Betax Betaxc Ibeta Ibetac Ibetaci Ibetacia Ibetacib Ibetad Ibetai Ibetaia Ibetaib

Betax() Function Betax ( A As  Double, B As  Double, X As  Double, Optional Info As  Long  ) Incomplete beta function Bx(a, b) Purpose This routine computes the incomplete beta function Bx(a, b) = ∫t^(a-1)*(1-t)^(b-1) dt [0, x] Returns Double Incomplete beta function Bx(a, b). Parameters [in] A Argument a. (A > 0) [in] B Argument b. (B > 0) [in] X Argument x. (0 <= X <= 1) [out] Info (Optional) = 0: Successful exit. = -1: The argument A had an illegal value. (A <= 0) = -2: The argument B had an illegal value. (B <= 0) = -3: The argument X had an illegal value. (X < 0 or X > 1) = 1: Floating point range error. Reference boost/math/special_functions