ORMTR: overwrites the general real M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N': Q * C C * Q TRANS = 'T': Q**T * C C * Q**T where Q is a real orthogonal matrix of order nq, with nq = m if SIDE = 'L' and nq = n if SIDE = 'R'. Q is defined as the product of nq-1 elementary reflectors, as returned by DSYTRD: if UPLO = 'U', Q = H(nq-1) . . . H(2) H(1); if UPLO = 'L', Q = H(1) H(2) . . . H(nq-1).
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| pure subroutine | dormtr (side, uplo, trans, m, n, a, lda, tau, c, ldc, work, lwork, info) |
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| | la_dormtr |
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| | la_qormtr |
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| pure subroutine | sormtr (side, uplo, trans, m, n, a, lda, tau, c, ldc, work, lwork, info) |
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| | la_sormtr |
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ORMTR: overwrites the general real M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N': Q * C C * Q TRANS = 'T': Q**T * C C * Q**T where Q is a real orthogonal matrix of order nq, with nq = m if SIDE = 'L' and nq = n if SIDE = 'R'. Q is defined as the product of nq-1 elementary reflectors, as returned by DSYTRD: if UPLO = 'U', Q = H(nq-1) . . . H(2) H(1); if UPLO = 'L', Q = H(1) H(2) . . . H(nq-1).
◆ dormtr()
| pure subroutine la_lapack::ormtr::dormtr |
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character, intent(in) |
side, |
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character, intent(in) |
uplo, |
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character, intent(in) |
trans, |
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integer(ilp), intent(in) |
m, |
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integer(ilp), intent(in) |
n, |
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real(dp), dimension(lda,*), intent(inout) |
a, |
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integer(ilp), intent(in) |
lda, |
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real(dp), dimension(*), intent(in) |
tau, |
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real(dp), dimension(ldc,*), intent(inout) |
c, |
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integer(ilp), intent(in) |
ldc, |
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real(dp), dimension(*), intent(out) |
work, |
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integer(ilp), intent(in) |
lwork, |
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integer(ilp), intent(out) |
info |
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◆ la_dormtr()
| la_lapack::ormtr::la_dormtr |
◆ la_qormtr()
| la_lapack::ormtr::la_qormtr |
◆ la_sormtr()
| la_lapack::ormtr::la_sormtr |
◆ sormtr()
| pure subroutine la_lapack::ormtr::sormtr |
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character, intent(in) |
side, |
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character, intent(in) |
uplo, |
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character, intent(in) |
trans, |
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integer(ilp), intent(in) |
m, |
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integer(ilp), intent(in) |
n, |
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real(sp), dimension(lda,*), intent(inout) |
a, |
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integer(ilp), intent(in) |
lda, |
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real(sp), dimension(*), intent(in) |
tau, |
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real(sp), dimension(ldc,*), intent(inout) |
c, |
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integer(ilp), intent(in) |
ldc, |
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real(sp), dimension(*), intent(out) |
work, |
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integer(ilp), intent(in) |
lwork, |
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integer(ilp), intent(out) |
info |
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The documentation for this interface was generated from the following file:
1.9.8