eldo_user

Eldo Control Language
Statement Overview
set a[] = {1, 2, 4}
set b[-3,3] = {-1, 0, 0, 1, 0, 0, -1}
a[5] = 8 /* a[4] will be 1 because it is the default value. */
b[1, 2] = {0.5, -0.5}
The memory corresponding to a vector is automatically freed upon exit of the task in which it
was allocated.
Multi-dimensional Vectors
Multi-dimensional vectors are created using the ; separator (or alternatively separate brackets)
for the dimensions. The example below creates a 10×10 matrix:
set a[0,9;0,9] = 0
Elements of multi-dimensional vectors are referred to using the notation a[i;j] or a[i][j].
Both notations are equivalent, and a matrix is implemented in ECL as a vector of vectors. mat[i]
yields line i of the matrix (a vector). mat[i][j] yields the matrix element on line i and column j.
A matrix can be declared and initialized using the following equivalent syntaxes:
set a[0,9;0,9] = 0
set b[0,9][0,9] = 0
To declare an empty matrix:
set c[][] = 0
Matrix Attributes
The number of lines of a matrix is the number of elements of vector (of vectors):
mat.size
The number of columns of a matrix is the number of elements of any line, for example the first
line, which is vector mat[mat.imin]:
mat[mat.imin].size
Refer to the example $MGC_AMS_HOME/examples/ecl/12-rc_compounds/rc_compounds.cir
that shows how to loop on all the matrix elements.
Beware, there is no mechanism that forces the lines of the matrix to remain the same size, that
is, line vectors grow independently using the auto-expanding mechanism of ECL. For example,
the following code:
828
Eldo® User's Manual, 15.3