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Screen to detect impossible values in vectors of u ratios.
screen_u(u_vec, art_name = "u ratio")
Does not return values; stops processes if improper values are used.
Vector of u ratios.
Optional artifact name to use in warning messages.
## Not run ## screen_u(u_vec = c(0, .8), art_name = "ux") ## screen_u(u_vec = c(-1, .8), art_name = "ux") ## screen_u(u_vec = c(Inf, .8), art_name = "ux")
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