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C++ mat_GF2类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中mat_GF2的典型用法代码示例。如果您正苦于以下问题:C++ mat_GF2类的具体用法?C++ mat_GF2怎么用?C++ mat_GF2使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



在下文中一共展示了mat_GF2类的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: mul_aux

static
void mul_aux(vec_GF2& x, const vec_GF2& a, const mat_GF2& B)
{
   long n = B.NumRows();
   long l = B.NumCols();

   if (n != a.length())
      Error("matrix mul: dimension mismatch");

   x.SetLength(l);
   clear(x);

   const _ntl_ulong *ap = a.rep.elts();
   _ntl_ulong a_mask = 1;

   _ntl_ulong *xp = x.rep.elts();

   long lw = (l + NTL_BITS_PER_LONG - 1)/NTL_BITS_PER_LONG;

   long i;
   for (i = 0; i < n; i++) {
      if (*ap & a_mask) {
         const _ntl_ulong *bp = B[i].rep.elts();
         long j;
         for (j = 0; j < lw; j++)
            xp[j] ^= bp[j];
      }

      a_mask <<= 1;
      if (!a_mask) {
         a_mask = 1;
         ap++;
      }
   }
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:35,代码来源:mat_GF2.c


示例2: power

void power(mat_GF2& X, const mat_GF2& A, const ZZ& e)
{
   if (A.NumRows() != A.NumCols()) Error("power: non-square matrix");

   if (e == 0) {
      ident(X, A.NumRows());
      return;
   }

   mat_GF2 T1, T2;
   long i, k;

   k = NumBits(e);
   T1 = A;

   for (i = k-2; i >= 0; i--) {
      sqr(T2, T1);
      if (bit(e, i))
         mul(T1, T2, A);
      else
         T1 = T2;
   }

   if (e < 0)
      inv(X, T1);
   else
      X = T1;
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:28,代码来源:mat_GF2.c


示例3: AddToCol

void AddToCol(mat_GF2& x, long j, const vec_GF2& a)
// add a to column j of x
// ALIAS RESTRICTION: a should not alias any row of x
{
   long n = x.NumRows();
   long m = x.NumCols();

   if (a.length() != n || j < 0 || j >= m)
      Error("AddToCol: bad args");

   long wj = j/NTL_BITS_PER_LONG;
   long bj = j - wj*NTL_BITS_PER_LONG;
   _ntl_ulong j_mask = 1UL << bj;

   const _ntl_ulong *ap = a.rep.elts();
   _ntl_ulong a_mask = 1;

   long i;
   for (i = 0; i < n; i++) {
      if (*ap & a_mask)
         x[i].rep.elts()[wj] ^= j_mask;

      a_mask <<= 1;
      if (!a_mask) {
         a_mask = 1;
         ap++;
      }
   }
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:29,代码来源:mat_GF2.c


示例4: ident

void ident(mat_GF2& X, long n)
{
   X.SetDims(n, n);
   clear(X);
   long i;

   for (i = 0; i < n; i++)
      X.put(i, i, to_GF2(1));
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:9,代码来源:mat_GF2.c


示例5: SetDims

NTL_START_IMPL


mat_GF2::mat_GF2(const mat_GF2& a)  
{  
   _mat_GF2__numcols = 0;  
   SetDims(a.NumRows(), a.NumCols());  
   _mat_GF2__rep = a._mat_GF2__rep;  
}  
开发者ID:JamesHirschorn,项目名称:QFCL,代码行数:9,代码来源:mat_GF2.cpp


示例6: initMatrix

/**
 * Initializes matrix from specified array.
 * Data must be at least dimension of given matrix.
 */
int initMatrix(mat_GF2& M, long *data){
	long i,j,n,m;
	for(i=0, n=M.NumRows(); i<n; i++){
		for(j=0, m=M.NumCols(); j<m; j++){
			M.put(i,j,data[n*i+j]);
		}
	}

	return 0;
}
开发者ID:Lulongping,项目名称:Whitebox-crypto-AES,代码行数:14,代码来源:NTLUtils.cpp


示例7: IsDiag

long IsDiag(const mat_GF2& A, long n, GF2 d)
{
   if (A.NumRows() != n || A.NumCols() != n)
      return 0;

   if (d == 1)
      return IsIdent(A, n);
   else
      return IsZero(A);
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:10,代码来源:mat_GF2.c


