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| KASH3 Reference Manual

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### Function

Xgcd ( elt-ord^rat x, elt-ord^rat y ) -> elt-ord^rat, elt-ord^rat, elt-ord^rat

### Optional Arguments

Results | elt-ord^rat |  | 1 <= Results <= 3

### Description

<shortdoc> Extended GCD: return the GCD g of x and y, together with the cofactors a and b such that g = a*x + b*y. </shortdoc>

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