FreeCalypso > hg > sms-coding-utils
view libcoding/alpha_addr.c @ 26:c8cb05b69118
libcoding alpha addr: support both encoding and decoding
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 13 Jun 2024 01:55:19 +0000 |
parents | 5854e48d0ef7 |
children |
line wrap: on
line source
/* * This library module contains some bits that help working with * alphabetic addresses. */ #include <sys/types.h> u_char alpha_septets_to_digits[12] = {0, 2, 4, 6, 7, 9, 11, 13, 14, 16, 18, 20}; alpha_addr_valid(ndigits, sepp) unsigned ndigits, *sepp; { unsigned n; for (n = 1; n <= 11; n++) if (alpha_septets_to_digits[n] == ndigits) { *sepp = n; return(1); } return(0); }