Complex numbers
- angle — argument of complex numbers, in radians
- complex — Build an array of complex numbers from their parts
- conj — Complex conjugate
- csgn — returns the sign of a vector of real of complex values
- imag — imaginary part of complex numbers, polynomials, or rationals
- imult — multiplication by i the imaginary unitary
- isreal — check if a variable is stored as a complex matrix
- real — real part of complex numbers, polynomials, or rationals