Module NumTok.Unsigned
val equal : t -> t -> bool
val is_nat : t -> bool
val to_nat : t -> string option
val sprint : t -> string
val print : t -> Pp.t
sprint
andprint
returns the numeral as it was parsed, for printing
val parse : char Stdlib.Stream.t -> t
Parse a positive Coq numeral. Precondition: the first char on the stream is already known to be a digit ([0-9]). Precondition: at least two extra chars after the numeral to parse.
The recognized syntax is:
- integer part: [0-9][0-9_]*
- fractional part: empty or .[0-9_]+
- exponent part: empty or [eE][+-]?[0-9][0-9_]* or
- integer part: 0[xX][0-9a-fA-F][0-9a-fA-F_]*
- fractional part: empty or .[0-9a-fA-F_]+
- exponent part: empty or [pP][+-]?[0-9][0-9_]*
val parse_string : string -> t option
Parse the string as a non negative Coq numeral, if possible