FreeCalypso > hg > fc-sim-tools
view libutil/decimal_incr.c @ 53:fbedb67d234f
serial: fix parity for inverse coding convention
Important note: it is my (Mother Mychaela's) understanding that
SIM cards with inverse coding convention are extremely rare,
and I have never seen such a card. Therefore, our support for
the inverse coding convention will likely remain forever untested.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 21 Mar 2021 20:46:09 +0000 |
parents | 9c9f6adbaedb |
children |
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/* * This module implements a function for incrementing decimal strings, * to be used in producing ranges of ICCID and IMSI numbers. */ #include <sys/types.h> void decimal_string_increment(str, ndigits) u_char *str; unsigned ndigits; { u_char *p; for (p = str + ndigits; p > str; ) { --p; (*p)++; if (*p < 10) return; *p = 0; } }