Command Reference : Matrix Language Reference
  
 
@issingular
Test matrix for singularity.
Syntax: @issingular(m)
m: matrix, sym
Return: integer
Returns “1” if the square matrix or sym, o, is singular, and “0” otherwise.
A singular matrix has a determinant of 0, and cannot be inverted.
Examples
scalar sc1 = @issingular(m1)
Cross-references
See also @det.