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https://gitlab.com/libeigen/eigen.git
synced 2026-04-10 11:34:33 +08:00
Avoid I as an identifier, since it may clash with the C-header complex.h
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@@ -47,9 +47,9 @@ namespace internal {
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*/
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template<std::size_t I, class T> constexpr inline T& array_get(std::vector<T>& a) { return a[I]; }
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template<std::size_t I, class T> constexpr inline T&& array_get(std::vector<T>&& a) { return a[I]; }
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template<std::size_t I, class T> constexpr inline T const& array_get(std::vector<T> const& a) { return a[I]; }
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template<std::size_t I_, class T> constexpr inline T& array_get(std::vector<T>& a) { return a[I_]; }
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template<std::size_t I_, class T> constexpr inline T&& array_get(std::vector<T>&& a) { return a[I_]; }
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template<std::size_t I_, class T> constexpr inline T const& array_get(std::vector<T> const& a) { return a[I_]; }
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/* Suppose you have a template of the form
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* template<typename T> struct X;
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@@ -197,13 +197,13 @@ EIGEN_DEVICE_FUNC bool operator==(const array<T,N>& lhs, const array<T,N>& rhs)
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namespace internal {
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template<std::size_t I, class T, std::size_t N>
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template<std::size_t I_, class T, std::size_t N>
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EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T& array_get(array<T,N>& a) {
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return a[I];
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return a[I_];
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}
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template<std::size_t I, class T, std::size_t N>
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template<std::size_t I_, class T, std::size_t N>
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EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const T& array_get(const array<T,N>& a) {
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return a[I];
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return a[I_];
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}
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template<class T, std::size_t N> struct array_size<array<T,N> > {
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@@ -240,16 +240,16 @@ namespace internal {
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* this may not be constexpr
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*/
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#if defined(__GLIBCXX__) && __GLIBCXX__ < 20120322
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#define STD_GET_ARR_HACK a._M_instance[I]
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#define STD_GET_ARR_HACK a._M_instance[I_]
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#elif defined(_LIBCPP_VERSION)
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#define STD_GET_ARR_HACK a.__elems_[I]
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#define STD_GET_ARR_HACK a.__elems_[I_]
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#else
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#define STD_GET_ARR_HACK std::template get<I, T, N>(a)
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#define STD_GET_ARR_HACK std::template get<I_, T, N>(a)
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#endif
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template<std::size_t I, class T, std::size_t N> constexpr inline T& array_get(std::array<T,N>& a) { return (T&) STD_GET_ARR_HACK; }
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template<std::size_t I, class T, std::size_t N> constexpr inline T&& array_get(std::array<T,N>&& a) { return (T&&) STD_GET_ARR_HACK; }
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template<std::size_t I, class T, std::size_t N> constexpr inline T const& array_get(std::array<T,N> const& a) { return (T const&) STD_GET_ARR_HACK; }
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template<std::size_t I_, class T, std::size_t N> constexpr inline T& array_get(std::array<T,N>& a) { return (T&) STD_GET_ARR_HACK; }
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template<std::size_t I_, class T, std::size_t N> constexpr inline T&& array_get(std::array<T,N>&& a) { return (T&&) STD_GET_ARR_HACK; }
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template<std::size_t I_, class T, std::size_t N> constexpr inline T const& array_get(std::array<T,N> const& a) { return (T const&) STD_GET_ARR_HACK; }
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#undef STD_GET_ARR_HACK
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@@ -166,13 +166,13 @@ array<t, n> repeat(t v) {
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return array;
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}
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template<std::size_t I, class Head, class Tail>
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template<std::size_t I_, class Head, class Tail>
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EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE typename Head::type array_get(type_list<Head, Tail>&) {
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return get<I, type_list<Head, Tail> >::value;
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return get<I_, type_list<Head, Tail> >::value;
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}
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template<std::size_t I, class Head, class Tail>
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template<std::size_t I_, class Head, class Tail>
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EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE typename Head::type array_get(const type_list<Head, Tail>&) {
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return get<I, type_list<Head, Tail> >::value;
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return get<I_, type_list<Head, Tail> >::value;
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}
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template <class NList>
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@@ -200,13 +200,13 @@ EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(const std::vector<t>& a) {
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}
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template<std::size_t I, class T>
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template<std::size_t I_, class T>
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EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T& array_get(std::vector<T>& a) {
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return a[I];
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return a[I_];
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}
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template<std::size_t I, class T>
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template<std::size_t I_, class T>
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EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const T& array_get(const std::vector<T>& a) {
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return a[I];
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return a[I_];
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}
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struct sum_op {
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@@ -177,9 +177,9 @@ namespace Eigen
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// I, J, K are the pivot indexes permutation for the rotation matrix, that match this Euler system.
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// They are used in this class converters.
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// They are always different from each other, and their possible values are: 0, 1, or 2.
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I = AlphaAxisAbs - 1,
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J = (AlphaAxisAbs - 1 + 1 + IsOdd)%3,
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K = (AlphaAxisAbs - 1 + 2 - IsOdd)%3
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I_ = AlphaAxisAbs - 1,
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J_ = (AlphaAxisAbs - 1 + 1 + IsOdd)%3,
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K_ = (AlphaAxisAbs - 1 + 2 - IsOdd)%3
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;
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// TODO: Get @mat parameter in form that avoids double evaluation.
