Re: [Scilab-users] isreal question
Le 06/03/2020 à 19:31, kjubo a écrit : Dear all, consider this code: ==start of code clc clear a3 = 1 a2 = -1 a1 = 0.106865 a0 = -0.002212 mode(0) sol = roots([a3 a2 a1 a0]) isreal(sol(1)) isreal(sol(2)) isreal(sol(3)) ==end of code i get this print in console: sol = 0.8816333 0.0907062 0.0276605 ans = F ans = F ans = F I do not understand, why the isreal return false flag, if all roots are real with no imaginary part. I am missing something? Or it is bug? isreal() tests the encoding as complex, not the mathematical realness. If you wish to test the realness, then you have to use isreal(x, 0) Then, isreal(,0) still looks awkward, because we expect an element-wise answer, while only one scalar boolean is returned when x is a vector or a matrix. Samuel ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] isreal question
Hello, This has been fixed in Scilab 6.1. S. > Le 6 mars 2020 à 19:31, kjubo a écrit : > > Dear all, > > consider this code: > > ==start of code > clc > clear > > a3 = 1 > a2 = -1 > a1 = 0.106865 > a0 = -0.002212 > mode(0) > sol = roots([a3 a2 a1 a0]) > isreal(sol(1)) > isreal(sol(2)) > isreal(sol(3)) > ==end of code > > i get this print in console: > > sol = > > 0.8816333 > 0.0907062 > 0.0276605 > ans = > > F > ans = > > F > ans = > > F > > I do not understand, why the isreal return false flag, if all roots are real > with no imaginary part. > > I am missing something? Or it is bug? > > using Scilab 6.0.2 x64 > > thank you > > BR > > J.K. > > > > -- > Sent from: > https://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html > ___ > users mailing list > users@lists.scilab.org > https://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
