Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / lapack / testlapack / dlasv2.go

diff --git a/vendor/gonum.org/v1/gonum/lapack/testlapack/dlasv2.go b/vendor/gonum.org/v1/gonum/lapack/testlapack/dlasv2.go
deleted file mode 100644 (file)
index ca62f67..0000000
--- a/vendor/gonum.org/v1/gonum/lapack/testlapack/dlasv2.go
+++ /dev/null
@@ -1,49 +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 testlapack
-
-import (
-       "testing"
-
-       "golang.org/x/exp/rand"
-
-       "gonum.org/v1/gonum/floats"
-)
-
-type Dlasv2er interface {
-       Dlasv2(f, g, h float64) (ssmin, ssmax, snr, csr, snl, csl float64)
-}
-
-func Dlasv2Test(t *testing.T, impl Dlasv2er) {
-       rnd := rand.New(rand.NewSource(1))
-       for i := 0; i < 100; i++ {
-               f := rnd.NormFloat64()
-               g := rnd.NormFloat64()
-               h := rnd.NormFloat64()
-
-               ssmin, ssmax, snr, csr, snl, csl := impl.Dlasv2(f, g, h)
-
-               // tmp =
-               // [ csl snl] [f g]
-               // [-snl csl] [0 h]
-               tmp11 := csl * f
-               tmp12 := csl*g + snl*h
-               tmp21 := -snl * f
-               tmp22 := -snl*g + csl*h
-               // lhs =
-               // [tmp11 tmp12] [csr -snr]
-               // [tmp21 tmp22] [snr  csr]
-               ans11 := tmp11*csr + tmp12*snr
-               ans12 := tmp11*-snr + tmp12*csr
-               ans21 := tmp21*csr + tmp22*snr
-               ans22 := tmp21*-snr + tmp22*csr
-
-               lhs := []float64{ans11, ans12, ans21, ans22}
-               rhs := []float64{ssmax, 0, 0, ssmin}
-               if !floats.EqualApprox(rhs, lhs, 1e-12) {
-                       t.Errorf("SVD mismatch. f = %v, g = %v, h = %v.\nLHS: %v\nRHS: %v", f, g, h, lhs, rhs)
-               }
-       }
-}