Add documentation comments

include/kernels/matmul.cuh

@@ -3,6 +3,15 @@
 
 namespace Kernels {
 
+/**
+ * @brief Matrix vector multiplication kernel
+ * 
+ * @param d_matrix Device pointer to matrix
+ * @param d_vector Device pointer to vector
+ * @param d_output Device pointer to output vector
+ * @param w Width of the matrix
+ * @param h Height of the matrix
+ */
 __global__ void mat_vec_mul(
     const float* d_matrix,
     const float* d_vector,
@@ -11,6 +20,14 @@ __global__ void mat_vec_mul(
     int          h
 );
 
+/**
+ * @brief Vector vector addition kernel
+ * 
+ * @param d_vector1 Device pointer to first vector
+ * @param d_vector2 Device pointer to second vector
+ * @param d_output Device pointer to output vector
+ * @param w Length of the vectors
+ */
 __global__ void vec_vec_add(
     const float* d_vector1,
     const float* d_vector2,