Apple Silicon HW FPE trapping & signal handling#116
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wdeconinck merged 11 commits intoApr 22, 2026
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…ceptions are unchanged on Apple Silicon
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Very nice to have hardware FPE trapping on macOS for the all IFS-related packages now! Thanks @Andrew-Beggs-ECMWF
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Description
This PR is inspired by work done in Atlas[1][2]. It uses the floating point control register (FPCR) and floating point status register (FPSR) to trap requested FPEs using hardware trapping. These are natively treated as SIGILL exceptions, so DrHook will now reinterpret them as SIGFPEs to maintain consistency with other platforms.
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