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We compute atan2f(y, x) in 2 stages: - Fast step: perform computations in double precision , with relative errors < 2^-50 - Accurate step: if the result from the Fast step fails Ziv's rounding test, then we perform computations in double-double precision, with relative errors < 2^-100. On Ryzen 5900X, worst-case latency is ~ 200 clocks, compared to average latency ~ 60 clocks, and average reciprocal throughput ~ 20 clocks.
libc Documentation ================== The libc documentation is written using the Sphinx documentation generator. It is currently tested with Sphinx 1.1.3. To build the documents into html configure libc with the following cmake options: * -DLLVM_ENABLE_SPHINX=ON * -DLIBC_INCLUDE_DOCS=ON After configuring libc with these options the make rule `docs-libc-html` should be available.