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/* ACC -- Automatic Compiler Configuration
Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
This software is a copyrighted work licensed under the terms of
the GNU General Public License. Please consult the file "ACC_LICENSE"
for details.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/
*/
#define __ACCLIB_HMEMCPY_CH_INCLUDED 1
#if !defined(ACCLIB_PUBLIC)
# define ACCLIB_PUBLIC(r,f) r __ACCLIB_FUNCNAME(f)
#endif
/***********************************************************************
// memcmp, memcpy, memmove, memset
************************************************************************/
ACCLIB_PUBLIC(int, acc_hmemcmp) (const acc_hvoid_p s1, const acc_hvoid_p s2, acc_hsize_t len)
{
#if (ACC_HAVE_MM_HUGE_PTR) || !defined(HAVE_MEMCMP)
const acc_hbyte_p p1 = (const acc_hbyte_p) s1;
const acc_hbyte_p p2 = (const acc_hbyte_p) s2;
if (len > 0) do
{
int d = *p1 - *p2;
if (d != 0)
return d;
p1++; p2++;
} while (--len > 0);
return 0;
#else
return memcmp(s1, s2, len);
#endif
}
ACCLIB_PUBLIC(acc_hvoid_p, acc_hmemcpy) (acc_hvoid_p dest, const acc_hvoid_p src, acc_hsize_t len)
{
#if (ACC_HAVE_MM_HUGE_PTR) || !defined(HAVE_MEMCPY)
acc_hbyte_p p1 = (acc_hbyte_p) dest;
const acc_hbyte_p p2 = (const acc_hbyte_p) src;
if (len <= 0 || p1 == p2)
return dest;
do
*p1++ = *p2++;
while (--len > 0);
return dest;
#else
return memcpy(dest, src, len);
#endif
}
ACCLIB_PUBLIC(acc_hvoid_p, acc_hmemmove) (acc_hvoid_p dest, const acc_hvoid_p src, acc_hsize_t len)
{
#if (ACC_HAVE_MM_HUGE_PTR) || !defined(HAVE_MEMMOVE)
acc_hbyte_p p1 = (acc_hbyte_p) dest;
const acc_hbyte_p p2 = (const acc_hbyte_p) src;
if (len <= 0 || p1 == p2)
return dest;
if (p1 < p2)
{
do
*p1++ = *p2++;
while (--len > 0);
}
else
{
p1 += len;
p2 += len;
do
*--p1 = *--p2;
while (--len > 0);
}
return dest;
#else
return memmove(dest, src, len);
#endif
}
ACCLIB_PUBLIC(acc_hvoid_p, acc_hmemset) (acc_hvoid_p s, int c, acc_hsize_t len)
{
#if (ACC_HAVE_MM_HUGE_PTR) || !defined(HAVE_MEMSET)
acc_hbyte_p p = (acc_hbyte_p) s;
if (len > 0) do
*p++ = (unsigned char) c;
while (--len > 0);
return s;
#else
return memset(s, c, len);
#endif
}
/*
vi:ts=4:et
*/
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