Xiang Gao de493a26b9 [libc++] Fix buggy numerics of tanh(complex) at inf ...

Because:
    lim[x->inf, tanh(x+iy)] = 1
    lim[x->-inf, tanh(x+iy)] = -1

See also https://github.com/NVIDIA/libcudacxx/pull/210

Differential Revision: https://reviews.llvm.org/D112252

2021-10-28 16:10:56 -04:00

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