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Aide de Scilab >> Fonctions Elémentaires > Trigonométrie > csgn

csgn

returns the sign of a vector of real of complex values

Syntax

s = csgn(z)

Arguments

z

a vector of values on which we want to compute the sign

s

if the real part is not equal to zero:

  • +1 if the real part of an element is positive

  • -1 if the real part of an element is negative

If the real part is equal to zero:

  • +1 if the imaginary part of an element is positive

  • -1 if the imaginary part of an element is negative

if the element is equal to zero, then returns %nan

Description

The csgn function returns the sign of a vector of real of complex values z.

Examples

A = [1 1+%i 0 -1 1-%i -1-%i];
csgn(A)

See also

  • sign — fonction signe
  • signm — fonction signe matriciel
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Last updated:
Mon Feb 12 19:15:27 CET 2018