Task

Write two equal-sized numerical arrays 'x' and 'y' to
a two-column text file named 'filename'.

The first column of the file contains values from an 'x'-array with a
given 'xprecision', the second -- values from 'y'-array with 'yprecision'.

For example, considering:

   x = {1, 2, 3, 1e11};
   y = {1, 1.4142135623730951, 1.7320508075688772, 316227.76601683791}; 
                                                          /* sqrt(x) */
   xprecision = 3;
   yprecision = 5;

The file should look like:

   1    1
   2    1.4142
   3    1.7321
   1e+011   3.1623e+005

This task is intended as a subtask for Measure relative performance of sorting algorithms implementations.




on saveFloatLists (filename, x, y, xprecision, yprecision)
  eol = numtochar(10) -- LF
  fp = xtra("fileIO").new()
  fp.openFile(tFile, 2)
  cnt = x.count
  repeat with i = 1 to cnt
    the floatPrecision = xprecision
    fp.writeString(string(x[i])
    fp.writeString(TAB)
    the floatPrecision = yprecision
    fp.writeString(string(y[i])
    fp.writeString(eol)
  end repeat
  fp.closeFile()
end