示例8: transpose_aux

void transpose_aux(mat_GF2& X, const mat_GF2& A)
{
   long n = A.NumRows();
   long m = A.NumCols();

   X.SetDims(m, n);
   clear(X);

   long i;
   for (i = 0; i < n; i++)
      AddToCol(X, i, A[i]);
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:12,代码来源:mat_GF2.c


示例9: gauss

long gauss(mat_GF2& M, long w)
{
   long k, l;
   long i, j;
   long pos;

   long n = M.NumRows();
   long m = M.NumCols();

   if (w < 0 || w > m)
      Error("gauss: bad args");

   long wm = (m + NTL_BITS_PER_LONG - 1)/NTL_BITS_PER_LONG;

   l = 0;
   for (k = 0; k < w && l < n; k++) {
      long wk = k/NTL_BITS_PER_LONG;
      long bk = k - wk*NTL_BITS_PER_LONG;
      _ntl_ulong k_mask = 1UL << bk;


      pos = -1;
      for (i = l; i < n; i++) {
         if (M[i].rep.elts()[wk] & k_mask) {
            pos = i;
            break;
         }
      }

      if (pos != -1) {
         if (l != pos)
            swap(M[pos], M[l]);

         _ntl_ulong *y = M[l].rep.elts();

         for (i = l+1; i < n; i++) {
            // M[i] = M[i] + M[l]*M[i,k]

            if (M[i].rep.elts()[wk] & k_mask) {
               _ntl_ulong *x = M[i].rep.elts();

               for (j = wk; j < wm; j++)
                  x[j] ^= y[j];
            }
         }

         l++;
      }
   }

   return l;
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:52,代码来源:mat_GF2.c


示例10: cvt

void cvt(mat_GF2& x, const mat_zz_p& a)
{
    long n = a.NumRows();
    long m = a.NumCols();

    x.SetDims(n, m);

    long i, j;

    for (i = 0; i < n; i++)
        for (j = 0; j < m; j++)
            x.put(i, j, rep(a[i][j]));
}
开发者ID:tell,项目名称:ntl-unix,代码行数:13,代码来源:BitMatTest.cpp


示例11: swap

vec_GF2 GF2MatrixUtils::solve(mat_GF2 A, vec_GF2 b) {

    uint32_t nextRow = 0;
    for (uint32_t j =0; j < A.NumCols(); j++) {
        uint32_t i;
        for (i=nextRow; i < A.NumRows(); i++) {
            if (A[i][j] == 1) {
                break;
            }
        }
        if (i==A.NumRows()) {
            continue;
        }
        if (A[i][j] == 1) {
            if (nextRow !=i) {
                swap(A[nextRow],A[i]);
                swap(b[nextRow],b[i]);
            }
            for (uint32_t k=nextRow+1; k < A.NumRows(); k++) {
                if (A[k][j] == 1) {
                    A[k] = A[k] + A[nextRow];
                    b[k] = b[k] + b[nextRow];
                }
            }
            nextRow++;
        }
    }

    vec_GF2 sol;
    sol.SetLength(A.NumCols(), GF2(0));

    int32_t lastRow=A.NumRows()-1;

    while (A[lastRow][A.NumCols()-1]==0) {
        if ((A[lastRow]*sol) != b[lastRow]) {
            throw(system_error());
        }
        lastRow--;
        if (lastRow == -1) {
            throw(system_error());
        }
    }

    for (int32_t j=A.NumCols()-1; j >= 0; j--) {
        if (lastRow == -1) {
            throw(system_error());
        }

        if (A[lastRow][j]==0) {
            continue;
        }

        if ((A[lastRow]*sol) != b[lastRow]) {
            sol[j]=1;
        }
        lastRow--;
    }

    return sol;
}
开发者ID:cryptobiu,项目名称:MultiPartyPSI,代码行数:60,代码来源:GF2MatrixUtils.cpp


示例12: IsIdent

long IsIdent(const mat_GF2& A, long n)
{
   if (A.NumRows() != n || A.NumCols() != n)
      return 0;

   if (n == 0) return 1;

   long i;

   for (i = 0; i < n; i++)
      if (!IsUnitVector(A[i], i))
         return 0;

   return 1;
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:15,代码来源:mat_GF2.c


