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https://github.com/TECHNOFAB11/zfs-localpv.git
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fa76b346a0
- migrate to go module - bump go version 1.14.4 Signed-off-by: prateekpandey14 <prateek.pandey@mayadata.io>
59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
// Copyright ©2015 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 gonum
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import "gonum.org/v1/gonum/blas"
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// Dlacpy copies the elements of A specified by uplo into B. Uplo can specify
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// a triangular portion with blas.Upper or blas.Lower, or can specify all of the
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// elemest with blas.All.
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//
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// Dlacpy is an internal routine. It is exported for testing purposes.
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func (impl Implementation) Dlacpy(uplo blas.Uplo, m, n int, a []float64, lda int, b []float64, ldb int) {
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switch {
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case uplo != blas.Upper && uplo != blas.Lower && uplo != blas.All:
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panic(badUplo)
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case m < 0:
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panic(mLT0)
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case n < 0:
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panic(nLT0)
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case lda < max(1, n):
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panic(badLdA)
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case ldb < max(1, n):
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panic(badLdB)
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}
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if m == 0 || n == 0 {
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return
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}
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switch {
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case len(a) < (m-1)*lda+n:
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panic(shortA)
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case len(b) < (m-1)*ldb+n:
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panic(shortB)
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}
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switch uplo {
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case blas.Upper:
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for i := 0; i < m; i++ {
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for j := i; j < n; j++ {
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b[i*ldb+j] = a[i*lda+j]
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}
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}
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case blas.Lower:
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for i := 0; i < m; i++ {
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for j := 0; j < min(i+1, n); j++ {
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b[i*ldb+j] = a[i*lda+j]
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}
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}
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case blas.All:
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for i := 0; i < m; i++ {
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for j := 0; j < n; j++ {
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b[i*ldb+j] = a[i*lda+j]
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}
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}
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}
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}
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