FreeCalypso > hg > freecalypso-tools
view uptools/libcoding/gsmtime.c @ 837:724a6bc2a4b8
CHANGES: document tiaud-compile & tiaud-decomp extension
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 30 Jul 2021 01:37:42 +0000 |
parents | f40530e2d48d |
children |
line wrap: on
line source
/* * This library module implements decoding of GSM timestamps. */ #include <sys/types.h> #include <stdio.h> gsm_timestamp_decode(inbuf, outbuf) u_char *inbuf; char *outbuf; { u_char rev[7]; int i, d1, d2, tzsign; for (i = 0; i < 7; i++) { d1 = inbuf[i] & 0xF; d2 = inbuf[i] >> 4; rev[i] = (d1 << 4) | d2; } if (rev[6] & 0x80) { rev[6] &= 0x7F; tzsign = '-'; } else tzsign = '+'; sprintf(outbuf, "%02X/%02X/%02X,%02X:%02X:%02X%c%02X", rev[0], rev[1], rev[2], rev[3], rev[4], rev[5], tzsign, rev[6]); }