SYEQUB: computes row and column scalings intended to equilibrate a symmetric matrix A (with respect to the Euclidean norm) and reduce its condition number. The scale factors S are computed by the BIN algorithm (see references) so that the scaled matrix B with elements B(i,j) = S(i)*A(i,j)*S(j) has a condition number within a factor N of the smallest possible condition number over all possible diagonal scalings.
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| pure subroutine | csyequb (uplo, n, a, lda, s, scond, amax, work, info) |
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| | la_csyequb |
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| pure subroutine | dsyequb (uplo, n, a, lda, s, scond, amax, work, info) |
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| | la_dsyequb |
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| | la_qsyequb |
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| pure subroutine | ssyequb (uplo, n, a, lda, s, scond, amax, work, info) |
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| | la_ssyequb |
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| | la_wsyequb |
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| pure subroutine | zsyequb (uplo, n, a, lda, s, scond, amax, work, info) |
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| | la_zsyequb |
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SYEQUB: computes row and column scalings intended to equilibrate a symmetric matrix A (with respect to the Euclidean norm) and reduce its condition number. The scale factors S are computed by the BIN algorithm (see references) so that the scaled matrix B with elements B(i,j) = S(i)*A(i,j)*S(j) has a condition number within a factor N of the smallest possible condition number over all possible diagonal scalings.
◆ csyequb()
| pure subroutine la_lapack::syequb::csyequb |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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complex(sp), dimension(lda,*), intent(in) | a, |
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integer(ilp), intent(in) | lda, |
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real(sp), dimension(*), intent(out) | s, |
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real(sp), intent(out) | scond, |
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real(sp), intent(out) | amax, |
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complex(sp), dimension(*), intent(out) | work, |
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integer(ilp), intent(out) | info ) |
◆ dsyequb()
| pure subroutine la_lapack::syequb::dsyequb |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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real(dp), dimension(lda,*), intent(in) | a, |
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integer(ilp), intent(in) | lda, |
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real(dp), dimension(*), intent(out) | s, |
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real(dp), intent(out) | scond, |
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real(dp), intent(out) | amax, |
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real(dp), dimension(*), intent(out) | work, |
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integer(ilp), intent(out) | info ) |
◆ la_csyequb()
| la_lapack::syequb::la_csyequb |
◆ la_dsyequb()
| la_lapack::syequb::la_dsyequb |
◆ la_qsyequb()
| la_lapack::syequb::la_qsyequb |
◆ la_ssyequb()
| la_lapack::syequb::la_ssyequb |
◆ la_wsyequb()
| la_lapack::syequb::la_wsyequb |
◆ la_zsyequb()
| la_lapack::syequb::la_zsyequb |
◆ ssyequb()
| pure subroutine la_lapack::syequb::ssyequb |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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real(sp), dimension(lda,*), intent(in) | a, |
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integer(ilp), intent(in) | lda, |
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real(sp), dimension(*), intent(out) | s, |
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real(sp), intent(out) | scond, |
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real(sp), intent(out) | amax, |
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real(sp), dimension(*), intent(out) | work, |
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integer(ilp), intent(out) | info ) |
◆ zsyequb()
| pure subroutine la_lapack::syequb::zsyequb |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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complex(dp), dimension(lda,*), intent(in) | a, |
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integer(ilp), intent(in) | lda, |
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real(dp), dimension(*), intent(out) | s, |
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real(dp), intent(out) | scond, |
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real(dp), intent(out) | amax, |
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complex(dp), dimension(*), intent(out) | work, |
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integer(ilp), intent(out) | info ) |
The documentation for this interface was generated from the following file:
