ZPOT06(3)

🎀 NAME

okay bestie, welcome to the zpot06.f(3) page from the Library Functions Manual 💖. The file path on this page is:

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zpot06.f

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✨ SYNOPSIS

Functions/Subroutines

subroutine ZPOT06 (uplo, n, nrhs, a, lda, x, ldx, b, ldb, rwork, resid)
    ZPOT06

🦋 Function/Subroutine Documentation

subroutine ZPOT06 (character uplo, integer n, integer nrhs, complex*16,
    dimension( lda, * ) a, integer lda, complex*16, dimension( ldx, * ) x,
    integer ldx, complex*16, dimension( ldb, * ) b, integer ldb, double
    precision, dimension( * ) rwork, double precision resid)

ZPOT06 — that’s the main character of this page, periodt 👑

🌸 Purpose

ZPOT06 computes the residual for a solution of a system of linear equations A*x = b :

RESID = norm(B - A*X,inf) / ( norm(A,inf) * norm(X,inf) * EPS ),

where EPS is the machine epsilon.

🔥 Parameters

• UPLO — UPLO is CHARACTER*1. Specifies whether the upper or lower triangular part of the symmetric matrix A is stored: = 'U': Upper triangular; = 'L': Lower triangular.
• N — N is INTEGER. The number of rows and columns of the matrix A. N >= 0.
• NRHS — NRHS is INTEGER. The number of columns of B, the matrix of right hand sides. NRHS >= 0.
• A — A is COMPLEX*16 array, dimension (LDA,N). The original M x N matrix A.
• LDA — LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,N).
• X — X is COMPLEX*16 array, dimension (LDX,NRHS). The computed solution vectors for the system of linear equations.
• LDX — LDX is INTEGER. The leading dimension of the array X. If TRANS = 'N', LDX >= max(1,N); if TRANS = 'T' or 'C', LDX >= max(1,N).
• B — B is COMPLEX*16 array, dimension (LDB,NRHS). On entry, the right hand side vectors for the system of linear equations. On exit, B is overwritten with the difference B - A*X.
• LDB — LDB is INTEGER. The leading dimension of the array B. IF TRANS = 'N', LDB >= max(1,M); if TRANS = 'T' or 'C', LDB >= max(1,N).
• RWORK — RWORK is DOUBLE PRECISION array, dimension (N).
• RESID — RESID is DOUBLE PRECISION. The maximum over the number of right hand sides of norm(B - A*X) / ( norm(A) * norm(X) * EPS ).

👑 Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Definition at line 125 of file zpot06.f.

🌈 Author

Generated automatically by Doxygen for LAPACK from the source code.

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