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author | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-11-18 11:37:58 -0800 |
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committer | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-11-18 11:37:58 -0800 |
commit | 1dd444ea71d30cc3a1eab7af0ba3f6a0357ae93c (patch) | |
tree | f34b56358cd926957f054657c96126c9f24a84a4 /unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h | |
parent | 4926251f130faca49ffc743e88e397eb3e9db9c5 (diff) |
Avoid using the version of TensorIntDiv optimized for 32-bit integers when the divisor can be equal to one since it isn't supported.
Diffstat (limited to 'unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h')
-rw-r--r-- | unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h b/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h index fd2441894..058fb2c42 100644 --- a/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h +++ b/unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h @@ -116,7 +116,7 @@ namespace { } -template <typename T> +template <typename T, bool div_gt_one = false> struct TensorIntDivisor { public: EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorIntDivisor() { @@ -166,8 +166,9 @@ struct TensorIntDivisor { // Optimized version for signed 32 bit integers. // Derived from Hacker's Delight. +// Only works for divisors strictly greater than one template <> -class TensorIntDivisor<int32_t> { +class TensorIntDivisor<int32_t, true> { public: EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorIntDivisor() { magic = 0; @@ -226,8 +227,8 @@ private: }; -template <typename T> -static EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T operator / (const T& numerator, const TensorIntDivisor<T>& divisor) { +template <typename T, bool div_gt_one> +static EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T operator / (const T& numerator, const TensorIntDivisor<T, div_gt_one>& divisor) { return divisor.divide(numerator); } |