diff --git a/lib/node_modules/@stdlib/blas/base/dsymv/lib/dsymv.js b/lib/node_modules/@stdlib/blas/base/dsymv/lib/dsymv.js
index 7795b9005465..8e76a5a4eec5 100644
--- a/lib/node_modules/@stdlib/blas/base/dsymv/lib/dsymv.js
+++ b/lib/node_modules/@stdlib/blas/base/dsymv/lib/dsymv.js
@@ -24,7 +24,7 @@ var dfill = require( '@stdlib/blas/ext/base/dfill' );
 var dscal = require( '@stdlib/blas/base/dscal' );
 var max = require( '@stdlib/math/base/special/max' );
 var isLayout = require( '@stdlib/blas/base/assert/is-layout' );
-var isMatrixTriangle = require( '@stdlib/blas/base/assert/is-matrix-triangle' );
+var resolveStr = require( '@stdlib/blas/base/matrix-triangle-resolve-str' );
 var isRowMajor = require( '@stdlib/ndarray/base/assert/is-row-major-string' );
 var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string' );
 
@@ -35,7 +35,7 @@ var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string
 * Performs the matrix-vector operation `y = alpha*A*x + beta*y` where `alpha` and `beta` are scalars, `x` and `y` are `N` element vectors, and `A` is an `N` by `N` symmetric matrix.
 *
 * @param {string} order - storage layout
-* @param {string} uplo - specifies whether the upper or lower triangular part of the symmetric matrix `A` should be referenced
+* @param {(integer|string)} uplo - specifies whether the upper or lower triangular part of the symmetric matrix `A` should be referenced
 * @param {NonNegativeInteger} N - number of elements along each dimension of `A`
 * @param {number} alpha - scalar constant
 * @param {Float64Array} A - matrix
@@ -78,11 +78,13 @@ function dsymv( order, uplo, N, alpha, A, LDA, x, strideX, beta, y, strideY ) {
 	var i;
 	var j;
 	var k;
+	var u;
 
 	if ( !isLayout( order ) ) {
 		throw new TypeError( 'invalid argument. First argument must be a valid order. Value: `%s`.', order );
 	}
-	if ( !isMatrixTriangle( uplo ) ) {
+	u = resolveStr( uplo );
+	if ( u === null ) {
 		throw new TypeError( 'invalid argument. Second argument must specify whether to reference the lower or upper triangular matrix. Value: `%s`.', uplo );
 	}
 	if ( N < 0 ) {
@@ -128,8 +130,8 @@ function dsymv( order, uplo, N, alpha, A, LDA, x, strideX, beta, y, strideY ) {
 	}
 	// Form: y = alpha*A*x + y
 	if (
-		( isRowMajor( order ) && uplo === 'upper' ) ||
-		( isColumnMajor( order ) && uplo === 'lower' )
+		( isRowMajor( order ) && u === 'upper' ) ||
+		( isColumnMajor( order ) && u === 'lower' )
 	) {
 		ix = ox;
 		iy = oy;
@@ -154,7 +156,7 @@ function dsymv( order, uplo, N, alpha, A, LDA, x, strideX, beta, y, strideY ) {
 		}
 		return y;
 	}
-	// ( order === 'row-major' && uplo === 'lower') || ( order === 'column-major' && uplo === 'upper' )
+	// ( order === 'row-major' && u === 'lower') || ( order === 'column-major' && u === 'upper' )
 	ix = ox + ( ( N - 1 ) * strideX );
 	iy = oy + ( ( N - 1 ) * strideY );
 	for ( i = N - 1; i >= 0; i-- ) {
diff --git a/lib/node_modules/@stdlib/blas/base/dsymv/lib/ndarray.js b/lib/node_modules/@stdlib/blas/base/dsymv/lib/ndarray.js
index ea6d8bf9fd3b..ce5ccd7bb535 100644
--- a/lib/node_modules/@stdlib/blas/base/dsymv/lib/ndarray.js
+++ b/lib/node_modules/@stdlib/blas/base/dsymv/lib/ndarray.js
@@ -24,7 +24,7 @@ var dfill = require( '@stdlib/blas/ext/base/dfill' ).ndarray;
 var dscal = require( '@stdlib/blas/base/dscal' ).ndarray;
 var max = require( '@stdlib/math/base/special/max' );
 var isLayout = require( '@stdlib/blas/base/assert/is-layout' );
-var isMatrixTriangle = require( '@stdlib/blas/base/assert/is-matrix-triangle' );
+var resolveStr = require( '@stdlib/blas/base/matrix-triangle-resolve-str' );
 var isRowMajor = require( '@stdlib/ndarray/base/assert/is-row-major-string' );
 var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string' );
 
@@ -35,7 +35,7 @@ var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string
 * Performs the matrix-vector operation `y = alpha*A*x + beta*y` where `alpha` and `beta` are scalars, `x` and `y` are `N` element vectors, and `A` is an `N` by `N` symmetric matrix.
 *
 * @param {string} order - storage layout
-* @param {string} uplo - specifies whether the upper or lower triangular part of the symmetric matrix `A` should be referenced
+* @param {(integer|string)} uplo - specifies whether the upper or lower triangular part of the symmetric matrix `A` should be referenced
 * @param {NonNegativeInteger} N - number of elements along each dimension of `A`
 * @param {number} alpha - scalar constant
 * @param {Float64Array} A - matrix
@@ -79,11 +79,13 @@ function dsymv( order, uplo, N, alpha, A, LDA, x, strideX, offsetX, beta, y, str
 	var i;
 	var j;
 	var k;
+	var u;
 
 	if ( !isLayout( order ) ) {
 		throw new TypeError( 'invalid argument. First argument must be a valid order. Value: `%s`.', order );
 	}
-	if ( !isMatrixTriangle( uplo ) ) {
+	u = resolveStr( uplo );
+	if ( u === null ) {
 		throw new TypeError( 'invalid argument. Second argument must specify whether to reference the lower or upper triangular matrix. Value: `%s`.', uplo );
 	}
 	if ( N < 0 ) {
@@ -117,8 +119,8 @@ function dsymv( order, uplo, N, alpha, A, LDA, x, strideX, offsetX, beta, y, str
 
 	// Form: y = alpha*A*x + y
 	if (
-		( isRowMajor( order ) && uplo === 'upper' ) ||
-		( isColumnMajor( order ) && uplo === 'lower' )
+		( isRowMajor( order ) && u === 'upper' ) ||
+		( isColumnMajor( order ) && u === 'lower' )
 	) {
 		ix = ox;
 		iy = oy;
@@ -143,7 +145,7 @@ function dsymv( order, uplo, N, alpha, A, LDA, x, strideX, offsetX, beta, y, str
 		}
 		return y;
 	}
-	// ( order === 'row-major' && uplo === 'lower') || ( order === 'column-major' && uplo === 'upper' )
+	// ( order === 'row-major' && u === 'lower') || ( order === 'column-major' && u === 'upper' )
 	ix = ox + ( ( N - 1 ) * strideX );
 	iy = oy + ( ( N - 1 ) * strideY );
 	for ( i = N - 1; i >= 0; i-- ) {