UNHR_COL: takes an M-by-N complex matrix Q_in with orthonormal columns as input, stored in A, and performs Householder Reconstruction (HR), i.e. reconstructs Householder vectors V(i) implicitly representing another M-by-N matrix Q_out, with the property that Q_in = Q_out*S, where S is an N-by-N diagonal matrix with diagonal entries equal to +1 or -1. The Householder vectors (columns V(i) of V) are stored in A on output, and the diagonal entries of S are stored in D. Block reflectors are also returned in T (same output format as CGEQRT).
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| pure subroutine | cunhr_col (m, n, nb, a, lda, t, ldt, d, info) |
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| | la_cunhr_col |
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| | la_wunhr_col |
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| pure subroutine | zunhr_col (m, n, nb, a, lda, t, ldt, d, info) |
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| | la_zunhr_col |
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UNHR_COL: takes an M-by-N complex matrix Q_in with orthonormal columns as input, stored in A, and performs Householder Reconstruction (HR), i.e. reconstructs Householder vectors V(i) implicitly representing another M-by-N matrix Q_out, with the property that Q_in = Q_out*S, where S is an N-by-N diagonal matrix with diagonal entries equal to +1 or -1. The Householder vectors (columns V(i) of V) are stored in A on output, and the diagonal entries of S are stored in D. Block reflectors are also returned in T (same output format as CGEQRT).
◆ cunhr_col()
| pure subroutine la_lapack::unhr_col::cunhr_col |
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integer(ilp), intent(in) | m, |
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integer(ilp), intent(in) | n, |
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integer(ilp), intent(in) | nb, |
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complex(sp), dimension(lda,*), intent(inout) | a, |
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integer(ilp), intent(in) | lda, |
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complex(sp), dimension(ldt,*), intent(out) | t, |
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integer(ilp), intent(in) | ldt, |
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complex(sp), dimension(*), intent(out) | d, |
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integer(ilp), intent(out) | info ) |
◆ la_cunhr_col()
| la_lapack::unhr_col::la_cunhr_col |
◆ la_wunhr_col()
| la_lapack::unhr_col::la_wunhr_col |
◆ la_zunhr_col()
| la_lapack::unhr_col::la_zunhr_col |
◆ zunhr_col()
| pure subroutine la_lapack::unhr_col::zunhr_col |
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integer(ilp), intent(in) | m, |
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integer(ilp), intent(in) | n, |
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integer(ilp), intent(in) | nb, |
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complex(dp), dimension(lda,*), intent(inout) | a, |
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integer(ilp), intent(in) | lda, |
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complex(dp), dimension(ldt,*), intent(out) | t, |
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integer(ilp), intent(in) | ldt, |
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complex(dp), dimension(*), intent(out) | d, |
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integer(ilp), intent(out) | info ) |
The documentation for this interface was generated from the following file:
