#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <sys/time.h>

void x_none(char * restrict a, const char * restrict b);
void x_memcpy(char * restrict a, const char * restrict b);
void x_strncpy(char * restrict a, const char * restrict b);
void x_strlcpy(char * restrict a, const char * restrict b);
void x_strlenmemcpy(char * restrict a, const char * restrict b);

#ifndef ALIGN
#  define ALIGN 0
#endif

int main ()
{
    char *a = malloc(N * 64 + ALIGN + ALIGN);
    char *b = malloc(N * 64 + ALIGN + ALIGN);

    if (a == 0 || b == 0)
        printf("malloc failed.\n");

    struct timeval start, end;
    int i;

    for (i = 0; i < N; i++)
        strncpy(&b[i * 64 + ALIGN], STRING, 64);

    printf("NONE:    ");
    gettimeofday(&start, 0);
    for (i = 0; i < 100000000; i++)
        x_none(&a[(i % N) * 64 + ALIGN], &b[(i % N) * 64 + ALIGN]);
    gettimeofday(&end, 0);
    printf("%10d us\n", (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_usec - start.tv_usec));

    printf("MEMCPY:  ");
    gettimeofday(&start, 0);
    for (i = 0; i < 100000000; i++)
        x_memcpy(&a[(i % N) * 64 + ALIGN], &b[(i % N) * 64 + ALIGN]);
    gettimeofday(&end, 0);
    printf("%10d us\n", (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_usec - start.tv_usec));

    printf("STRNCPY: ");
    gettimeofday(&start, 0);
    for (i = 0; i < 100000000; i++)
        x_strncpy(&a[(i % N) * 64 + ALIGN], &b[(i % N) * 64 + ALIGN]);
    gettimeofday(&end, 0);
    printf("%10d us\n", (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_usec - start.tv_usec));

    printf("STRLCPY: ");
    gettimeofday(&start, 0);
    for (i = 0; i < 100000000; i++)
        x_strlcpy(&a[(i % N) * 64 + ALIGN], &b[(i % N) * 64 + ALIGN]);
    gettimeofday(&end, 0);
    printf("%10d us\n", (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_usec - start.tv_usec));

    printf("LENCPY:  ");
    gettimeofday(&start, 0);
    for (i = 0; i < 100000000; i++)
        x_strlenmemcpy(&a[(i % N) * 64 + ALIGN], &b[(i % N) * 64 + ALIGN]);
    gettimeofday(&end, 0);
    printf("%10d us\n", (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_usec - start.tv_usec));

    return 0;
}