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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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1010014a
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1992-08-12
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Listing 2 -- the file memcpy.c
/* memcpy function */
#include <string.h>
void *(memcpy)(void *s1, const void *s2, size_t n)
{ /* copy char s2[n] to s1[n] in any order */
char *su1 = (char *)s1;
const char *su2 = (const char *)s2;
for (; 0 < n; ++su1, ++su2, --n)
*su1 = *su2;
return (s1);
}