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CCN_RULE_TEST
  MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2.
  Test CCN_RULE.
07-Jan-2022 17:58:04

ccn_rule():
  MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2

  Compute a nested Clenshaw Curtis rule for approximating
    Integral ( A <= x <= B ) f(x) dx
  of order N.

  The user specifies N, A, B, and FILENAME.

  N is the number of points:
  A is the left endpoint;
  B is the right endpoint;
  FILENAME is used to generate 3 files:

    filename_w.txt - the weight file
    filename_x.txt - the abscissa file.
    filename_r.txt - the region file.

  N = 9
  A = -1.000000
  B = 1.000000
  FILENAME = "ccn_o9".

  Creating quadrature files.

  "Root" file name is   "ccn_o9".

  Weight file will be   "ccn_o9_w.txt".
  Abscissa file will be "ccn_o9_x.txt".
  Region file will be   "ccn_o9_r.txt".

CCN_RULE:
  Normal end of execution.

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CCN_RULE_TEST
  Normal end of execution.

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