Hello,
> De : Federico Miyara
> Envoyé : mardi 29 janvier 2019 21:36
>
> This is an improved version of the acos function with input argument check:
I would personally write it in the following way:
function y=acos1(x)
// Check if components are real
// Check if components are real and belong to [-1, 1]
absx = abs(x);
in_domain = (imag(x)==0) & (-1<=absx) & (absx<=1);
// Imaginary part of acos(x) is accepted only if
// x does not belong to [-1, 1]
y=acos(x);
y(in_domain) = real(y(in_domain));
endfunction
Regards
--
Christophe Dang Ngoc Chan
Mechanical calculation engineer
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