# tensorflow::ops::Igamma Class Reference

# tensorflow::ops::Igamma

`#include <math_ops.h>`

Compute the lower regularized incomplete Gamma function `P(a, x)`.

## Summary

The lower regularized incomplete Gamma function is defined as:

\\(P(a, x) = gamma(a, x) / Gamma(a) = 1 - Q(a, x)\\)

where

\\(gamma(a, x) = \\int_{0}\^{x} t\^{a-1} exp(-t) dt\\)

is the lower incomplete Gamma function.

Note, above `Q(a, x)` (`https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igammac#classtensorflow_1_1ops_1_1_igammac`) is the upper regularized complete Gamma function.

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: The z tensor.

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a47205e45e27ebe1d6b09daa45618933e(const ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input a, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input x)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a7ecd61ef0529d2ef62c4a2e05c6b986f` | `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1aad97283f8f589ba0dcfc5538303d1cdc` | `::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a87a26af93233752dce42b1dc9ed62061() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a8a071a0a661ec682e3cc7ec25468448b() const ` | ` `` ` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1acc62c783eaf94fd7f02da5a09e5248da() const ` | ` `` ` |

## Public attributes

### operation

```
Operation operation
```

### z

```
::tensorflow::Output z
```

## Public functions

### Igamma

```
 Igamma(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input a,
  ::tensorflow::Input x
)
```

### node

```
::tensorflow::Node * node() const 
```

### operator::tensorflow::Input

```
 operator::tensorflow::Input() const 
```

### operator::tensorflow::Output

```
 operator::tensorflow::Output() const 
```