Gamma |
Name | Description | |
---|---|---|
GammaIT(Double, Double) | GammaIT(x,a) evaluates Tricomi's incomplete gamma function defined by GammaIT = x**(-a)/Gamma(a) * integral from 0 to x of exp(-t) * t**(a-1.0) for a > 0.0 and by analytic continuation for a <= 0.0. Gamma(x) is the complete gamma function of x. | |
GammaIT(Double, Double, Boolean) | GammaIT(x,a) evaluates Tricomi's incomplete gamma function defined by GammaIT = x**(-a)/Gamma(a) * integral from 0 to x of exp(-t) * t**(a-1.0) for a > 0.0 and by analytic continuation for a <= 0.0. Gamma(x) is the complete gamma function of x. |