in src/main/java/org/mariadb/jdbc/internal/com/send/authentication/ed25519/math/ed25519/Ed25519FieldElement.java [460:622]
public FieldElement square() {
int f0 = t[0];
int f1 = t[1];
int f2 = t[2];
int f3 = t[3];
int f4 = t[4];
int f5 = t[5];
int f6 = t[6];
int f7 = t[7];
int f8 = t[8];
int f9 = t[9];
int f0_2 = 2 * f0;
int f1_2 = 2 * f1;
int f2_2 = 2 * f2;
int f3_2 = 2 * f3;
int f4_2 = 2 * f4;
int f5_2 = 2 * f5;
int f6_2 = 2 * f6;
int f7_2 = 2 * f7;
int f5_38 = 38 * f5; /* 1.959375*2^30 */
int f6_19 = 19 * f6; /* 1.959375*2^30 */
int f7_38 = 38 * f7; /* 1.959375*2^30 */
int f8_19 = 19 * f8; /* 1.959375*2^30 */
int f9_38 = 38 * f9; /* 1.959375*2^30 */
long f0f0 = f0 * (long) f0;
long f0f1_2 = f0_2 * (long) f1;
long f0f2_2 = f0_2 * (long) f2;
long f0f3_2 = f0_2 * (long) f3;
long f0f4_2 = f0_2 * (long) f4;
long f0f5_2 = f0_2 * (long) f5;
long f0f6_2 = f0_2 * (long) f6;
long f0f7_2 = f0_2 * (long) f7;
long f0f8_2 = f0_2 * (long) f8;
long f0f9_2 = f0_2 * (long) f9;
long f1f1_2 = f1_2 * (long) f1;
long f1f2_2 = f1_2 * (long) f2;
long f1f3_4 = f1_2 * (long) f3_2;
long f1f4_2 = f1_2 * (long) f4;
long f1f5_4 = f1_2 * (long) f5_2;
long f1f6_2 = f1_2 * (long) f6;
long f1f7_4 = f1_2 * (long) f7_2;
long f1f8_2 = f1_2 * (long) f8;
long f1f9_76 = f1_2 * (long) f9_38;
long f2f2 = f2 * (long) f2;
long f2f3_2 = f2_2 * (long) f3;
long f2f4_2 = f2_2 * (long) f4;
long f2f5_2 = f2_2 * (long) f5;
long f2f6_2 = f2_2 * (long) f6;
long f2f7_2 = f2_2 * (long) f7;
long f2f8_38 = f2_2 * (long) f8_19;
long f2f9_38 = f2 * (long) f9_38;
long f3f3_2 = f3_2 * (long) f3;
long f3f4_2 = f3_2 * (long) f4;
long f3f5_4 = f3_2 * (long) f5_2;
long f3f6_2 = f3_2 * (long) f6;
long f3f7_76 = f3_2 * (long) f7_38;
long f3f8_38 = f3_2 * (long) f8_19;
long f3f9_76 = f3_2 * (long) f9_38;
long f4f4 = f4 * (long) f4;
long f4f5_2 = f4_2 * (long) f5;
long f4f6_38 = f4_2 * (long) f6_19;
long f4f7_38 = f4 * (long) f7_38;
long f4f8_38 = f4_2 * (long) f8_19;
long f4f9_38 = f4 * (long) f9_38;
long f5f5_38 = f5 * (long) f5_38;
long f5f6_38 = f5_2 * (long) f6_19;
long f5f7_76 = f5_2 * (long) f7_38;
long f5f8_38 = f5_2 * (long) f8_19;
long f5f9_76 = f5_2 * (long) f9_38;
long f6f6_19 = f6 * (long) f6_19;
long f6f7_38 = f6 * (long) f7_38;
long f6f8_38 = f6_2 * (long) f8_19;
long f6f9_38 = f6 * (long) f9_38;
long f7f7_38 = f7 * (long) f7_38;
long f7f8_38 = f7_2 * (long) f8_19;
long f7f9_76 = f7_2 * (long) f9_38;
long f8f8_19 = f8 * (long) f8_19;
long f8f9_38 = f8 * (long) f9_38;
long f9f9_38 = f9 * (long) f9_38;
/**
* Same procedure as in multiply, but this time we have a higher symmetry leading to less
* summands. e.g. f1f9_76 really stands for f1 * 2^26 * f9 * 2^230 + f9 * 2^230 + f1 * 2^26
* congruent 2 * 2 * 19 * f1 * f9 2^0 modulo p.
