| 837 | /// \param arg function argument |
| 838 | /// \return function value stored in single-preicision |
| 839 | MEGDNN_HOST MEGDNN_DEVICE static expr log(float arg) { |
| 840 | #if defined(__CUDA_ARCH__) |
| 841 | return expr(logf(arg)); |
| 842 | #else |
| 843 | return expr(std::log(arg)); |
| 844 | #endif |
| 845 | } |
| 846 | |
| 847 | /// Common logarithm implementation. |
| 848 | /// \param arg function argument |