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Bit shifting functions

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This commit is contained in:
Charles Schlosser
2024-05-03 18:55:02 +00:00
committed by Rasmus Munk Larsen
parent 9700fc847a
commit 8e47971789
6 changed files with 113 additions and 48 deletions
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30
Eigen/src/Core/GenericPacketMath.h
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@@ -709,33 +709,21 @@ EIGEN_DEVICE_FUNC inline Packet parg(const Packet& a) {
}
/** \internal \returns \a a arithmetically shifted by N bits to the right */
template <int N>
EIGEN_DEVICE_FUNC inline int parithmetic_shift_right(const int& a) {
return a >> N;
}
template <int N>
EIGEN_DEVICE_FUNC inline long int parithmetic_shift_right(const long int& a) {
return a >> N;
template <int N, typename T>
EIGEN_DEVICE_FUNC inline T parithmetic_shift_right(const T& a) {
return numext::arithmetic_shift_right(a, N);
}
/** \internal \returns \a a logically shifted by N bits to the right */
template <int N>
EIGEN_DEVICE_FUNC inline int plogical_shift_right(const int& a) {
return static_cast<int>(static_cast<unsigned int>(a) >> N);
}
template <int N>
EIGEN_DEVICE_FUNC inline long int plogical_shift_right(const long int& a) {
return static_cast<long>(static_cast<unsigned long>(a) >> N);
template <int N, typename T>
EIGEN_DEVICE_FUNC inline T plogical_shift_right(const T& a) {
return numext::logical_shift_right(a, N);
}
/** \internal \returns \a a shifted by N bits to the left */
template <int N>
EIGEN_DEVICE_FUNC inline int plogical_shift_left(const int& a) {
return a << N;
}
template <int N>
EIGEN_DEVICE_FUNC inline long int plogical_shift_left(const long int& a) {
return a << N;
template <int N, typename T>
EIGEN_DEVICE_FUNC inline T plogical_shift_left(const T& a) {
return numext::logical_shift_left(a, N);
}
/** \internal \returns the significant and exponent of the underlying floating point numbers