XLPack 6.0
Excel VBA Numerical Library Reference Manual
Loading...
Searching...
No Matches

◆ Gammaqi()

Function Gammaqi ( A As  Double,
Q As  Double,
Optional Info As  Long 
)

Inverse function of x for normalized complementary incomplete gamma function Q(a, x)

Purpose
This routine computes the inverse function of x for normalized complementary incomplete gamma function Q(a, x).
Returns
Double
Inverse function of x for normalized complementary incomplete gamma function Q(a, x).
Parameters
[in]AArgument a. (A > 0)
[in]QArgument q. (0 <= Q <= 1)
[out]Info= 0: Successful exit.
= -1: The argument A had an illegal value. (A <= 0)
= -2: The argument Q had an illegal value. (Q < 0 or Q > 1)
= 1: Floating point range error.
Reference
boost/math/special_functions