30
Fixed a typo in row/column size check, the
expected row size was incorrectly checked against
the column size.
diff --git a/mat/qr.go b/mat/qr.go
@@ -149,7 +149,7 @@ func (qr *QR) RTo(dst *Dense) {
 		dst.ReuseAs(r, c)
 	} else {
 		r2, c2 := dst.Dims()
-		if c != r2 || c != c2 {
+		if r != r2 || c != c2 {
 			panic(ErrShape)
 		}
 	}
