// 
// Decompiled by Procyon v0.6.0
// 

package org.bouncycastle.pqc.crypto.mldsa;

import org.bouncycastle.util.Arrays;

class Ntt
{
    static final int[] nttZetas;
    
    static int[] ntt(final int[] array) {
        final int[] copyOfRange = Arrays.copyOfRange(array, 0, array.length);
        int n = 0;
        for (int i = 128; i > 0; i >>>= 1) {
            int k;
            for (int j = 0; j < 256; j = k + i) {
                final int n2 = Ntt.nttZetas[++n];
                for (k = j; k < j + i; ++k) {
                    final int montgomeryReduce = Reduce.montgomeryReduce(n2 * (long)copyOfRange[k + i]);
                    copyOfRange[k + i] = copyOfRange[k] - montgomeryReduce;
                    copyOfRange[k] += montgomeryReduce;
                }
            }
        }
        return copyOfRange;
    }
    
    static int[] invNttToMont(final int[] array) {
        final int[] copyOfRange = Arrays.copyOfRange(array, 0, array.length);
        int n = 256;
        for (int i = 1; i < 256; i <<= 1) {
            int k;
            for (int j = 0; j < 256; j = k + i) {
                final int n2 = -1 * Ntt.nttZetas[--n];
                for (k = j; k < j + i; ++k) {
                    final int n3 = copyOfRange[k];
                    copyOfRange[k] = n3 + copyOfRange[k + i];
                    copyOfRange[k + i] = n3 - copyOfRange[k + i];
                    copyOfRange[k + i] = Reduce.montgomeryReduce(n2 * (long)copyOfRange[k + i]);
                }
            }
        }
        for (int l = 0; l < 256; ++l) {
            copyOfRange[l] = Reduce.montgomeryReduce(41978L * copyOfRange[l]);
        }
        return copyOfRange;
    }
    
    static {
        nttZetas = new int[] { 0, 25847, -2608894, -518909, 237124, -777960, -876248, 466468, 1826347, 2353451, -359251, -2091905, 3119733, -2884855, 3111497, 2680103, 2725464, 1024112, -1079900, 3585928, -549488, -1119584, 2619752, -2108549, -2118186, -3859737, -1399561, -3277672, 1757237, -19422, 4010497, 280005, 2706023, 95776, 3077325, 3530437, -1661693, -3592148, -2537516, 3915439, -3861115, -3043716, 3574422, -2867647, 3539968, -300467, 2348700, -539299, -1699267, -1643818, 3505694, -3821735, 3507263, -2140649, -1600420, 3699596, 811944, 531354, 954230, 3881043, 3900724, -2556880, 2071892, -2797779, -3930395, -1528703, -3677745, -3041255, -1452451, 3475950, 2176455, -1585221, -1257611, 1939314, -4083598, -1000202, -3190144, -3157330, -3632928, 126922, 3412210, -983419, 2147896, 2715295, -2967645, -3693493, -411027, -2477047, -671102, -1228525, -22981, -1308169, -381987, 1349076, 1852771, -1430430, -3343383, 264944, 508951, 3097992, 44288, -1100098, 904516, 3958618, -3724342, -8578, 1653064, -3249728, 2389356, -210977, 759969, -1316856, 189548, -3553272, 3159746, -1851402, -2409325, -177440, 1315589, 1341330, 1285669, -1584928, -812732, -1439742, -3019102, -3881060, -3628969, 3839961, 2091667, 3407706, 2316500, 3817976, -3342478, 2244091, -2446433, -3562462, 266997, 2434439, -1235728, 3513181, -3520352, -3759364, -1197226, -3193378, 900702, 1859098, 909542, 819034, 495491, -1613174, -43260, -522500, -655327, -3122442, 2031748, 3207046, -3556995, -525098, -768622, -3595838, 342297, 286988, -2437823, 4108315, 3437287, -3342277, 1735879, 203044, 2842341, 2691481, -2590150, 1265009, 4055324, 1247620, 2486353, 1595974, -3767016, 1250494, 2635921, -3548272, -2994039, 1869119, 1903435, -1050970, -1333058, 1237275, -3318210, -1430225, -451100, 1312455, 3306115, -1962642, -1279661, 1917081, -2546312, -1374803, 1500165, 777191, 2235880, 3406031, -542412, -2831860, -1671176, -1846953, -2584293, -3724270, 594136, -3776993, -2013608, 2432395, 2454455, -164721, 1957272, 3369112, 185531, -1207385, -3183426, 162844, 1616392, 3014001, 810149, 1652634, -3694233, -1799107, -3038916, 3523897, 3866901, 269760, 2213111, -975884, 1717735, 472078, -426683, 1723600, -1803090, 1910376, -1667432, -1104333, -260646, -3833893, -2939036, -2235985, -420899, -2286327, 183443, -976891, 1612842, -3545687, -554416, 3919660, -48306, -1362209, 3937738, 1400424, -846154, 1976782 };
    }
}