zgbmv zgemv zgerc zgeru zhbmv zhemv zher zher2 zhpmv zhpr zhpr2 zsbmv zspmv zspr zspr2 zsymv zsyr zsyr2 ztbmv ztbsv ztpmv ztpsv ztrmv ztrsv

zsyr() void zsyr ( char  uplo, int  n, doublecomplex  alpha, doublecomplex  x[], int  incx, int  lda, doublecomplex  a[]  ) Rank 1 operation: A <- αxxT + A (complex symmetric matrices) (BLAS 2) Purpose This routine performs the symmetric rank 1 operation A <- alpha*x*x^T + A where alpha is a complex scalar, x is an n element vector and A is an n x n symmetric matrix. Parameters [in] uplo Specifies whether the upper or lower triangular part of the array a[][] is to be referenced as follows: = 'U': Only the upper triangular part of a[][] is to be referenced. = 'L': Only the lower triangular part of a[][] is to be referenced. [in] n Order of the matrix A. (n >= 0) (If n = 0, returns without computation) [in] alpha Scalar alpha. [in] x[] Array x[lx] (lx >= 1 + (n - 1)*abs(incx)) Vector x. [in] incx Storage spacing between elements of x. (incx != 0) [in] lda Leading dimension of the two dimensional array a[][]. (lda >= max(1, n)) [in,out] a[][] Array a[la][lda] (la >= n) [in] n x n symmetric matrix A. According to uplo, only the upper or lower triangular part is to be referenced. [out] n x n output symmetric matrix (= alpha*x*x^T + A). According to uplo, only upper or lower triangular part is overwritten. Reference BLAS