LAPACK  3.7.1
LAPACK: Linear Algebra PACKage
Collaboration diagram for double:

Functions

double precision function dlansy (NORM, UPLO, N, A, LDA, WORK)
 DLANSY returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a real symmetric matrix. More...
 
subroutine dlaqsy (UPLO, N, A, LDA, S, SCOND, AMAX, EQUED)
 DLAQSY scales a symmetric/Hermitian matrix, using scaling factors computed by spoequ. More...
 
subroutine dlasy2 (LTRANL, LTRANR, ISGN, N1, N2, TL, LDTL, TR, LDTR, B, LDB, SCALE, X, LDX, XNORM, INFO)
 DLASY2 solves the Sylvester matrix equation where the matrices are of order 1 or 2. More...
 
subroutine dsyswapr (UPLO, N, A, LDA, I1, I2)
 DSYSWAPR applies an elementary permutation on the rows and columns of a symmetric matrix. More...
 
subroutine dtgsy2 (TRANS, IJOB, M, N, A, LDA, B, LDB, C, LDC, D, LDD, E, LDE, F, LDF, SCALE, RDSUM, RDSCAL, IWORK, PQ, INFO)
 DTGSY2 solves the generalized Sylvester equation (unblocked algorithm). More...
 

Detailed Description

This is the group of double auxiliary functions for SY matrices