TSP (libtsp) - MAdAllocMat

MAdAllocMat

Routine

double **MAdAllocMat (int Nrow, int Ncol)

Purpose

Allocate a matrix of double values

Description

This routine allocates a matrix of double values. The returned value is a pointer to an array of pointers to the rows of the matrix. The calling routine can treat the returned value as a two-dimensional matrix of double values. Consider the invocation

  double **A;
  int Nrow, Ncol;
  ...
  A = MAdAllocMat (Nrow, Ncol);

Then A[i][j] is a matrix of double values for 0 <= i < Nrow and 0 <= j < Ncol. The routine MAdAllocMat allocates an array of Nrow pointers and a contiguous block of memory sufficient to hold the Nrow*Ncol double values. Each pointer is initialized to point to a row of the matrix. A[0] is a pointer to the first row (Ncol double values) (and to the full matrix of Nrow*Ncol double values). A[1] points to the next row (Ncol elements beyond A[0]), and so on.

The space allocated by this routine should be deallocated using the routine MAdFreeMat.

Parameters

<- double **MAdAllocMat: Returned pointer to array of row pointers
-> int Nrow: Number of rows for the matrix
-> int Ncol: Number of elements in each row (number of columns)

Author / revision