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decoding: failure checking is optional

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This commit is contained in:
Mirek Kratochvil 2012-05-22 15:43:56 +02:00
parent d573d1cfe7
commit 2c7d4276cf
2 changed files with 5 additions and 2 deletions
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4
lib/decoding.cpp
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@ -2,7 +2,8 @@
#include "decoding.h" #include "decoding.h"
bool syndrome_decode (bvector&syndrome, gf2m&fld, polynomial& goppa, bool syndrome_decode (bvector&syndrome, gf2m&fld, polynomial& goppa,
std::vector<polynomial>& sqInv, bvector&ev) std::vector<polynomial>& sqInv, bvector&ev,
bool check_failure)
{ {
ev.clear(); ev.clear();
@ -32,6 +33,7 @@ bool syndrome_decode (bvector&syndrome, gf2m&fld, polynomial& goppa,
if (a.eval (i, fld) == 0) { if (a.eval (i, fld) == 0) {
ev[i] = 1; ev[i] = 1;
if (!check_failure) continue;
//check if the error locator splits over GF(2^m). //check if the error locator splits over GF(2^m).
//We simplify it to the assumption that all roots are //We simplify it to the assumption that all roots are
//also roots of linear factors. //also roots of linear factors.

3
lib/decoding.h
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@ -9,6 +9,7 @@ bool syndrome_decode (bvector&syndrome,
gf2m&fld, gf2m&fld,
polynomial& gp, polynomial& gp,
std::vector<polynomial>& sqInv, std::vector<polynomial>& sqInv,
bvector&ev); bvector&ev,
bool check_failure = true);
#endif #endif