TSP (libtsp/MA) - 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

P. Kabal Copyright (C) 1995 / Revision 1.5 1995/06/08

#### See Also

MAfAllocMat, MAdFreeMat

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