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3fa9374bd4
This merges the three packages, matrix, mat64, and cmat128. It then renames this big package to mat. It fixes the import statements and corresponding code
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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