Add the ability to
* declare range types and float types, * use integer (resp. real) literals for those types through casting, * specify how to print them in drivers. Change in syntax * use type t = < range 1 2 > (* integers from 1 to 2 *) type t' = < float 4 12 > (* float with 4 bits in exponent and 12 in mantissa *) the two projections : t'int t''real and the predicate : t''isFinite * Restrict the use of "'" in whyml: Users are not allowed to introduce names where a quote symbol is followed by a letter. Thus, the following identifiers are valid: t' toto'0'' toto'_phi whereas toto'phi is not. Note: we do not yet support negative numbers in range declaration and casting of a literal.