ZeroTierOne/ext/ed25519-amd64-asm/sc25519_iszero.c

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#include "sc25519.h"
int sc25519_iszero_vartime(const sc25519 *x)
{
if(x->v[0] != 0) return 0;
if(x->v[1] != 0) return 0;
if(x->v[2] != 0) return 0;
if(x->v[3] != 0) return 0;
return 1;
}