Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / lapack / gonum / dlascl.go

diff --git a/vendor/gonum.org/v1/gonum/lapack/gonum/dlascl.go b/vendor/gonum.org/v1/gonum/lapack/gonum/dlascl.go
deleted file mode 100644 (file)
index 51363fe..0000000
--- a/vendor/gonum.org/v1/gonum/lapack/gonum/dlascl.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright ©2015 The Gonum Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package gonum
-
-import (
-       "math"
-
-       "gonum.org/v1/gonum/lapack"
-)
-
-// Dlascl multiplies an m×n matrix by the scalar cto/cfrom.
-//
-// cfrom must not be zero, and cto and cfrom must not be NaN, otherwise Dlascl
-// will panic.
-//
-// Dlascl is an internal routine. It is exported for testing purposes.
-func (impl Implementation) Dlascl(kind lapack.MatrixType, kl, ku int, cfrom, cto float64, m, n int, a []float64, lda int) {
-       checkMatrix(m, n, a, lda)
-       if cfrom == 0 {
-               panic(zeroDiv)
-       }
-       if math.IsNaN(cfrom) || math.IsNaN(cto) {
-               panic(nanScale)
-       }
-       if n == 0 || m == 0 {
-               return
-       }
-       smlnum := dlamchS
-       bignum := 1 / smlnum
-       cfromc := cfrom
-       ctoc := cto
-       cfrom1 := cfromc * smlnum
-       for {
-               var done bool
-               var mul, ctol float64
-               if cfrom1 == cfromc {
-                       // cfromc is inf.
-                       mul = ctoc / cfromc
-                       done = true
-                       ctol = ctoc
-               } else {
-                       ctol = ctoc / bignum
-                       if ctol == ctoc {
-                               // ctoc is either 0 or inf.
-                               mul = ctoc
-                               done = true
-                               cfromc = 1
-                       } else if math.Abs(cfrom1) > math.Abs(ctoc) && ctoc != 0 {
-                               mul = smlnum
-                               done = false
-                               cfromc = cfrom1
-                       } else if math.Abs(ctol) > math.Abs(cfromc) {
-                               mul = bignum
-                               done = false
-                               ctoc = ctol
-                       } else {
-                               mul = ctoc / cfromc
-                               done = true
-                       }
-               }
-               switch kind {
-               default:
-                       panic("lapack: not implemented")
-               case lapack.General:
-                       for i := 0; i < m; i++ {
-                               for j := 0; j < n; j++ {
-                                       a[i*lda+j] = a[i*lda+j] * mul
-                               }
-                       }
-               case lapack.UpperTri:
-                       for i := 0; i < m; i++ {
-                               for j := i; j < n; j++ {
-                                       a[i*lda+j] = a[i*lda+j] * mul
-                               }
-                       }
-               case lapack.LowerTri:
-                       for i := 0; i < m; i++ {
-                               for j := 0; j <= min(i, n-1); j++ {
-                                       a[i*lda+j] = a[i*lda+j] * mul
-                               }
-                       }
-               }
-               if done {
-                       break
-               }
-       }
-}