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lapack64: add Lansb and Lantb

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Vladimir Chalupecky
2020-09-16 00:28:08 +02:00
committed by Vladimír Chalupecký
parent 9c9ecbc337
commit a9c58dba17
1 changed files with 19 additions and 0 deletions
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19
lapack/lapack64/lapack64.go
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@@ -424,6 +424,17 @@ func Lange(norm lapack.MatrixNorm, a blas64.General, work []float64) float64 {
return lapack64.Dlange(norm, a.Rows, a.Cols, a.Data, max(1, a.Stride), work) return lapack64.Dlange(norm, a.Rows, a.Cols, a.Data, max(1, a.Stride), work)
} }
// Lansb computes the specified norm of an n×n symmetric band matrix. If
// norm == lapack.MaxColumnSum or norm == lapack.MaxRowSum, work must have length
// at least n and this function will panic otherwise.
// There are no restrictions on work for the other matrix norms.
//
// Dlansb is not part of the lapack.Float64 interface and so calls to Lansb are always
// executed by the Gonum implementation.
func Lansb(norm lapack.MatrixNorm, a blas64.SymmetricBand, work []float64) float64 {
return gonum.Implementation{}.Dlansb(norm, a.Uplo, a.N, a.K, a.Data, max(1, a.Stride), work)
}
// Lansy computes the specified norm of an n×n symmetric matrix. If // Lansy computes the specified norm of an n×n symmetric matrix. If
// norm == lapack.MaxColumnSum or norm == lapack.MaxRowSum, work must have length // norm == lapack.MaxColumnSum or norm == lapack.MaxRowSum, work must have length
// at least n and this function will panic otherwise. // at least n and this function will panic otherwise.
@@ -439,6 +450,14 @@ func Lantr(norm lapack.MatrixNorm, a blas64.Triangular, work []float64) float64
return lapack64.Dlantr(norm, a.Uplo, a.Diag, a.N, a.N, a.Data, max(1, a.Stride), work) return lapack64.Dlantr(norm, a.Uplo, a.Diag, a.N, a.N, a.Data, max(1, a.Stride), work)
} }
// Lantb computes the specified norm of an n×n triangular band matrix A. If
// norm == lapack.MaxColumnSum work must have length at least n and this function
// will panic otherwise. There are no restrictions on work for the other matrix
// norms.
func Lantb(norm lapack.MatrixNorm, a blas64.TriangularBand, work []float64) float64 {
return gonum.Implementation{}.Dlantb(norm, a.Uplo, a.Diag, a.N, a.K, a.Data, max(1, a.Stride), work)
}
// Lapmt rearranges the columns of the m×n matrix X as specified by the // Lapmt rearranges the columns of the m×n matrix X as specified by the
// permutation k_0, k_1, ..., k_{n-1} of the integers 0, ..., n-1. // permutation k_0, k_1, ..., k_{n-1} of the integers 0, ..., n-1.
// //