fixed dependencies

vendor/gonum.org/v1/gonum/num/quat/inf.go

@@ -0,0 +1,22 @@
+// Copyright ©2018 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.
+
+// Copyright 2017 The Go 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 quat
+
+import "math"
+
+// IsInf returns true if any of real(q), imag(q), jmag(q), or kmag(q) is an infinity.
+func IsInf(q Number) bool {
+	return math.IsInf(q.Real, 0) || math.IsInf(q.Imag, 0) || math.IsInf(q.Jmag, 0) || math.IsInf(q.Kmag, 0)
+}
+
+// Inf returns a quaternion infinity, quaternion(+Inf, +Inf, +Inf, +Inf).
+func Inf() Number {
+	inf := math.Inf(1)
+	return Number{Real: inf, Imag: inf, Jmag: inf, Kmag: inf}
+}