File: closed-semi-ring.sig

package info (click to toggle)
mlton 20210117%2Bdfsg-3
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 58,464 kB
  • sloc: ansic: 27,682; sh: 4,455; asm: 3,569; lisp: 2,879; makefile: 2,347; perl: 1,169; python: 191; pascal: 68; javascript: 7
file content (20 lines) | stat: -rw-r--r-- 297 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
(*
 * Signature of a closed semi ring.  A closed semi ring has the
 * closure operation (star)
 * 
 * -- Allen
 *)

signature CLOSED_SEMI_RING =
sig

  type elem

  val zero : elem
  val one  : elem
  val +    : elem * elem -> elem
  val *    : elem * elem -> elem
  val star : elem -> elem

end