When I scroll to the list, the lowest (positive) value is 8.4E-08 (works fine) and no %eps .
How Can I check if %eps is in? De : users [mailto:users-boun...@lists.scilab.org] De la part de Stéphane Mottelet Envoyé : mardi 29 janvier 2019 16:50 À : users@lists.scilab.org Objet : [EXTERNAL] Re: [Scilab-users] acos leads to complex values Le 29/01/2019 à 16:45, Carrico, Paul a écrit : Dear All I spent some time in looking for a mistake in my code ; finally I've found that the ACOS of a real vector leads to some complex values (???) acos(Scar_P(:,1) ./ CM_x_CN(:,1)) Are your really sure, because we may have --> x=-1-%eps x = -1. --> acos(x) ans = 3.1415927 - 2.107D-08i S. (the formula worked so far) I checked that the input values are correct: - Comprised between [-1; 1] using MIN and MAX - Composed only of real values using ISREAL (all the vectors are correct) Thus I do not understand why complex values appear ? May it come from the vectorization ? Paul _______________________________________________ users mailing list users@lists.scilab.org<mailto:users@lists.scilab.org> https://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users<https://urldefense.proofpoint.com/v2/url?u=https-3A__antispam.utc.fr_proxy_1_c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy_lists.scilab.org_mailman_listinfo_users&d=DwMG-g&c=0hKVUfnuoBozYN8UvxPA-w&r=4TCz--8bXfJhZZvIxJAemAJyz7Vfx78XvgYu3LN7eLo&m=rN8DsnGalih7CBHModSb9evOi3rmZRFFYcBFHTC71gU&s=RgKyyESZ7uSTxlU7V0nR42XTJybjC0Ar5fDcrouQThE&e=> -- Stéphane Mottelet Ingénieur de recherche EA 4297 Transformations Intégrées de la Matière Renouvelable Département Génie des Procédés Industriels Sorbonne Universités - Université de Technologie de Compiègne CS 60319, 60203 Compiègne cedex Tel : +33(0)344234688 http://www.utc.fr/~mottelet<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.utc.fr_-7Emottelet&d=DwMG-g&c=0hKVUfnuoBozYN8UvxPA-w&r=4TCz--8bXfJhZZvIxJAemAJyz7Vfx78XvgYu3LN7eLo&m=rN8DsnGalih7CBHModSb9evOi3rmZRFFYcBFHTC71gU&s=34gC0H3RYWxwcKp7fr4bR5XFfy1acxO72YI9AYJJFhA&e=>
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