R Under development (unstable) (2023-11-07 r85491 ucrt) -- "Unsuffered Consequences"
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> ##
> ##  l a m b e r t W . R  test suite
> ##
> 
> 
> lambertWp <- pracma::lambertWp
> 
> x <- seq(0, 10, len=21)
> # y <- lambert_W0(x)
> y0 <- c(0.0000000, 0.3517337, 0.5671433, 0.7258614, 0.8526055, 0.9585864,
+         1.0499089, 1.1302893, 1.2021679, 1.2672378, 1.3267247, 1.3815454,
+         1.4324048, 1.4798568, 1.5243452, 1.5662310, 1.6058120, 1.6433371,
+         1.6790164, 1.7130288, 1.7455280)
> 
> all.equal(lambertWp(x), y0, tolerance = 1e-7)
[1] TRUE
> 
> proc.time()
   user  system elapsed 
   0.12    0.03    0.14