# megengine.functional.asinh¶

asinh(x)[源代码]

Element-wise $$\sinh^{-1}(x)$$ function.

Calculates the inverse hyperbolic sine for each element $$x_i$$ of the input tensor $$x$$.

This function has domain [-infinity, +infinity] and codomain [-infinity, +infinity].

Special cases

For floating-point operands,

• If $$x_i$$ is NaN, the result is NaN.

• If $$x_i$$ is +0, the result is +0.

• If $$x_i$$ is -0, the result is -0.

• If $$x_i$$ is +infinity, the result is +infinity.

• If $$x_i$$ is -infinity, the result is +infinity.

x – input tensor whose elements each represent the area of a hyperbolic sector. Should have a floating-point data type.

a tensor containing the inverse hyperbolic sine of each element in $$x$$. The returned tensor must have a floating-point data type determined by 类型提升规则.

>>> F.asinh(0)
Tensor(0.0, device=xpux:0)


Element-wise inverse hyperbolic sine:

>>> x = Tensor([0, 1, -1])
>>> F.asinh(x)
Tensor([ 0.      0.8814 -0.8814], device=xpux:0)