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Ed Schouten authored
We already provide lgammaf_r() and lgamma_r(). It's not hard to also add lgammal_r(), for consistency. I am currently working on porting openlibm to an environment where global state, and thus signgam, is not available. By adding lgammal_r(), I can trivially disable support for signgam by just patching up src/e_lgamma{f,,l}.c. That way there is no need to patch up the actual algorithms.
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