| 5 | import org.bouncycastle.util.Pack; |
| 6 | |
| 7 | public abstract class Nat128 |
| 8 | { |
| 9 | private static final long M = 0xFFFFFFFFL; |
| 10 | |
| 11 | public static int add(int[] x, int[] y, int[] z) |
| 12 | { |
| 13 | long c = 0; |
| 14 | c += (x[0] & M) + (y[0] & M); |
| 15 | z[0] = (int)c; |
| 16 | c >>>= 32; |
| 17 | c += (x[1] & M) + (y[1] & M); |
| 18 | z[1] = (int)c; |
| 19 | c >>>= 32; |
| 20 | c += (x[2] & M) + (y[2] & M); |
| 21 | z[2] = (int)c; |
| 22 | c >>>= 32; |
| 23 | c += (x[3] & M) + (y[3] & M); |
| 24 | z[3] = (int)c; |
| 25 | c >>>= 32; |
| 26 | return (int)c; |
| 27 | } |
| 28 | |
| 29 | public static int addBothTo(int[] x, int[] y, int[] z) |
| 30 | { |
| 31 | long c = 0; |
| 32 | c += (x[0] & M) + (y[0] & M) + (z[0] & M); |
| 33 | z[0] = (int)c; |
| 34 | c >>>= 32; |
| 35 | c += (x[1] & M) + (y[1] & M) + (z[1] & M); |
| 36 | z[1] = (int)c; |
| 37 | c >>>= 32; |
| 38 | c += (x[2] & M) + (y[2] & M) + (z[2] & M); |
| 39 | z[2] = (int)c; |
| 40 | c >>>= 32; |
| 41 | c += (x[3] & M) + (y[3] & M) + (z[3] & M); |
| 42 | z[3] = (int)c; |
| 43 | c >>>= 32; |
| 44 | return (int)c; |
| 45 | } |
| 46 | |
| 47 | public static int addTo(int[] x, int[] z) |
| 48 | { |
| 49 | long c = 0; |
| 50 | c += (x[0] & M) + (z[0] & M); |
| 51 | z[0] = (int)c; |
| 52 | c >>>= 32; |
| 53 | c += (x[1] & M) + (z[1] & M); |
| 54 | z[1] = (int)c; |
| 55 | c >>>= 32; |
| 56 | c += (x[2] & M) + (z[2] & M); |
| 57 | z[2] = (int)c; |
| 58 | c >>>= 32; |
| 59 | c += (x[3] & M) + (z[3] & M); |
| 60 | z[3] = (int)c; |
| 61 | c >>>= 32; |
| 62 | return (int)c; |
| 63 | } |
| 64 |
nothing calls this directly
no outgoing calls
no test coverage detected