• Algorithm 858

  • Referenced in 13 articles [sw09120]
  • with Jνi(x) the Bessel function of the first kind and (real) order ... integral can be approximated using the incomplete Gamma function Γ(a,z). Accurate error estimates...
  • Algorithm 542

  • Referenced in 7 articles [sw22830]
  • Algorithm 542: Incomplete Gamma functions. Taylor’s series and continued fractions for evaluating Tricomi ... incomplete gamma function and the complementary incomplete gamma function Gams...
  • Algorithm 926

  • Referenced in 4 articles [sw12901]
  • Algorithm 926, incomplete gamma functions with negative arguments. An algorithm for accurately computing the lower ... incomplete gamma function γ(a,t) in the case where...
  • IncgamNEG

  • Referenced in 3 articles [sw16456]
  • Algorithm 969: Computation of the Incomplete Gamma Function for Negative Values of the Argument ... algorithm for computing the incomplete gamma function γ*(a, z) for real values...
  • Algorithm 955

  • Referenced in 3 articles [sw17442]
  • approximations for the inverse of the incomplete gamma function are derived, which are used ... evaluations of the inverse Poisson cumulative distribution function. An asymptotic approximation based on the standard ... Temme’s approximation of the incomplete gamma function is more efficient due to conditional branching...
  • GRATIO

  • Referenced in 3 articles [sw24353]
  • FORTRAN subroutines for computing the incomplete gamma function ratios and their inverse. The FORTRAN subroutines ... computing the incomplete gamma function ratios and their inverse. A sample program exercising GRATIO...
  • ncg

  • Referenced in 3 articles [sw12413]
  • inverse and the noncentrality parameter. The noncentral gamma distribution can be viewed as a generalization ... Poisson density function with a incomplete gamma function. The noncentral gamma distribution is not available ... propose an algorithm for the noncentral gamma by combining the method originally proposed ... function, density function, quantiles and noncentrality parameter of the noncentral incomplete gamma and its particular...
  • GAMINV

  • Referenced in 2 articles [sw24354]
  • FORTRAN subroutines for computing the incomplete gamma function ratios and their inverse. The FORTRAN subroutines ... computing the incomplete gamma function ratios and their inverse. A sample program exercising GRATIO...
  • Algorithm 1006

  • Referenced in 1 article [sw35939]
  • accurate evaluation of a generalized incomplete gamma function. We present a computational procedure to evaluate ... lower (x=0) and upper (y=+∞) incomplete gamma functions. To allow for large values ... complete gamma function. The generalized incomplete gamma function is estimated with continued fractions, with integrations...
  • JRAF

  • Referenced in 1 article [sw38331]
  • functions with non-integer exponents and incomplete gamma functions. The computer program package to calculate...
  • IRTDIF

  • Referenced in 1 article [sw37277]
  • Computer Program for IRT Differential Item Functioning Analysis. RT models. To compute the DIF measures ... compute the percentage points of the incomplete gamma functions. Execution of the program requires...
  • ANSYS

  • Referenced in 663 articles [sw00044]
  • ANSYS offers a comprehensive software suite that spans...
  • GAP

  • Referenced in 2948 articles [sw00320]
  • GAP is a system for computational discrete algebra...
  • KNITRO

  • Referenced in 180 articles [sw00490]
  • KNITRO is a solver for nonlinear optimization. It...
  • MACHAR

  • Referenced in 22 articles [sw00539]
  • Algorithm 665: Machar: a subroutine to dynamically determined...
  • Maple

  • Referenced in 5168 articles [sw00545]
  • The result of over 30 years of cutting...
  • Mathematica

  • Referenced in 6041 articles [sw00554]
  • Almost any workflow involves computing results, and that...
  • Matlab

  • Referenced in 12477 articles [sw00558]
  • MATLAB® is a high-level language and interactive...
  • Maxima

  • Referenced in 154 articles [sw00560]
  • Maxima is a system for the manipulation of...