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#include <string.h>
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#include <string.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <ctype.h>
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#include <limits.h>
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#include <limits.h>
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#include <align.h>
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/* Dummy implementation of mem/ functions */
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/* Dummy implementation of mem/ functions */
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void * memset(void *s, int c, size_t n)
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void * memset(void *s, int c, size_t n)
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    while (n--)
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    while (n--)
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        *(os++) = c;
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        *(os++) = c;
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    return s;
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    return s;
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}
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}
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struct along {unsigned long n; } __attribute__ ((packed));
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static void * unaligned_memcpy(void *dst, const void *src, size_t n)
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{
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    int i, j;
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    struct along *adst = dst;
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    const struct along *asrc = src;
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    for (i = 0; i < n/sizeof(unsigned long); i++)
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        adst[i].n = asrc[i].n;
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    for (j = 0; j < n%sizeof(unsigned long); j++)
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        ((unsigned char *)(((unsigned long *) dst) + i))[j] = ((unsigned char *)(((unsigned long *) src) + i))[j];
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    return (char *)src;
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}
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void * memcpy(void *dst, const void *src, size_t n)
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void * memcpy(void *dst, const void *src, size_t n)
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{
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{
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    int i, j;
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    int i, j;
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    if (((long)dst & (sizeof(long)-1)) || ((long)src & (sizeof(long)-1)))
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        return unaligned_memcpy(dst, src, n);
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    for (i = 0; i < n/sizeof(unsigned long); i++)
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    for (i = 0; i < n/sizeof(unsigned long); i++)
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        ((unsigned long *) dst)[i] = ((unsigned long *) src)[i];
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        ((unsigned long *) dst)[i] = ((unsigned long *) src)[i];
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    for (j = 0; j < n%sizeof(unsigned long); j++)
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    for (j = 0; j < n%sizeof(unsigned long); j++)
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        ((unsigned char *)(((unsigned long *) dst) + i))[j] = ((unsigned char *)(((unsigned long *) src) + i))[j];
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        ((unsigned char *)(((unsigned long *) dst) + i))[j] = ((unsigned char *)(((unsigned long *) src) + i))[j];