In the dataframe Error replacing values ​in all columns using ifelse

Question

In a dataframe, I want to convert a negative number to an absolute value and multiply it by 100 for a positive number.

r

a b c

0.6 0 -0.1

0 -0.2 0.3

r %>% mutate(across(function(x) ifelse(x<0,-x,x*100)))

I get an error.

I want output

r a b c

60 0 0.1

0 0.2 30

thank you