FreeCalypso > hg > sms-coding-utils
view libcoding/gsm7_pack.c @ 13:b8d8f8a3cdb7
scripts: wrappers for network-side SMS-DELIVER PDU generation
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 27 Aug 2023 05:11:21 +0000 |
parents | 2d0082216916 |
children |
line wrap: on
line source
/* * This library module implements the function for packing septets into octets. */ #include <sys/types.h> gsm7_pack(inbuf, outbuf, noctets) u_char *inbuf, *outbuf; unsigned noctets; { u_char *ip = inbuf, *op = outbuf; unsigned n, c; for (n = 0; n < noctets; n++) { c = n % 7; *op++ = ((ip[1] << 7) | ip[0]) >> c; if (c == 6) ip += 2; else ip += 1; } }