FreeCalypso > hg > sms-coding-utils
view libcoding/hexdigits.c @ 7:cd2d82ec5144
libcoding/hexdigits.c: import from fc-sim-tools/libutil
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 05 Aug 2023 06:32:37 +0000 (21 months ago) |
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/* * This module contains elementary functions for working with hex digits. */ decode_hex_digit(c) { if (c >= '0' && c <= '9') return(c - '0'); if (c >= 'A' && c <= 'F') return(c - 'A' + 10); if (c >= 'a' && c <= 'f') return(c - 'a' + 10); return(-1); } encode_hex_digit(d) unsigned d; { if (d <= 9) return(d + '0'); else return(d - 10 + 'A'); }