beta cbeta cbeta_sub clbeta clbeta_sub lbeta

beta() double beta ( double  a, double  b  ) Beta function B(a, b) Purpose beta computes the beta function at a and b. B(a, b) = Γ(a)Γ(b)/Γ(a + b) Returns Beta function B(a, b). Parameters [in] a Argument a. (a > 0) [in] b Argument b. (b > 0) Error handling If a <= 0 or b <= 0, domain error (EDOM) occurs. Range error (ERANGE) may occur. Reference boost/math/special_functions