diff --git a/lib/node_modules/@stdlib/number/int32/base/mul/test/fixtures/c/runner.c b/lib/node_modules/@stdlib/number/int32/base/mul/test/fixtures/c/runner.c
index f3762c1d9e29..1c2779288502 100644
--- a/lib/node_modules/@stdlib/number/int32/base/mul/test/fixtures/c/runner.c
+++ b/lib/node_modules/@stdlib/number/int32/base/mul/test/fixtures/c/runner.c
@@ -140,7 +140,7 @@ void rand_array_i32( int *out, const unsigned int len, const int a, const int b
 * @param x    input array
 * @param len  array length
 */
-void i32_to_f64( double *out, int *x, unsigned int len ) {
+void i32_to_f64( double *out, const int *x, unsigned int len ) {
 	unsigned int i;
 
 	for ( i = 0; i < len; i++ ) {
@@ -155,7 +155,7 @@ void i32_to_f64( double *out, int *x, unsigned int len ) {
 * @param x    input array
 * @param len  array length
 */
-void f64_to_i32( int *out, double *x, unsigned int len ) {
+void f64_to_i32( int *out, const double *x, unsigned int len ) {
 	unsigned int i;
 
 	for ( i = 0; i < len; i++ ) {
@@ -259,7 +259,7 @@ void write_data_as_json( FILE *f, const int *a, const int *b, const int *y, cons
 * @param len   number of values in the domain
 * @param name  output filename
 */
-void generate( int *a, int *b, const unsigned int len, const char *name ) {
+void generate( const int *a, const int *b, const unsigned int len, const char *name ) {
 	unsigned int i;
 	int *y;
 	FILE *f;