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memmove.c
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C/C++ Source or Header
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1995-05-21
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634b
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25 lines
/* memmove.c -- copy memory.
Copy LENGTH bytes from SOURCE to DEST. Does not null-terminate.
In the public domain.
By David MacKenzie <djm@gnu.ai.mit.edu>. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
void
memmove (dest, source, length)
char *dest;
const char *source;
unsigned length;
{
if (source < dest)
/* Moving from low mem to hi mem; start at end. */
for (source += length, dest += length; length; --length)
*--dest = *--source;
else if (source != dest)
/* Moving from hi mem to low mem; start at beginning. */
for (; length; --length)
*dest++ = *source++;
}