cblas_dsyr2()

void cblas_dsyr2	(	CBLAS_LAYOUT	layout,
		CBLAS_UPLO	Uplo,
		const CBLAS_INT	N,
		const double	alpha,
		const double *	X,
		const CBLAS_INT	incX,
		const double *	Y,
		const CBLAS_INT	incY,
		double *	A,
		const CBLAS_INT	lda
	)