Function Syr2

* Symmetric rank-2 update. syr2(x, y, A, uplo='L', alpha=1.0, n=A.size[0], incx=1, incy=1, ldA=max(1,A.size[0]), offsetx=0, offsety=0, offsetA=0) PURPOSE Computes A := A + alpha*(x*y^T + y*x^T) with A real symmetric matrix of order n. ARGUMENTS x float matrix y float matr

(X, Y, A matrix.Matrix, alpha matrix.Scalar, opts ...linalg.Option)