Gami Gami_sub Gamic Gamic_sub Gamit Gamit_sub Gammap Gammap_sub Gammapd Gammapd_sub Gammapi Gammapi_sub Gammapia Gammapia_sub Gammaq Gammaq_sub Gammaqi Gammaqi_sub Gammaqia Gammaqia_sub

Gammapia() Function Gammapia ( X As  Double, P As  Double, Optional Info As  Long  ) Inverse function of a for normalized incomplete gamma function P(a, x) Purpose Computes the inverse function of a for normalized incomplete gamma function P(a, x). Returns Double Inverse function of a for normalized incomplete gamma function P(a, x). Parameters [in] X Argument x. (X > 0) [in] P Argument p. (0 <= P <= 1) [out] Info = 0: Successful exit. = -1: The argument X had an illegal value. (X <= 0) = -2: The argument P had an illegal value. (P < 0 or P > 1) = 1: Floating point range error. Reference boost/math/special_functions