[issue457066] pow(a,b,c) should accept b<0

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[issue457066] pow(a,b,c) should accept b<0

Thomas Dybdahl Ahle added the comment: For anyone who finds this through google, if you are finding the inverse mod a prime, you can use fermats little theorem: pow(a, -1, mod) = pow(a, a-2, mod). (You also need that mod doesn't divide a). -- nosy: +Thomas.Dybdahl.Ahle ___