NAME
    matsum - sum the elements of a matrix

SYNOPSIS
    matsum(m)

TYPES
    m		matrix with any types of elements

    return	number

DESCRIPTION
    Returns the sum of the numeric (real or complex) elements of m.
    Non-numeric elements are ignored.

EXAMPLE
    > mat A[2,2] = {1, 2, 3, list(1,2,3)}
    print matsum(A)
      6

LIMITS
    none

LIBRARY
    void matsum(MATRIX *m, VALUE *vres);

SEE ALSO
    XXX - fill in