ASA063
the Incomplete Beta Function

ASA063 is a MATLAB program which evaluates the incomplete Beta function.

ASA063 is Applied Statistics Algorithm 63. Source code for many Applied Statistics Algorithms is available through STATLIB.

Related Data and Programs:

ASA063 is also available in a C++ version and a FORTRAN77 version and a FORTRAN version.

ASA109 is a MATLAB library which inverts the incomplete Beta function.

ASA226 is a MATLAB library which evaluates the CDF of the noncentral Beta distribution.

BETA_NC is a FORTRAN90 library which evaluates the CDF of the noncentral Beta distribution.

TEST_VALUES is a MATLAB library which stores a few values of various mathematical functions.

TOMS179 is a FORTRAN90 library which evaluates the incomplete Beta function.

TOMS708 is a FORTRAN90 library which evaluates the incomplete Beta function.

Reference:

1. KL Majumder, GP Bhattacharjee,
   Algorithm AS 63: The incomplete Beta Integral,
   Applied Statistics,
   Volume 22, Number 3, 1973, pages 409-411.

Source Code:

• alogam.m computes the logarithm of the Gamma function.
• beta_inc_values.m returns some values of the incomplete Beta function.
• betain.m computes the incomplete Beta function ratio.
• timestamp.m prints out the current YMDHMS date as a timestamp.

Examples and Tests:

• asa063_test.m, a sample calling program.
• asa063_test01.m, tests BETAIN.
• asa063_test_output.txt, the output file.

You can go up one level to the MATLAB source codes.