table of contents
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/spot01.f(3) | Library Functions Manual | /home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/spot01.f(3) |
NAME¶
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/spot01.f
SYNOPSIS¶
Functions/Subroutines¶
subroutine SPOT01 (uplo, n, a, lda, afac, ldafac, rwork,
resid)
SPOT01
Function/Subroutine Documentation¶
subroutine SPOT01 (character uplo, integer n, real, dimension( lda, * ) a, integer lda, real, dimension( ldafac, * ) afac, integer ldafac, real, dimension( * ) rwork, real resid)¶
SPOT01
Purpose:
!> !> SPOT01 reconstructs a symmetric positive definite matrix A from !> its L*L' or U'*U factorization and computes the residual !> norm( L*L' - A ) / ( N * norm(A) * EPS ) or !> norm( U'*U - A ) / ( N * norm(A) * 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. !>
A
!> A is REAL array, dimension (LDA,N) !> The original symmetric matrix A. !>
LDA
!> LDA is INTEGER !> The leading dimension of the array A. LDA >= max(1,N) !>
AFAC
!> AFAC is REAL array, dimension (LDAFAC,N) !> On entry, the factor L or U from the L * L**T or U**T * U !> factorization of A. !> Overwritten with the reconstructed matrix, and then with !> the difference L * L**T - A (or U**T * U - A). !>
LDAFAC
!> LDAFAC is INTEGER !> The leading dimension of the array AFAC. LDAFAC >= max(1,N). !>
RWORK
!> RWORK is REAL array, dimension (N) !>
RESID
!> RESID is REAL !> If UPLO = 'L', norm(L * L**T - A) / ( N * norm(A) * EPS ) !> If UPLO = 'U', norm(U**T * U - A) / ( N * norm(A) * EPS ) !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 103 of file spot01.f.
Author¶
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.12.0 | LAPACK |