Function blas_sys::fortran::dsyr2_

pub unsafe extern fn dsyr2_(uplo: *const c_char,
                            n: *const c_int,
                            alpha: *const c_double,
                            x: *const c_double,
                            incx: *const c_int,
                            y: *const c_double,
                            incy: *const c_int,
                            a: *mut c_double,
                            lda: *const c_int)