Class VectorVectorMult_ZDRM

java.lang.Object
org.ejml.dense.row.mult.VectorVectorMult_ZDRM

public class VectorVectorMult_ZDRM extends Object
Operations that involve multiplication of two vectors.
  • Constructor Details

    • VectorVectorMult_ZDRM

      public VectorVectorMult_ZDRM()
  • Method Details

    • innerProd

      public static Complex_F64 innerProd(ZMatrixRMaj x, ZMatrixRMaj y, @Nullable @Nullable Complex_F64 output)

      Computes the inner product of the two vectors. In geometry this is known as the dot product.

      k=1:n xk * yk
      where x and y are vectors with n elements.

      These functions are often used inside of highly optimized code and therefor sanity checks are kept to a minimum. It is not recommended that any of these functions be used directly.

      Parameters:
      x - A vector with n elements. Not modified.
      y - A vector with n elements. Not modified.
      Returns:
      The inner product of the two vectors.
    • innerProdH

      public static Complex_F64 innerProdH(ZMatrixRMaj x, ZMatrixRMaj y, @Nullable @Nullable Complex_F64 output)

      Computes the inner product between a vector and the conjugate of another one.

      k=1:n xk * conj(yk)
      where x and y are vectors with n elements.

      These functions are often used inside of highly optimized code and therefor sanity checks are kept to a minimum. It is not recommended that any of these functions be used directly.

      Parameters:
      x - A vector with n elements. Not modified.
      y - A vector with n elements. Not modified.
      Returns:
      The inner product of the two vectors.
    • outerProd

      public static void outerProd(ZMatrixRMaj x, ZMatrixRMaj y, ZMatrixRMaj A)

      Sets A ∈ ℜ m × n equal to an outer product multiplication of the two vectors. This is also known as a rank-1 operation.

      A = x * yT where x ∈ ℜ m and y ∈ ℜ n are vectors.

      Which is equivalent to: Aij = xi*yj

      Parameters:
      x - A vector with m elements. Not modified.
      y - A vector with n elements. Not modified.
      A - A Matrix with m by n elements. Modified.
    • outerProdH

      public static void outerProdH(ZMatrixRMaj x, ZMatrixRMaj y, ZMatrixRMaj A)

      Sets A ∈ ℜ m × n equal to an outer product multiplication of the two vectors. This is also known as a rank-1 operation.

      A = x * yH where x ∈ ℜ m and y ∈ ℜ n are vectors.

      Which is equivalent to: Aij = xi*yj

      Parameters:
      x - A vector with m elements. Not modified.
      y - A vector with n elements. Not modified.
      A - A Matrix with m by n elements. Modified.