name with negative number

[adammaj1]

Hi

I have a list of static images . The names are real numbers, both positive and negative.
I nedd na numercal order of files, like -1.0, -0.5,0.0, 0.5, 1.0 ....
How can I convert them to gif with numerically order ?
I have tried

gifsicle --delay=10 --loop *.gif > anim.gif
gifsicle:anim.gif: empty file