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view general/numerical/scalar/logth.m @ 61:eff6bddf82e3 tip

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Finally implemented perceptual brightness thing.
author samer
date Sun, 11 Oct 2015 10:20:42 +0100
parents db7f4afd27c5
children
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function y=logth(eps,x)
% logth - Natural log with lower threshold
%
% logth :: real~'lower threshold', real -> real.

x(x<eps)=eps; y=log(x);