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37 lines
768 B
C
37 lines
768 B
C
#include <string.h>
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/* NOTE: This code is a duplicate of memmove implementation! */
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void* memcpy(void* dest, const void* src, size_t count)
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{
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char *char_dest = (char *)dest;
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char *char_src = (char *)src;
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if ((char_dest <= char_src) || (char_dest >= (char_src+count)))
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{
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/* non-overlapping buffers */
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while(count > 0)
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{
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*char_dest = *char_src;
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char_dest++;
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char_src++;
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count--;
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}
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}
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else
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{
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/* overlaping buffers */
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char_dest = (char *)dest + count - 1;
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char_src = (char *)src + count - 1;
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while(count > 0)
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{
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*char_dest = *char_src;
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char_dest--;
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char_src--;
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count--;
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}
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}
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return dest;
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}
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