示例13: clear

void clear(mat_GF2& x)
{
   long n = x.NumRows();
   long i;
   for (i = 0; i < n; i++)
      clear(x[i]);
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:7,代码来源:mat_GF2.c


示例14: kernel

void kernel(mat_GF2& X, const mat_GF2& A)
{
   long m = A.NumRows();
   long n = A.NumCols();

   mat_GF2 M;
   long r;

   transpose(M, A);
   r = gauss(M);

   X.SetDims(m-r, m);
   clear(X);

   long i, j, k;

   vec_long D;
   D.SetLength(m);
   for (j = 0; j < m; j++) D[j] = -1;

   j = -1;
   for (i = 0; i < r; i++) {
      do {
         j++;
      } while (M.get(i, j) == 0);

      D[j] = i;
   }

   for (k = 0; k < m-r; k++) {
      vec_GF2& v = X[k];
      long pos = 0;
      for (j = m-1; j >= 0; j--) {
         if (D[j] == -1) {
            if (pos == k) {
               v[j] = 1;
               // v.put(j, to_GF2(1));
            }
            pos++;
         }
         else {
            v[j] = v*M[D[j]];
            // v.put(j, v*M[D[j]]);
         }
      }
   }
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:47,代码来源:mat_GF2.c


示例15:

long operator==(const mat_GF2& a, const mat_GF2& b)  
{  
   if (a.NumCols() != b.NumCols())  
      return 0;  
  
   if (a.NumRows() != b.NumRows())  
      return 0;  
  
   long n = a.NumRows();  
   long i;  
  
   for (i = 0; i < n; i++)  
      if (a[i] != b[i])  
         return 0;  
  
   return 1;  
}  
开发者ID:JamesHirschorn,项目名称:QFCL,代码行数:17,代码来源:mat_GF2.cpp


示例16: diag

void diag(mat_GF2& X, long n, GF2 d)
{
   if (d == 1)
      ident(X, n);
   else {
      X.SetDims(n, n);
      clear(X);
   }
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:9,代码来源:mat_GF2.c


示例17: mul

void mul(vec_GF2& x, const mat_GF2& A, const vec_GF2& b)
{
   if (&b == &x || A.position1(x) != -1) {
      vec_GF2 tmp;
      mul_aux(tmp, A, b);
      x = tmp;
   }
   else
      mul_aux(x, A, b);
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:10,代码来源:mat_GF2.c


示例18: IsZero

long IsZero(const mat_GF2& a)
{
   long n = a.NumRows();
   long i;

   for (i = 0; i < n; i++)
      if (!IsZero(a[i]))
         return 0;

   return 1;
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:11,代码来源:mat_GF2.c


示例19: conv

void conv(mat_GF2& x, const vec_vec_GF2& a)  
{  
   long n = a.length();  
  
   if (n == 0) {  
      x.SetDims(0, 0);  
      return;  
   }  
  
   long m = a[0].length();  
   long i;  
  
   for (i = 1; i < n; i++)  
      if (a[i].length() != m)  
         Error("nonrectangular matrix");  
  
   x.SetDims(n, m);  
   for (i = 0; i < n; i++)  
      x[i] = a[i];  
}  
开发者ID:JamesHirschorn,项目名称:QFCL,代码行数:20,代码来源:mat_GF2.cpp


示例20: add

void add(mat_GF2& X, const mat_GF2& A, const mat_GF2& B)
{
   long n = A.NumRows();
   long m = A.NumCols();

   if (B.NumRows() != n || B.NumCols() != m)
      Error("matrix add: dimension mismatch");

   X.SetDims(n, m);

   long mw = (m + NTL_BITS_PER_LONG - 1)/NTL_BITS_PER_LONG;

   long i;
   for (i = 0; i < n; i++) {
      _ntl_ulong *xp = X[i].rep.elts();
      const _ntl_ulong *ap = A[i].rep.elts();
      const _ntl_ulong *bp = B[i].rep.elts();
      long j;
      for (j = 0; j < mw; j++)
         xp[j] = ap[j] ^ bp[j];
   }
}
开发者ID:Macaulay2,项目名称:Singular,代码行数:22,代码来源:mat_GF2.c



注:本文中的mat_GF2类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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