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• fe_neg.java

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org.whispersystems.curve25519.java.fe_neg Maven / Gradle / Ivy

package org.whispersystems.curve25519.java;

public class fe_neg {

//CONVERT #include "fe.h"

/*
h = -f

Preconditions:
   |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.

Postconditions:
   |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
*/

public static void fe_neg(int[] h,int[] f)
{
  int f0 = f[0];
  int f1 = f[1];
  int f2 = f[2];
  int f3 = f[3];
  int f4 = f[4];
  int f5 = f[5];
  int f6 = f[6];
  int f7 = f[7];
  int f8 = f[8];
  int f9 = f[9];
  int h0 = -f0;
  int h1 = -f1;
  int h2 = -f2;
  int h3 = -f3;
  int h4 = -f4;
  int h5 = -f5;
  int h6 = -f6;
  int h7 = -f7;
  int h8 = -f8;
  int h9 = -f9;
  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;
}


}