leading-zero = 03.14
leading-zero-neg = -03.14
leading-zero-plus = +03.14

leading-point = .12345
leading-point-neg = -.12345
leading-point-plus = +.12345

trailing-point = 1.
trailing-point-min = -1.
trailing-point-plus = +1.

trailing-us = 1.2_
leading-us = _1.2
us-before-point = 1_.2
us-after-point = 1._2

double-point-1 = 0..1
double-point-2 = 0.1.2

exp-point-1 = 1e2.3
exp-point-2 = 1.e2
exp-point-3 = 3.e+20

exp-double-e-1 = 1ee2
exp-double-e-2 = 1e2e3

exp-leading-us = 1e_23
exp-trailing-us = 1e23_
exp-double-us = 1e__23

exp-trailing-us-1 = 1_e2
exp-trailing-us-2 = 1.2_e2

inf-incomplete-1 = in
inf-incomplete-2 = +in
inf-incomplete-3 = -in

nan-incomplete-1 = na
nan-incomplete-2 = +na
nan-incomplete-3 = -na

nan_underscore = na_n
inf_underscore = in_f