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torch.Tensor.Tensor.float_power

Tensor.float_power(exponent: number): Tensor<S, D, Dev>Tensor.float_power<O extends Shape>(exponent: Tensor<O>): Tensor<DynamicShape, D, Dev>

Raises this tensor to the power of exponent element-wise, with results always in floating-point.

Computes self^exponent, promoting the result to floating-point. Unlike pow(), float_power always returns a float tensor even for integer inputs. Useful for:

  • Exponentiation when float results are guaranteed
  • Operations like computing x^0.5 (square root) on integers
  • Avoiding integer overflow in power operations
  • Consistent floating-point output regardless of input type
y=xexponenty = x^{\text{exponent}}y=xexponent
  • Always returns float tensor, even for integer inputs
  • When exponent is a tensor, it must have compatible shape with this tensor

Parameters

exponentnumber
The exponent (scalar or tensor)

Returns

Tensor<S, D, Dev>– Tensor with element-wise self^exponent in floating-point

Examples

const x = torch.tensor([1, 2, 3, 4]);
const y = torch.tensor([2, 2, 2, 2]);
x.float_power(y);  // [1.0, 4.0, 9.0, 16.0]

// With scalar exponent
x.float_power(0.5);  // [1.0, 1.414..., 1.732..., 2.0]

// Fractional exponents
const bases = torch.tensor([8, 27, 64]);
bases.float_power(1/3);  // [2.0, 3.0, 4.0] (cube roots)

See Also

  • PyTorch torch.float_power()
  • pow - Similar operation (may return integers for integer inputs)
  • sqrt - Optimized square root
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