# 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/r2.5/api_docs/cc/class/tensorflow/ops/igammac#classtensorflow_1_1ops_1_1_igammac
`
) is the upper regularized complete Gamma function.


Args:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object

<br />


Returns:

- `
  https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output
  ` : The z tensor.

<br />

| ### Constructors and Destructors ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a47205e45e27ebe1d6b09daa45618933e (const :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input a, :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input x) ` ||

| ### Public attributes ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a7ecd61ef0529d2ef62c4a2e05c6b986f ` | ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation ` |
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1aad97283f8f589ba0dcfc5538303d1cdc ` | ` :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output ` |

| ### Public functions ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a87a26af93233752dce42b1dc9ed62061 () const ` | ` ::tensorflow::Node * ` |
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/igamma#classtensorflow_1_1ops_1_1_igamma_1a8a071a0a661ec682e3cc7ec25468448b () const ` | ` ` |
| ` https://www.tensorflow.org/versions/r2.5/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 
```