[Term Entry] PyTorch Tensor Operations: .erfc()

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Author: AtulDeshpande09

content/pytorch/concepts/tensor-operations/terms/erfc/erfc.md

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+---
+Title: '.erfc()'
+Description: 'Computes the complementary error function of input.'
+Subjects:
+  - 'Computer Science'
+  - 'Machine Learning'
+Tags:
+  - 'Functions'
+  - 'Machine Learning'
+  - 'Python'
+  - 'Tensor'
+CatalogContent:
+  - 'intro-to-py-torch-and-neural-networks'
+  - 'paths/computer-science'
+---
+
+In PyTorch, the **`.erfc()`** function returns the complementary error function of of each element in the input [tensor](https://www.codecademy.com/resources/docs/pytorch/tensors). The complementary error function is written as:
+
+$$erfc(x)= 1 - \frac{2}{\sqrt{\pi}}\int_0^1 e^{-t^2} dt$$
+
+## Syntax
+
+```pseudo
+torch.erfc(input, *, out=None) → Tensor
+```
+
+Or,
+
+```pseudo
+torch.special.erfc(input, *, out=None) → Tensor
+```
+
+**Parameters:**
+
+- `input`: The input tensor.
+- `out` (Optional): A tensor to store the output. If provided, the result is written to this tensor.
+
+**Return value:**
+
+It returns a new tensor of the same shape as the input, containing the computed complementary error function values for each corresponding element.
+
+## Example
+
+In this example, we compute the complementary error function values of each tensor using `.erfc()`:
+
+```py
+import torch
+
+# Define a tensor
+x = torch.tensor([0, -1., 10.])
+
+result = torch.erfc(x)
+
+print(result)
+```
+
+The output of this code is:
+
+```shell
+tensor([1.0000e+00, 1.8427e+00, 1.4013e-45])
+```