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# FreeBSD Man Pages

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- dgbbrd(l), DGBBRD(l)
- reduces a real general m-by-n band matrix A to upper bidiagonal form B by an orthogonal transformation
- dgbcon(l), DGBCON(l)
- estimates the reciprocal of the condition number of a real general band matrix A, in either the 1-norm or the infinity-norm,
- dgbequ(l), DGBEQU(l)
- computes row and column scalings intended to equilibrate an M-by-N band matrix A and reduce its condition number
- dgbequb(l), DGBEQUB(l)
- computes row and column scalings intended to equilibrate an M-by-N matrix A and reduce its condition number
- dgbrfs(l), DGBRFS(l)
- improves the computed solution to a system of linear equations when the coefficient matrix is banded, and provides error bounds and backward error estimates for the solution
- dgbrfsx(l), DGBRFSX(l)
- DGBRFSX improve the computed solution to a system of linear equations and provides error bounds and backward error estimates for the solution
- dgbsv(l), DGBSV(l)
- computes the solution to a real system of linear equations A * X = B, where A is a band matrix of order N with KL subdiagonals and KU superdiagonals, and X and B are N-by-NRHS matrices
- dgbsvx(l), DGBSVX(l)
- uses the LU factorization to compute the solution to a real system of linear equations A * X = B, A**T * X = B, or A**H * X = B,
- dgbsvxx(l), DGBSVXX(l)
- DGBSVXX use the LU factorization to compute the solution to a double precision system of linear equations A * X = B, where A is an N-by-N matrix and X and B are N-by-NRHS matrices
- dgbtf2(l), DGBTF2(l)
- computes an LU factorization of a real m-by-n band matrix A using partial pivoting with row interchanges
- dgbtrf(l), DGBTRF(l)
- computes an LU factorization of a real m-by-n band matrix A using partial pivoting with row interchanges
- dgbtrs(l), DGBTRS(l)
- solves a system of linear equations A * X = B or A(aq * X = B with a general band matrix A using the LU factorization computed by DGBTRF
- pdgbsv(l), PDGBSV(l)
- solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
- pdgbtrf(l), PDGBTRF(l)
- compute a LU factorization of an N-by-N real banded distributed matrix with bandwidth BWL, BWU
- pdgbtrs(l), PDGBTRS(l)
- solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
- sendgbmsg(8)
- Sends messages(signals) to graphicboot(8)

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