wehub-resource-sync
9 lines
222 B
Matlab
Executable File
9 lines
222 B
Matlab
Executable File
function y = log1pexp(x)
|
|
% Accurately compute y = log(1+exp(x))
|
|
% reference: Accurately Computing log(1-exp(-|a|)) Martin Machler
|
|
y = x;
|
|
i = x > 18;
|
|
j = i & (x <= 33.3);
|
|
y(~i) = log1p(exp(x(~i)));
|
|
y(j) = x(j)+exp(-x(j));
|