*/
long h0 = f0f0 + f1f9_76 + f2f8_38 + f3f7_76 + f4f6_38 + f5f5_38;
long h1 = f0f1_2 + f2f9_38 + f3f8_38 + f4f7_38 + f5f6_38;
long h2 = f0f2_2 + f1f1_2 + f3f9_76 + f4f8_38 + f5f7_76 + f6f6_19;
long h3 = f0f3_2 + f1f2_2 + f4f9_38 + f5f8_38 + f6f7_38;
long h4 = f0f4_2 + f1f3_4 + f2f2 + f5f9_76 + f6f8_38 + f7f7_38;
long h5 = f0f5_2 + f1f4_2 + f2f3_2 + f6f9_38 + f7f8_38;
long h6 = f0f6_2 + f1f5_4 + f2f4_2 + f3f3_2 + f7f9_76 + f8f8_19;
long h7 = f0f7_2 + f1f6_2 + f2f5_2 + f3f4_2 + f8f9_38;
long h8 = f0f8_2 + f1f7_4 + f2f6_2 + f3f5_4 + f4f4 + f9f9_38;
long h9 = f0f9_2 + f1f8_2 + f2f7_2 + f3f6_2 + f4f5_2;
long carry0;
long carry1;
long carry2;
long carry3;
long carry4;
long carry5;
long carry6;
long carry7;
long carry8;
long carry9;
carry0 = (h0 + (long) (1 << 25)) >> 26;
h1 += carry0;
h0 -= carry0 << 26;
carry4 = (h4 + (long) (1 << 25)) >> 26;
h5 += carry4;
h4 -= carry4 << 26;
carry1 = (h1 + (long) (1 << 24)) >> 25;
h2 += carry1;
h1 -= carry1 << 25;
carry5 = (h5 + (long) (1 << 24)) >> 25;
h6 += carry5;
h5 -= carry5 << 25;
carry2 = (h2 + (long) (1 << 25)) >> 26;
h3 += carry2;
h2 -= carry2 << 26;
carry6 = (h6 + (long) (1 << 25)) >> 26;
h7 += carry6;
h6 -= carry6 << 26;
carry3 = (h3 + (long) (1 << 24)) >> 25;
h4 += carry3;
h3 -= carry3 << 25;
carry7 = (h7 + (long) (1 << 24)) >> 25;
h8 += carry7;
h7 -= carry7 << 25;
carry4 = (h4 + (long) (1 << 25)) >> 26;
h5 += carry4;
h4 -= carry4 << 26;
carry8 = (h8 + (long) (1 << 25)) >> 26;
h9 += carry8;
h8 -= carry8 << 26;
carry9 = (h9 + (long) (1 << 24)) >> 25;
h0 += carry9 * 19;
h9 -= carry9 << 25;
carry0 = (h0 + (long) (1 << 25)) >> 26;
h1 += carry0;
h0 -= carry0 << 26;
int[] h = new int[10];
h[0] = (int) h0;
h[1] = (int) h1;
h[2] = (int) h2;
h[3] = (int) h3;
h[4] = (int) h4;
h[5] = (int) h5;
h[6] = (int) h6;
h[7] = (int) h7;
h[8] = (int) h8;
h[9] = (int) h9;
return new org.mariadb.jdbc.internal.com.send.authentication.ed25519.math.ed25519
.Ed25519FieldElement(f, h);
}