 x=c.bigz(1:10,4,78,NA)
> x
 [1] "1"  "2"  "3"  "4"  "5"  "6"  "7"  "8"  "9"  "10" "4"  "78" "NA"
> x[12]
[1] "78"
> x[13]
[1] "0"


> max.bigz(1:10,4,78,NA)
[1] "269653970229425383598692395468593241088322026492507901905402939417320933254485890939796955099302180188971623023005661539310855695935759376615857567599472873400528811349204333736152257830107446553333670133666606746438802800063353690283455789426038632208916715592554825644961573453826957827246636338344317943808"


Remplacer x == NA_REAL par R_FINITE(x)

faire attention au getValueTemp () => ne genere pas le NAn
