Original bug ID: 451
Reporter: administrator
Status: closed
Resolution: fixed
Priority: normal
Severity: minor
Category: ~DO NOT USE (was: OCaml general)

Bug description

Les fonctions Big_int.power_big_int_positive_big_int et
Big_int.power_int_positive_big_int semblent fausses:

    Objective Caml version 3.01+4 (2001-06-18)

open Big_int;;

string_of_big_int

(power_big_int_positive_big_int (big_int_of_string "3")
(big_int_of_string "47"));;

• : string = "1853020188851841"

string_of_big_int (power_int_positive_int 3 47);;

• : string = "26588814358957503287787"

string_of_big_int (power_big_int_positive_int (big_int_of_string "3") 47);;

• : string = "26588814358957503287787"

string_of_big_int (power_int_positive_big_int 3 (big_int_of_string "47"));;

• : string = "7056148742039409131"

estephe:/tmp$ bc
bc 1.05
Copyright 1991, 1992, 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
3^47
26588814358957503287787

Aussi, ça manque d'une fonction d'exponentiation modulaire, ainsi que
de génération de grands entiers aléatoires, premiers ou non.

• Xavier "RSA" Leroy