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精准四面体,精准求积四面体,精准四面体考察对于一个三维(3D)四面体内部的, 
精准求积规则的多项式的精准度.最高度数,如x2yz5的总度数是8. 
(TETRAHEDRON_EXACTNESS, Investigate the polynomial exactness of a quadrature 
  rule for a tetrahedron by integrating all monomials 
  of a given degree.The rule will be adjusted to the unit tetrahedron.) 
 用户输入: User input: 
  W file = "_w.txt". 
  X file = "_x.txt". 
  R file = "_r.txt". 
  Maximum total degree to check =        0 
At line 351 of file main.f95 (unit = 1) 
Fortran runtime error: Cannot open file '_x.txt': No such file or directory 
Error termination. Backtrace: 
#0  0x7f6941db9d5a 
#1  0x7f6941dba869 
......... 
#11  0xffffffffffffffff 
...Program finished with exit code 0 
Press ENTER to exit console. 
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程序运行如上. 
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已经有这些数据文档: 
W file = "_w.txt". 
  X file = "_x.txt". 
  R file = "_r.txt". 
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程序中相关读入数据指令: 
...... 
             call get_unit ( input_unit ) 
                open ( unit = input_unit, file = input_filename, & 
#351          status = 'old', form = 'formatted', access = 'sequential' ) 
              got_one = .false. 
         10    continue 
........ 
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求助盼复, 谢谢老师! 
   2021-12-28 
 
 
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