Please comment your code, language is in C.

/* This function calculates the sparse matrix-vector multiply from the matrix in CSR format (i.e., a row Sacol ind, and car wars) and the vector in an array (i.e., vector_x). It stores the result in another array (i.e., res) input parameters: these are wanaumed by this function unsigned int** Sch_row_ht row pointers to samo col ind and Sam_was in CSR unsigned int** Sain_col_ind column index for the non-zeros in CSR double SK_wa values for the non-zeros in CSR int # of rows in the matrix int # of columns in the matrix int # of non-zeros in the matrix double vector_x input vector these are a aduced by this function double res Result of SpMV. res = A * x, where A is stored in CSR format and x is stored in vector_x return parameters: none void spmv (unsigned int* csr_row_ptr, unsigned int* csr_col_ind, double* csr vals, int m, int n, int nnz, double* vector_x, double* res) /* This function calculates the sparse matrix-vector multiply from the matrix in CSR format (i.e., a row Sacol ind, and car wars) and the vector in an array (i.e., vector_x). It stores the result in another array (i.e., res) input parameters: these are wanaumed by this function unsigned int** Sch_row_ht row pointers to samo col ind and Sam_was in CSR unsigned int** Sain_col_ind column index for the non-zeros in CSR double SK_wa values for the non-zeros in CSR int # of rows in the matrix int # of columns in the matrix int # of non-zeros in the matrix double vector_x input vector these are a aduced by this function double res Result of SpMV. res = A * x, where A is stored in CSR format and x is stored in vector_x return parameters: none void spmv (unsigned int* csr_row_ptr, unsigned int* csr_col_ind, double* csr vals, int m, int n, int nnz, double* vector_x, double* res)