X-Git-Url: http://git.osdn.net/view?p=bytom%2Fvapor.git;a=blobdiff_plain;f=vendor%2Fgonum.org%2Fv1%2Fgonum%2Flapack%2Ftestlapack%2Fdlartg.go;fp=vendor%2Fgonum.org%2Fv1%2Fgonum%2Flapack%2Ftestlapack%2Fdlartg.go;h=0000000000000000000000000000000000000000;hp=e0c414a130bbef93fe106a8af48228758c7d7ede;hb=2cf5801b2e693a45de9b51ec9aa9c1f787d57105;hpb=0dff3fcf4fbd306176d561d721c1c31e58d90742

diff --git a/vendor/gonum.org/v1/gonum/lapack/testlapack/dlartg.go b/vendor/gonum.org/v1/gonum/lapack/testlapack/dlartg.go
deleted file mode 100644
index e0c414a1..00000000
--- a/vendor/gonum.org/v1/gonum/lapack/testlapack/dlartg.go
+++ /dev/null
@@ -1,99 +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 (
-	"math"
-	"testing"
-
-	"golang.org/x/exp/rand"
-
-	"gonum.org/v1/gonum/floats"
-)
-
-type Dlartger interface {
-	Dlartg(f, g float64) (cs, sn, r float64)
-}
-
-func DlartgTest(t *testing.T, impl Dlartger) {
-	const tol = 1e-14
-	// safmn2 and safmx2 are copied from native.Dlartg.
-	safmn2 := math.Pow(dlamchB, math.Trunc(math.Log(dlamchS/dlamchE)/math.Log(dlamchB)/2))
-	safmx2 := 1 / safmn2
-	rnd := rand.New(rand.NewSource(1))
-	for i := 0; i < 1000; i++ {
-		var f float64
-		var fHuge bool
-		switch rnd.Intn(3) {
-		case 0:
-			// Huge f.
-			fHuge = true
-			f = math.Pow(10, 10-20*rnd.Float64()) * safmx2
-		case 1:
-			// Tiny f.
-			f = math.Pow(10, 10-20*rnd.Float64()) * safmn2
-		default:
-			f = rnd.NormFloat64()
-		}
-		if rnd.Intn(2) == 0 {
-			f *= -1
-		}
-
-		var g float64
-		var gHuge bool
-		switch rnd.Intn(3) {
-		case 0:
-			// Huge g.
-			gHuge = true
-			g = math.Pow(10, 10-20*rnd.Float64()) * safmx2
-		case 1:
-			// Tiny g.
-			g = math.Pow(10, 10-20*rnd.Float64()) * safmn2
-		default:
-			g = rnd.NormFloat64()
-		}
-		if rnd.Intn(2) == 0 {
-			g *= -1
-		}
-
-		cs, sn, r := impl.Dlartg(f, g)
-
-		rWant := cs*f + sn*g
-		if !floats.EqualWithinAbsOrRel(math.Abs(rWant), math.Abs(r), tol, tol) {
-			t.Errorf("Case f=%v,g=%v: unexpected r. Want %v, got %v", f, g, rWant, r)
-		}
-		oneTest := cs*cs + sn*sn
-		if math.Abs(oneTest-1) > tol {
-			t.Errorf("Case f=%v,g=%v: expected cs^2+sn^2==1, got %v", f, g, oneTest)
-		}
-		if !fHuge && !gHuge {
-			zeroTest := -sn*f + cs*g
-			if math.Abs(zeroTest) > tol {
-				t.Errorf("Case f=%v,g=%v: expected zero, got %v", f, g, zeroTest)
-			}
-		}
-		if math.Abs(f) > math.Abs(g) && cs < 0 {
-			t.Errorf("Case f=%v,g=%v: unexpected negative cs %v", f, g, cs)
-		}
-	}
-	for i := 0; i < 100; i++ {
-		cs, sn, _ := impl.Dlartg(rnd.NormFloat64(), 0)
-		if cs != 1 {
-			t.Errorf("Unexpected cs for g=0. Want 1, got %v", cs)
-		}
-		if sn != 0 {
-			t.Errorf("Unexpected sn for g=0. Want 0, got %v", sn)
-		}
-	}
-	for i := 0; i < 100; i++ {
-		cs, sn, _ := impl.Dlartg(0, rnd.NormFloat64())
-		if cs != 0 {
-			t.Errorf("Unexpected cs for f=0. Want 0, got %v", cs)
-		}
-		if sn != 1 {
-			t.Errorf("Unexpected sn for f=0. Want 1, got %v", sn)
-		}
-	}
-}