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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>
51 lines
1.2 KiB
Go
51 lines
1.2 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/lapack"
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// Implementation is the native Go implementation of LAPACK routines. It
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// is built on top of calls to the return of blas64.Implementation(), so while
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// this code is in pure Go, the underlying BLAS implementation may not be.
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type Implementation struct{}
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var _ lapack.Float64 = Implementation{}
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func min(a, b int) int {
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if a < b {
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return a
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}
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return b
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}
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func max(a, b int) int {
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if a > b {
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return a
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}
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return b
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}
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func abs(a int) int {
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if a < 0 {
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return -a
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}
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return a
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}
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const (
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// dlamchE is the machine epsilon. For IEEE this is 2^{-53}.
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dlamchE = 1.0 / (1 << 53)
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// dlamchB is the radix of the machine (the base of the number system).
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dlamchB = 2
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// dlamchP is base * eps.
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dlamchP = dlamchB * dlamchE
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// dlamchS is the "safe minimum", that is, the lowest number such that
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// 1/dlamchS does not overflow, or also the smallest normal number.
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// For IEEE this is 2^{-1022}.
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dlamchS = 1.0 / (1 << 256) / (1 << 256) / (1 << 256) / (1 << 254)
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)
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