C7a. Gamma functions

Functions
Function	Cgamma (Z As Complex, Optional Info As Long) As Complex
	Gamma function Γ(z) (complex argument)
Function	Cgamr (Z As Complex, Optional Info As Long) As Complex
	Reciprocal of gamma function 1/Γ(z) (complex argument)
Function	Clngam (Z As Complex, Optional Info As Long) As Complex
	Logarithm of gamma function ln(Γ(z)) (complex argument)
Function	Gamdratio (A As Double, Delta As Double, Optional Info As Long) As Double
	Ratio of gamma functions Γ(a)/Γ(a + δ)
Function	Gamma (X As Double, Optional Info As Long) As Double
	Gamma function Γ(x)
Function	Gamma1pm1 (X As Double, Optional Info As Long) As Double
	Gamma function Γ(1+x) - 1
Function	Gamr (X As Double, Optional Info As Long) As Double
	Reciprocal of gamma function 1/Γ(x)
Function	Gamratio (A As Double, B As Double, Optional Info As Long) As Double
	Ratio of gamma functions Γ(a)/Γ(b)
Function	Lngam (X As Double, Optional Info As Long) As Double
	Logarithm of gamma function ln(Γ(x))
Function	Lngams (X As Double, Sign As Long, Optional Info As Long) As Double
	Logarithm of gamma function ln|Γ(x)| and sign of gamma function
Function	Poch (A As Double, X As Double, Optional Info As Long) As Double
	Pochhammer's symbol (a)x
Function	Poch1 (A As Double, X As Double, Optional Info As Long) As Double
	Relative Pochhammer's symbol ((a)x - 1)/x
Sub	Gamdratio_sub (Ret As Double, A As Double, Delta As Double, Optional Info As Long)
	Ratio of gamma functions Γ(a)/Γ(a + δ) (Subroutine version)
Sub	Gamma1pm1_sub (Ret As Double, X As Double, Optional Info As Long)
	Gamma function Γ(1+x) - 1 (Subroutine version)
Sub	Gamr_sub (Ret As Double, X As Double, Optional Info As Long)
	Reciprocal of gamma function 1/Γ(x) (Subroutine version)
Sub	Gamratio_sub (Ret As Double, A As Double, B As Double, Optional Info As Long)
	Ratio of gamma functions Γ(a)/Γ(b) (Subroutine version)
Sub	Lngam_sub (Ret As Double, X As Double, Optional Info As Long)
	Logarithm of gamma function ln(Γ(x)) (Subroutine version)
Sub	Lngams_sub (Ret As Double, X As Double, Sign As Long, Optional Info As Long)
	Logarithm of gamma function ln|Γ(x)| and sign of gamma function (Subroutine version)
Sub	Poch1_sub (Ret As Double, A As Double, X As Double, Optional Info As Long)
	Relative Pochhammer's symbol ((a)x - 1)/x (Subroutine version)
Sub	Poch_sub (Ret As Double, A As Double, X As Double, Optional Info As Long)
	Pochhammer's symbol (a)x (Subroutine version)

Detailed Description

This is the group of C7a. Gamma functions.