view libcoding/alpha_addr.c @ 31:19476164c54d

doc/SMS-PDU-decoding: document imported utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 14 Jun 2024 18:48:58 +0000
parents c8cb05b69118
children
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/*
 * 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);
}