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MathLink C Function

MLGetReal32Array()

int MLGetReal32Array(MLINK link, float **a, int **dims, char ***heads, int *d)
gets an array of single-precision floating-point numbers from the MathLink connection specified by link, storing the array in a, its dimensions in dims and its depth in d.
  • The array a is laid out in memory like a C array declared as float a[m][n]... .
  • heads gives a list of character strings corresponding to the names of symbols that appear as heads at each level in the array.
  • MLGetReal32Array() allocates memory which must be disowned by calling MLReleaseReal32Array(). If MLGetReal32Array() fails and the function's return value indicates an error, do not call MLReleaseReal32Array()on the contents of a.
  • MLGetReal32Array() returns immutable data.
  • MLGetReal32Array() returns 0 in the event of an error, and a nonzero value if the function succeeds.
  • Use MLError() to retrieve the error code if MLGetReal32Array() fails.
  • MLGetReal32Array() is declared in the MathLink header file mathlink.h.
EXAMPLESCLOSE ALL
Basic Examples   (1)
#include "mathlink.h"

/* read an array of single-precision floating-point numbers from a link */

void f(MLINK lp)
{
    float *data;
    int *dims;
    char **heads;
    int d;

    if(! MLGetReal32Array(lp, &data, &dims, &heads, &d))
        {
            /* unable to read the array from lp */
            return;
        }

     /* ... */

    MLReleaseReal32Array(lp, data, dims, heads, d);
}
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