Function rgsl::cblas::level3::dgemm

pub fn dgemm(
    order: CblasOrder, 
    transA: CblasTranspose, 
    transB: CblasTranspose, 
    M: i32, 
    N: i32, 
    K: i32, 
    alpha: f64, 
    A: &[f64], 
    lda: i32, 
    B: &[f64], 
    ldb: i32, 
    beta: f64, 
    C: &mut [f64], 
    ldc: i32
)