Returns the regularized gamma function P(a, x).

Parameters

a

The a parameter.

x

The value.

Return Value

The regularized gamma function P(a, x).

Remarks

The implementation of this method is based on:

• Regularized Gamma Function, equation (1).
• Incomplete Gamma Function, equation (4).
• Confluent Hypergeometric Function of the First Kind, equation (1).

See Also

Gamma Class | numerics4net.special Namespace