torch.ldexp#

torch.ldexp(input,other,*,out=None)→Tensor#

Multipliesinput by 2 **other.

$${\text{out}}_i={\text{input}}_i\ast 2_i^{\text{other}}$$outi​=inputi​∗2iother​

Typically this function is used to construct floating point numbers by multiplyingmantissas ininput with integral powers of two created from the exponentsinother.

Parameters:

• input (Tensor) – the input tensor.

• other (Tensor) – a tensor of exponents, typically integers.

Keyword Arguments:

out (Tensor,optional) – the output tensor.

Example:

>>>torch.ldexp(torch.tensor([1.]),torch.tensor([1]))tensor([2.])>>>torch.ldexp(torch.tensor([1.0]),torch.tensor([1,2,3,4]))tensor([ 2.,  4.,  8., 16.])