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deb-goldedplus/goldlib/gall/gcrcm32.cpp

55 lines
1.8 KiB
C++

// This may look like C code, but it is really -*- C++ -*-
// ------------------------------------------------------------------
// The Goldware Library
// Copyright (C) 1990-1999 Odinn Sorensen
// Copyright (C) 1999-2000 Alexander S. Aganichev
// ------------------------------------------------------------------
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this program; if not, write to the Free
// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
// MA 02111-1307, USA
// ------------------------------------------------------------------
// $Id$
// ------------------------------------------------------------------
// CRC-16, CRC-32 and Hashing
// ------------------------------------------------------------------
#include <gctype.h>
#include <gcrcall.h>
// ------------------------------------------------------------------
// Generate CRC-32 of a memory block
dword memCrc32(const void* _m, long l, bool __case, dword mask) {
long n;
dword crc = mask;
const char *m = (const char *)_m;
if(__case) {
for(n=0; n<l; n++)
crc = updCrc32(g_toupper(*m++), crc);
}
else {
for(n=0; n<l; n++)
crc = updCrc32(*m++, crc);
}
return crc;
}
// ------------------------------------------------------------------