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Correct ECI but in DotCode

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Avoid creating codewords > 112
Fixes #174 reported by Milton Neal
This commit is contained in:
Robin Stuart 2019-12-26 17:57:29 +00:00
parent af50515a49
commit 2faff4e76f
1 changed files with 2 additions and 2 deletions
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backend/dotcode.c
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@ -496,8 +496,8 @@ static int dotcode_encode_message(struct zint_symbol *symbol, const unsigned cha
// the next three codewords valued A, B & C encode the ECI value of
// (A - 40) * 12769 + B * 113 + C + 40 (Section 5.2.1)
int a, b, c;
a = (symbol->eci - 40) % 12769;
b = ((symbol->eci - 40) - (12769 * a)) % 113;
a = (symbol->eci - 40) / 12769;
b = ((symbol->eci - 40) - (12769 * a)) / 113;
c = (symbol->eci - 40) - (12769 * a) - (113 * b);
codeword_array[array_length] = a + 40;