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annotate libcoding/alpha_addr.c @ 31:19476164c54d

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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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1 /*
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2 * This library module contains some bits that help working with
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3 * alphabetic addresses.
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4 */
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6 #include <sys/types.h>
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8 u_char alpha_septets_to_digits[12] = {0, 2, 4, 6, 7, 9, 11, 13, 14, 16, 18, 20};
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10 alpha_addr_valid(ndigits, sepp)
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11 unsigned ndigits, *sepp;
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12 {
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13 unsigned n;
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15 for (n = 1; n <= 11; n++)
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16 if (alpha_septets_to_digits[n] == ndigits) {
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17 *sepp = n;
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18 return(1);
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19 }
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20 return(0);
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21 }