| #### D.12.2.5 CornacchiaModified Procedure from library `atkins.lib` (see atkins_lib). Usage: CornacchiaModified(D,p); Return: x,y such that x^2+|D|*y^2=p with p prime, -1, if the Diophantine equation has no solution, 0, if the parameters are wrong selected Assume: D<0, D kongruent 0 or 1 modulo 4 and |D|<4p Example:
    LIB "atkins.lib";
    CornacchiaModified(-107,1319);
    ==> [1]:
    ==>    51
    ==> [2]:
    ==>    5

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