Hi Joseph, > I don't see tests for the various special cases from Annex F (for example, > "tanpi(n) returns +0, for positive even and negative odd integers n." and > "tanpi(n) returns -0, for positive odd and negative even integers n."). > In such cases the sign of zero would need to be checked specifically (via > copysign or signbit).
Thanks for the suggestions! The tests are now added; please check the attached patch. > Similar considerations may apply to other functions as well - and would be > avoided by not trying to do the optimizations with older MPFR versions. While conditionally optimizing these built-in functions based on the available MPFR version seems beneficial, it poses a testing challenge. Specifically, test cases would need a mechanism to dynamically determine the MPFR version in use. Yuao
0001-gcc-middle-end-opt-for-trigonometric-pi-based-functi.patch
Description: 0001-gcc-middle-end-opt-for-trigonometric-pi-based-functi.patch
