This function evaluates the derivative of the Airy function of the second kind.
Function Return Value
BID — Function value. (Output)
Required Arguments
X — Argument for which the Airy function value is desired. (Input)
FORTRAN 90 Interface
Generic: BID (X)
Specific: The specific interface names are S_BID and D_BID.
FORTRAN 77 Interface
Single: BID (X)
Double: The double precision name is DBID.
Description
The function Biʹ(x) is defined to be the derivative of the Airy function of the second kind, Bi(x) (see BI).
If , then the answer will have no precision. If , the answer will be less accurate than half precision. In addition, x should not be so large that overflows. If overflows are a problem, consider using BIDE instead. Here, ɛ = AMACH(4) is the machine precision.
Example
In this example, Biʹ (–4.9) is computed and printed.
