The remaining arguments are interpreted as options.

digits=n

Set Digits := n; for the purpose of the calculation. Thus the accuracy of the zeros computed is usually less than n digits since only n digits is used for the calculation. The default is the value of Digits already set by the user; the minimum is 5. If hardware floats are in use, this default may be increased to a maximum of trunc(evalhf(Digits)).

iterations=n

The number of iterations of Newton's method to be applied for each starting point. The default is 50.

continue

Continue with an interrupted calculation, remembering already found zeros. This option may also be used to change the boundaries of the region without losing already found zeros. This option may only be used with the same function and variable as the original call.

plot

Return a plot of the zeros instead of the zeros. Note, the zeros are still available to the user through the command RootFinding:-AnalyticZerosFound(), and are available until the routine RootFinding:-Analytic is once again used.

 and

When plotting, the zeros will be reduced modulo  in the real direction and modulo  in the imaginary direction. With the option 'modulo' they will be reduced to the region  and ; With 'modulo_s' they will be reduced to the region , .

extra

For plotting purposes, remember the rectangular subregions in which the zeros were isolated, as well as the traces of the Newton iterations. These will appear when the zeros are plotted.

viewall

For plotting purposes, view the entire specified region. Do not restrict the viewing region to the area where zeros are found.