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annotate libcoding/scaddr.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 7418ca2e9949
children
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7418ca2e9949 libcoding: add functions from freecalypso-tools/uptools/libcoding
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This library module contains the code that figures out how many digits
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3 * are there in a PDU-encoded Service Centre address.
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4 */
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5
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6 #include <sys/types.h>
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7
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8 sc_addr_ndigits(sca)
7418ca2e9949 libcoding: add functions from freecalypso-tools/uptools/libcoding
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9 u_char *sca;
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10 {
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11 unsigned nb, nd;
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12
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13 nb = sca[0];
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14 nd = (nb - 1) * 2;
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15 if ((sca[nb] & 0xF0) == 0xF0)
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16 nd--;
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17 return nd;
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18 }