.TH "zla_syrcond_x.f" 3 "Wed Oct 15 2014" "Version 3.4.2" "LAPACK" \" -*- nroff -*- .ad l .nh .SH NAME zla_syrcond_x.f \- .SH SYNOPSIS .br .PP .SS "Functions/Subroutines" .in +1c .ti -1c .RI "double precision function \fBzla_syrcond_x\fP (UPLO, N, A, LDA, AF, LDAF, IPIV, X, INFO, WORK, RWORK)" .br .RI "\fI\fBZLA_SYRCOND_X\fP computes the infinity norm condition number of op(A)*diag(x) for symmetric indefinite matrices\&. \fP" .in -1c .SH "Function/Subroutine Documentation" .PP .SS "double precision function zla_syrcond_x (characterUPLO, integerN, complex*16, dimension( lda, * )A, integerLDA, complex*16, dimension( ldaf, * )AF, integerLDAF, integer, dimension( * )IPIV, complex*16, dimension( * )X, integerINFO, complex*16, dimension( * )WORK, double precision, dimension( * )RWORK)" .PP \fBZLA_SYRCOND_X\fP computes the infinity norm condition number of op(A)*diag(x) for symmetric indefinite matrices\&. .PP \fBPurpose: \fP .RS 4 .PP .nf ZLA_SYRCOND_X Computes the infinity norm condition number of op(A) * diag(X) where X is a COMPLEX*16 vector. .fi .PP .RE .PP \fBParameters:\fP .RS 4 \fIUPLO\fP .PP .nf UPLO is CHARACTER*1 = 'U': Upper triangle of A is stored; = 'L': Lower triangle of A is stored. .fi .PP .br \fIN\fP .PP .nf N is INTEGER The number of linear equations, i.e., the order of the matrix A. N >= 0. .fi .PP .br \fIA\fP .PP .nf A is COMPLEX*16 array, dimension (LDA,N) On entry, the N-by-N matrix A. .fi .PP .br \fILDA\fP .PP .nf LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). .fi .PP .br \fIAF\fP .PP .nf AF is COMPLEX*16 array, dimension (LDAF,N) The block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by ZSYTRF. .fi .PP .br \fILDAF\fP .PP .nf LDAF is INTEGER The leading dimension of the array AF. LDAF >= max(1,N). .fi .PP .br \fIIPIV\fP .PP .nf IPIV is INTEGER array, dimension (N) Details of the interchanges and the block structure of D as determined by ZSYTRF. .fi .PP .br \fIX\fP .PP .nf X is COMPLEX*16 array, dimension (N) The vector X in the formula op(A) * diag(X). .fi .PP .br \fIINFO\fP .PP .nf INFO is INTEGER = 0: Successful exit. i > 0: The ith argument is invalid. .fi .PP .br \fIWORK\fP .PP .nf WORK is COMPLEX*16 array, dimension (2*N). Workspace. .fi .PP .br \fIRWORK\fP .PP .nf RWORK is DOUBLE PRECISION array, dimension (N). Workspace. .fi .PP .RE .PP \fBAuthor:\fP .RS 4 Univ\&. of Tennessee .PP Univ\&. of California Berkeley .PP Univ\&. of Colorado Denver .PP NAG Ltd\&. .RE .PP \fBDate:\fP .RS 4 September 2012 .RE .PP .PP Definition at line 132 of file zla_syrcond_x\&.f\&. .SH "Author" .PP Generated automatically by Doxygen for LAPACK from the source code\&.