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la_lapack::gtcon Interface Reference
GTCON: estimates the reciprocal of the condition number of a complex tridiagonal matrix A using the LU factorization as computed by CGTTRF. An estimate is obtained for norm(inv(A)), and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))). More...
Public Member Functions | |
| pure subroutine | cgtcon (norm, n, dl, d, du, du2, ipiv, anorm, rcond, work, info) |
| la_cgtcon | |
| pure subroutine | dgtcon (norm, n, dl, d, du, du2, ipiv, anorm, rcond, work, iwork, info) |
| la_dgtcon | |
| la_qgtcon | |
| pure subroutine | sgtcon (norm, n, dl, d, du, du2, ipiv, anorm, rcond, work, iwork, info) |
| la_sgtcon | |
| la_wgtcon | |
| pure subroutine | zgtcon (norm, n, dl, d, du, du2, ipiv, anorm, rcond, work, info) |
| la_zgtcon | |
Detailed Description
GTCON: estimates the reciprocal of the condition number of a complex tridiagonal matrix A using the LU factorization as computed by CGTTRF. An estimate is obtained for norm(inv(A)), and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).
Member Function/Subroutine Documentation
◆ cgtcon()
| pure subroutine la_lapack::gtcon::cgtcon | ( | character, intent(in) | norm, |
| integer(ilp), intent(in) | n, | ||
| complex(sp), dimension(*), intent(in) | dl, | ||
| complex(sp), dimension(*), intent(in) | d, | ||
| complex(sp), dimension(*), intent(in) | du, | ||
| complex(sp), dimension(*), intent(in) | du2, | ||
| integer(ilp), dimension(*), intent(in) | ipiv, | ||
| real(sp), intent(in) | anorm, | ||
| real(sp), intent(out) | rcond, | ||
| complex(sp), dimension(*), intent(out) | work, | ||
| integer(ilp), intent(out) | info ) |
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◆ dgtcon()
| pure subroutine la_lapack::gtcon::dgtcon | ( | character, intent(in) | norm, |
| integer(ilp), intent(in) | n, | ||
| real(dp), dimension(*), intent(in) | dl, | ||
| real(dp), dimension(*), intent(in) | d, | ||
| real(dp), dimension(*), intent(in) | du, | ||
| real(dp), dimension(*), intent(in) | du2, | ||
| integer(ilp), dimension(*), intent(in) | ipiv, | ||
| real(dp), intent(in) | anorm, | ||
| real(dp), intent(out) | rcond, | ||
| real(dp), dimension(*), intent(out) | work, | ||
| integer(ilp), dimension(*), intent(out) | iwork, | ||
| integer(ilp), intent(out) | info ) |
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◆ la_cgtcon()
| la_lapack::gtcon::la_cgtcon |
◆ la_dgtcon()
| la_lapack::gtcon::la_dgtcon |
◆ la_qgtcon()
| la_lapack::gtcon::la_qgtcon |
◆ la_sgtcon()
| la_lapack::gtcon::la_sgtcon |
◆ la_wgtcon()
| la_lapack::gtcon::la_wgtcon |
◆ la_zgtcon()
| la_lapack::gtcon::la_zgtcon |
◆ sgtcon()
| pure subroutine la_lapack::gtcon::sgtcon | ( | character, intent(in) | norm, |
| integer(ilp), intent(in) | n, | ||
| real(sp), dimension(*), intent(in) | dl, | ||
| real(sp), dimension(*), intent(in) | d, | ||
| real(sp), dimension(*), intent(in) | du, | ||
| real(sp), dimension(*), intent(in) | du2, | ||
| integer(ilp), dimension(*), intent(in) | ipiv, | ||
| real(sp), intent(in) | anorm, | ||
| real(sp), intent(out) | rcond, | ||
| real(sp), dimension(*), intent(out) | work, | ||
| integer(ilp), dimension(*), intent(out) | iwork, | ||
| integer(ilp), intent(out) | info ) |
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◆ zgtcon()
| pure subroutine la_lapack::gtcon::zgtcon | ( | character, intent(in) | norm, |
| integer(ilp), intent(in) | n, | ||
| complex(dp), dimension(*), intent(in) | dl, | ||
| complex(dp), dimension(*), intent(in) | d, | ||
| complex(dp), dimension(*), intent(in) | du, | ||
| complex(dp), dimension(*), intent(in) | du2, | ||
| integer(ilp), dimension(*), intent(in) | ipiv, | ||
| real(dp), intent(in) | anorm, | ||
| real(dp), intent(out) | rcond, | ||
| complex(dp), dimension(*), intent(out) | work, | ||
| integer(ilp), intent(out) | info ) |
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The documentation for this interface was generated from the following file:
