mirror of https://github.com/k3s-io/k3s
55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
// Copyright ©2016 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package mat
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// TriKind represents the triangularity of the matrix.
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type TriKind bool
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const (
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// Upper specifies an upper triangular matrix.
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Upper TriKind = true
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// Lower specifies a lower triangular matrix.
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Lower TriKind = false
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)
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// SVDKind specifies the treatment of singular vectors during an SVD
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// factorization.
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type SVDKind int
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const (
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// SVDNone specifies that no singular vectors should be computed during
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// the decomposition.
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SVDNone SVDKind = iota + 1
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// SVDThin computes the thin singular vectors, that is, it computes
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// A = U~ * Σ * V~^T
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// where U~ is of size m×min(m,n), Σ is a diagonal matrix of size min(m,n)×min(m,n)
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// and V~ is of size n×min(m,n).
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SVDThin
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// SVDFull computes the full singular value decomposition,
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// A = U * Σ * V^T
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// where U is of size m×m, Σ is an m×n diagonal matrix, and V is an n×n matrix.
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SVDFull
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)
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// GSVDKind specifies the treatment of singular vectors during a GSVD
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// factorization.
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type GSVDKind int
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const (
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// GSVDU specifies that the U singular vectors should be computed during
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// the decomposition.
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GSVDU GSVDKind = 1 << iota
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// GSVDV specifies that the V singular vectors should be computed during
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// the decomposition.
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GSVDV
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// GSVDQ specifies that the Q singular vectors should be computed during
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// the decomposition.
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GSVDQ
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// GSVDNone specifies that no singular vector should be computed during
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// the decomposition.
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GSVDNone
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)
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