刘尚
刘尚
atanh(-3 + 0im) return -0.34657359027997264 + 1.5707963267948966im but the result shouldbe -0.34657359027997264 - 1.5707963267948966im may be something wrong?
> 这里发生的事情是在 处`asech`有一个分支`im=0`，所以 Julia 使用的公式 ( `asech(x) = acosh(inv(x))`) 被绊倒了，因为`inv(-3+0im)`is `-1/3 - 0.0im`（因为浮点很奇怪），这导致它占用了分支的另一半。 so is the result right?
acosh(-3 + 0im) return -1.762747174039086 + 3.141592653589793im but the result should be 1.762747174039086 + 3.141592653589793im ?
> 这似乎是一个错误。我们似乎采取了一些分支削减的错误方面。也就是说，您可能不应该依赖有限精度数学来处理此类事情，因为输入中的任何舍入误差都会导致不同的结果（因为函数不是连续的）。 So please ask if these issues will be fixed in the future Thank you very much for your reply
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