diff options
Diffstat (limited to 'byte_dword.h')
| -rw-r--r-- | byte_dword.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/byte_dword.h b/byte_dword.h new file mode 100644 index 0000000..c7963ea --- /dev/null +++ b/byte_dword.h @@ -0,0 +1,63 @@ +#ifndef BYTE_DWORD +#define BYTE_DWORD + +/* Copyright 2007,2009 Alain Knaff. + * This file is part of mtools. + * + * Mtools is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Mtools is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Mtools. If not, see <http://www.gnu.org/licenses/>. + */ + +static Dword byte2dword(Byte* val) +{ + Dword l; + l = (val[0] << 24) + (val[1] << 16) + (val[2] << 8) + val[3]; + + return l; +} + +UNUSED(static Qword byte2qword(Byte* val)) +{ + Qword l; + l = val[0]; + l = (l << 8) | val[1]; + l = (l << 8) | val[2]; + l = (l << 8) | val[3]; + l = (l << 8) | val[4]; + l = (l << 8) | val[5]; + l = (l << 8) | val[6]; + l = (l << 8) | val[7]; + return l; +} + +static void dword2byte(Dword parm, Byte* rval) +{ + rval[0] = (parm >> 24) & 0xff; + rval[1] = (parm >> 16) & 0xff; + rval[2] = (parm >> 8) & 0xff; + rval[3] = parm & 0xff; +} + +UNUSED(static void qword2byte(Qword parm, Byte* rval)) +{ + rval[0] = (parm >> 56) & 0xff; + rval[1] = (parm >> 48) & 0xff; + rval[2] = (parm >> 40) & 0xff; + rval[3] = (parm >> 32) & 0xff; + rval[4] = (parm >> 24) & 0xff; + rval[5] = (parm >> 16) & 0xff; + rval[6] = (parm >> 8) & 0xff; + rval[7] = parm & 0xff; +} + +#endif |