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Re: lib/44057 (tanh() function doesn't preserve the zero sign)

I tested on i386/5.1 and it fails there on i386 (basically the test case
t_tanh you just added to -current):

   signbit(d): 0 signbit(f): 1, d = 0.000000, f = -0.000000

So works for float, fails for double. Also fails on sparc64 current :-(


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