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LAPACK
3.5.0
LAPACK: Linear Algebra PACKage
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Go to the source code of this file.
Functions/Subroutines | |
REAL function | cqrt12 (M, N, A, LDA, S, WORK, LWORK, RWORK) |
CQRT12 More... | |
REAL function cqrt12 | ( | integer | M, |
integer | N, | ||
complex, dimension( lda, * ) | A, | ||
integer | LDA, | ||
real, dimension( * ) | S, | ||
complex, dimension( lwork ) | WORK, | ||
integer | LWORK, | ||
real, dimension( * ) | RWORK | ||
) |
CQRT12
CQRT12 computes the singular values `svlues' of the upper trapezoid of A(1:M,1:N) and returns the ratio || s - svlues||/(||svlues||*eps*max(M,N))
[in] | M | M is INTEGER The number of rows of the matrix A. |
[in] | N | N is INTEGER The number of columns of the matrix A. |
[in] | A | A is COMPLEX array, dimension (LDA,N) The M-by-N matrix A. Only the upper trapezoid is referenced. |
[in] | LDA | LDA is INTEGER The leading dimension of the array A. |
[in] | S | S is REAL array, dimension (min(M,N)) The singular values of the matrix A. |
[out] | WORK | WORK is COMPLEX array, dimension (LWORK) |
[in] | LWORK | LWORK is INTEGER The length of the array WORK. LWORK >= M*N + 2*min(M,N) + max(M,N). |
[out] | RWORK | RWORK is REAL array, dimension (4*min(M,N)) |
Definition at line 97 of file cqrt12.f.