Function gsl_sys::gsl_linalg_matmult_mod

pub unsafe extern "C" fn gsl_linalg_matmult_mod(
    A: *const gsl_matrix, 
    modA: gsl_linalg_matrix_mod_t, 
    B: *const gsl_matrix, 
    modB: gsl_linalg_matrix_mod_t, 
    C: *mut gsl_matrix
) -> c_int