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#include <stdio.h>
#include <string.h>
#include <assert.h>
#define TOTAL 10240
#define TEST(size, type) { \
for (int i = 0; i < TOTAL; i++) { \
buffer[i] = i*seed; \
} \
memcpy(buffer, buffer+size+1, size*sizeof(type)); \
int v = 0; \
for (int i = 0; i < TOTAL; i++) { \
v += buffer[i]; \
} \
printf("final %d:%d\n", size, v); \
}
int main() {
#define RUN(type) \
{ \
type buffer[TOTAL]; \
volatile int seed = 123; \
TEST(1, type); \
TEST(2, type); \
TEST(3, type); \
TEST(4, type); \
TEST(5, type); \
TEST(6, type); \
TEST(7, type); \
TEST(8, type); \
TEST(9, type); \
TEST(10, type); \
TEST(16, type); \
TEST(32, type); \
TEST(64, type); \
TEST(128, type); \
TEST(256, type); \
TEST(512, type); \
TEST(1024, type); \
for (int x = 10; x < 100; x += 10) { TEST(x, type) }; \
}
printf("8\n");
RUN(unsigned char);
printf("16\n");
RUN(unsigned short);
printf("32\n");
RUN(unsigned);
return 1;
}
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