XLPack 7.0
XLPack Numerical Library (Excel VBA) Reference Manual
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◆ Rc_sub()

Sub Rc_sub ( Ret As  Double,
X As  Double,
Y As  Double,
Optional Info As  Long 
)

Carlson form of elliptic integral RC(x, y) (Subroutine version)

Purpose
Computes the Carlson form of elliptic integral RC(x, y).
RC(x, y) = (1/2) * ∫ (t + x)^(-1/2)(t + y)^(-1) dt [0, ∞]
For negative second argument y, the principal value will be computed.
Parameters
[out]RetCarlson form of elliptic integral RC(x, y).
[in]XArgument x. (X >= 0)
[in]YArgument y. (Y <> 0)
[out]Info(Optional)
= 0: Successful exit.
= -1: The argument X had an illegal value. (X < 0)
= -2: The argument Y had an illegal value. (Y = 0)
= 1: Floating point range error.
Reference
boost/math/special_functions