Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / lapack / gonum / dtrti2.go

diff --git a/vendor/gonum.org/v1/gonum/lapack/gonum/dtrti2.go b/vendor/gonum.org/v1/gonum/lapack/gonum/dtrti2.go
deleted file mode 100644 (file)
index a43efe6..0000000
--- a/vendor/gonum.org/v1/gonum/lapack/gonum/dtrti2.go
+++ /dev/null
@@ -1,57 +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 (
-       "gonum.org/v1/gonum/blas"
-       "gonum.org/v1/gonum/blas/blas64"
-)
-
-// Dtrti2 computes the inverse of a triangular matrix, storing the result in place
-// into a. This is the BLAS level 2 version of the algorithm.
-//
-// Dtrti2 is an internal routine. It is exported for testing purposes.
-func (impl Implementation) Dtrti2(uplo blas.Uplo, diag blas.Diag, n int, a []float64, lda int) {
-       checkMatrix(n, n, a, lda)
-       if uplo != blas.Upper && uplo != blas.Lower {
-               panic(badUplo)
-       }
-       if diag != blas.NonUnit && diag != blas.Unit {
-               panic(badDiag)
-       }
-       bi := blas64.Implementation()
-
-       nonUnit := diag == blas.NonUnit
-       // TODO(btracey): Replace this with a row-major ordering.
-       if uplo == blas.Upper {
-               for j := 0; j < n; j++ {
-                       var ajj float64
-                       if nonUnit {
-                               ajj = 1 / a[j*lda+j]
-                               a[j*lda+j] = ajj
-                               ajj *= -1
-                       } else {
-                               ajj = -1
-                       }
-                       bi.Dtrmv(blas.Upper, blas.NoTrans, diag, j, a, lda, a[j:], lda)
-                       bi.Dscal(j, ajj, a[j:], lda)
-               }
-               return
-       }
-       for j := n - 1; j >= 0; j-- {
-               var ajj float64
-               if nonUnit {
-                       ajj = 1 / a[j*lda+j]
-                       a[j*lda+j] = ajj
-                       ajj *= -1
-               } else {
-                       ajj = -1
-               }
-               if j < n-1 {
-                       bi.Dtrmv(blas.Lower, blas.NoTrans, diag, n-j-1, a[(j+1)*lda+j+1:], lda, a[(j+1)*lda+j:], lda)
-                       bi.Dscal(n-j-1, ajj, a[(j+1)*lda+j:], lda)
-               }
-       }
-}