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@@ -194,24 +194,24 @@ namespace Eigen
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const Scalar plusMinus = IsEven? 1 : -1;
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const Scalar minusPlus = IsOdd? 1 : -1;
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const Scalar Rsum = sqrt((mat(I,I) * mat(I,I) + mat(I,J) * mat(I,J) + mat(J,K) * mat(J,K) + mat(K,K) * mat(K,K))/2);
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res[1] = atan2(plusMinus * mat(I,K), Rsum);
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const Scalar Rsum = sqrt((mat(I_,I_) * mat(I_,I_) + mat(I_,J_) * mat(I_,J_) + mat(J_,K_) * mat(J_,K_) + mat(K_,K_) * mat(K_,K_))/2);
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res[1] = atan2(plusMinus * mat(I_,K_), Rsum);
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// There is a singularity when cos(beta) == 0
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if(Rsum > 4 * NumTraits<Scalar>::epsilon()) {// cos(beta) != 0
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res[0] = atan2(minusPlus * mat(J, K), mat(K, K));
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res[2] = atan2(minusPlus * mat(I, J), mat(I, I));
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res[0] = atan2(minusPlus * mat(J_, K_), mat(K_, K_));
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res[2] = atan2(minusPlus * mat(I_, J_), mat(I_, I_));
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}
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else if(plusMinus * mat(I, K) > 0) {// cos(beta) == 0 and sin(beta) == 1
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Scalar spos = mat(J, I) + plusMinus * mat(K, J); // 2*sin(alpha + plusMinus * gamma
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Scalar cpos = mat(J, J) + minusPlus * mat(K, I); // 2*cos(alpha + plusMinus * gamma)
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else if(plusMinus * mat(I_, K_) > 0) {// cos(beta) == 0 and sin(beta) == 1
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Scalar spos = mat(J_, I_) + plusMinus * mat(K_, J_); // 2*sin(alpha + plusMinus * gamma
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Scalar cpos = mat(J_, J_) + minusPlus * mat(K_, I_); // 2*cos(alpha + plusMinus * gamma)
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Scalar alphaPlusMinusGamma = atan2(spos, cpos);
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res[0] = alphaPlusMinusGamma;
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res[2] = 0;
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}
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else {// cos(beta) == 0 and sin(beta) == -1
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Scalar sneg = plusMinus * (mat(K, J) + minusPlus * mat(J, I)); // 2*sin(alpha + minusPlus*gamma)
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Scalar cneg = mat(J, J) + plusMinus * mat(K, I); // 2*cos(alpha + minusPlus*gamma)
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Scalar sneg = plusMinus * (mat(K_, J_) + minusPlus * mat(J_, I_)); // 2*sin(alpha + minusPlus*gamma)
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Scalar cneg = mat(J_, J_) + plusMinus * mat(K_, I_); // 2*cos(alpha + minusPlus*gamma)
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Scalar alphaMinusPlusBeta = atan2(sneg, cneg);
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res[0] = alphaMinusPlusBeta;
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res[2] = 0;
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@@ -230,24 +230,24 @@ namespace Eigen
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const Scalar plusMinus = IsEven? 1 : -1;
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const Scalar minusPlus = IsOdd? 1 : -1;
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const Scalar Rsum = sqrt((mat(I, J) * mat(I, J) + mat(I, K) * mat(I, K) + mat(J, I) * mat(J, I) + mat(K, I) * mat(K, I)) / 2);
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const Scalar Rsum = sqrt((mat(I_, J_) * mat(I_, J_) + mat(I_, K_) * mat(I_, K_) + mat(J_, I_) * mat(J_, I_) + mat(K_, I_) * mat(K_, I_)) / 2);
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res[1] = atan2(Rsum, mat(I, I));
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res[1] = atan2(Rsum, mat(I_, I_));
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// There is a singularity when sin(beta) == 0
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if(Rsum > 4 * NumTraits<Scalar>::epsilon()) {// sin(beta) != 0
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res[0] = atan2(mat(J, I), minusPlus * mat(K, I));
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res[2] = atan2(mat(I, J), plusMinus * mat(I, K));
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res[0] = atan2(mat(J_, I_), minusPlus * mat(K_, I_));
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res[2] = atan2(mat(I_, J_), plusMinus * mat(I_, K_));
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}
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else if(mat(I, I) > 0) {// sin(beta) == 0 and cos(beta) == 1
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Scalar spos = plusMinus * mat(K, J) + minusPlus * mat(J, K); // 2*sin(alpha + gamma)
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Scalar cpos = mat(J, J) + mat(K, K); // 2*cos(alpha + gamma)
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else if(mat(I_, I_) > 0) {// sin(beta) == 0 and cos(beta) == 1
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Scalar spos = plusMinus * mat(K_, J_) + minusPlus * mat(J_, K_); // 2*sin(alpha + gamma)
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Scalar cpos = mat(J_, J_) + mat(K_, K_); // 2*cos(alpha + gamma)
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res[0] = atan2(spos, cpos);
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res[2] = 0;
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}
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else {// sin(beta) == 0 and cos(beta) == -1
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Scalar sneg = plusMinus * mat(K, J) + plusMinus * mat(J, K); // 2*sin(alpha - gamma)
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Scalar cneg = mat(J, J) - mat(K, K); // 2*cos(alpha - gamma)
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Scalar sneg = plusMinus * mat(K_, J_) + plusMinus * mat(J_, K_); // 2*sin(alpha - gamma)
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Scalar cneg = mat(J_, J_) - mat(K_, K_); // 2*cos(alpha - gamma)
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res[0] = atan2(sneg, cneg);
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res[2] = 0;
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}
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