_betax _betaxc _ibeta _ibetac _ibetaci _ibetacia _ibetacib _ibetad _ibetai _ibetaia _ibetaib

_ibetaib() double _ibetaib ( double  a, double  x, double  p  ) Normalized incomplete beta function Ix(a, b) inverse for b Purpose ibetaib returns a value b such that p = Ix(a, b), where p is the specified value of the normalized incomplete beta function. Returns Value of b. Parameters [in] a Argument a. (a > 0) [in] x Argument x. (0 < x < 1) [in] p Specified value of normalized incomplete beta function. (0 <= p <= 1) Error handling If a <= 0, x <= 0, x >= 1, p < 0 or p > 1, domain error (EDOM) occurs. Range error (ERANGE) may occur. Reference boost/math/special_functions