24 lines
643 B
Go
24 lines
643 B
Go
// Copyright ©2018 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package quat
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// Conj returns the quaternion conjugate of q.
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func Conj(q Number) Number {
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return Number{Real: q.Real, Imag: -q.Imag, Jmag: -q.Jmag, Kmag: -q.Kmag}
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}
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// Inv returns the quaternion inverse of q.
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func Inv(q Number) Number {
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if IsInf(q) {
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return zero
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}
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a := Abs(q)
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return Scale(1/(a*a), Conj(q))
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}
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