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Manuel Scilab >> Fonctions Elémentaires > Trigonométrie > csgn

csgn

Returns the sign of a vector of real of complex values.

Calling Sequence

s = csgn(z)

Arguments

z

The 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 if positive

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

If the real part is equal to zero:

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

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

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

Description

Returns the sign of a vector of real of complex values.

Examples

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

Authors

  • Y. Collette
<< csch Trigonométrie sinc >>

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Last updated:
Wed Jan 26 16:24:04 CET 2011