tf.math.igamma
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Compute the lower regularized incomplete Gamma function P(a, x).
tf.math.igamma(
a, x, name=None
)
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) (Igammac) is the upper regularized complete
Gamma function.
Args |
|---|
a
|
A Tensor. Must be one of the following types: bfloat16, half, float32, float64.
|
x
|
A Tensor. Must have the same type as a.
|
name
|
A name for the operation (optional).
|
Returns |
|---|
A Tensor. Has the same type as a.
|
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[],[],null,["# tf.math.igamma\n\nCompute the lower regularized incomplete Gamma function `P(a, x)`.\n\n#### View aliases\n\n\n**Compat aliases for migration**\n\nSee\n[Migration guide](https://www.tensorflow.org/guide/migrate) for\nmore details.\n\n[`tf.compat.v1.igamma`](https://www.tensorflow.org/api_docs/python/tf/math/igamma), [`tf.compat.v1.math.igamma`](https://www.tensorflow.org/api_docs/python/tf/math/igamma)\n\n\u003cbr /\u003e\n\n tf.math.igamma(\n a, x, name=None\n )\n\nThe lower regularized incomplete Gamma function is defined as:\n\n\\\\(P(a, x) = gamma(a, x) / Gamma(a) = 1 - Q(a, x)\\\\)\n\nwhere\n\n\\\\(gamma(a, x) = \\\\\\\\int_{0}\\^{x} t\\^{a-1} exp(-t) dt\\\\)\n\nis the lower incomplete Gamma function.\n\nNote, above `Q(a, x)` (`Igammac`) is the upper regularized complete\nGamma function.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Args ---- ||\n|--------|-------------------------------------------------------------------------------------------|\n| `a` | A `Tensor`. Must be one of the following types: `bfloat16`, `half`, `float32`, `float64`. |\n| `x` | A `Tensor`. Must have the same type as `a`. |\n| `name` | A name for the operation (optional). |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Returns ------- ||\n|---|---|\n| A `Tensor`. Has the same type as `a`. ||\n\n\u003cbr /\u003e"]]
