blas_sys::cblas_dsyr2k

pub unsafe extern fn cblas_dsyr2k(layout: CblasLayout, uplo: CblasUplo, trans: CblasTranspose, n: c_int, k: c_int, alpha: c_double, a: *const c_double, lda: c_int, b: *const c_double, ldb: c_int, beta: c_double, c: *mut c_double, ldc: c_int)