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| author |  Benoit Steiner <benoit.steiner.goog@gmail.com> | 2016-03-04 16:42:38 -0800 |
|---|---|---|
| committer | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2016-03-04 16:42:38 -0800 |
| commit | ec35068edcacee6aae67c136e6f7c26e473186bd (patch) | |
| tree | cd8ca41240a4dd73814fb951beb2016fa6ce319b /unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h | |
| parent | 60d9df11c172ecb040ce5ba08087ee4c3fd8e9e6 (diff) | |
Don't rely on the M_PI constant since not all compilers provide it.
Diffstat (limited to 'unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h')
| -rw-r--r-- | unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h index 867512d67..ece2695ee 100644 --- a/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h +++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h @@ -225,8 +225,9 @@ struct TensorEvaluator<const TensorFFTOp<FFT, ArgType, FFTResultType, FFTDir>, D // For n > 2 we use the recurrence t_n = t_{n-1}^2 / t_{n-2} * t_1^2 pos_j_base_powered[0] = ComplexScalar(1, 0); if (line_len > 1) { + const RealScalar PI(3.14159265358979323846); const ComplexScalar pos_j_base = ComplexScalar( - std::cos(M_PI / line_len), std::sin(M_PI / line_len)); + std::cos(PI / line_len), std::sin(PI / line_len)); pos_j_base_powered[1] = pos_j_base; if (line_len > 2) { const ComplexScalar pos_j_base_sq = pos_j_base * pos_j_base; |