package im.actor.runtime.crypto.primitives.curve25519;
// Disabling Bounds checks for speeding up calculations
/*-[
#define J2OBJC_DISABLE_ARRAY_BOUND_CHECKS 1
]-*/
public class fe_isnegative {
//CONVERT #include "fe.h"
/*
return 1 if f is in {1,3,5,...,q-2}
return 0 if f is in {0,2,4,...,q-1}
Preconditions:
|f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
*/
public static int fe_isnegative(int[] f) {
byte[] s = new byte[32];
fe_tobytes.fe_tobytes(s, f);
return s[0] & 1;
}
}