View difference between Paste ID: W1Vrk8dx and TxdHeQZY

 #include <emmintrin.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <time.h>
 
 #define NEAR 10
 #define T1 100
 #define T2 1000
 #define T3 10000
 
 int func(int Di) {
   if (Di <= -T3) return  -4;
   if (Di <= -T2) return  -3;
   if (Di <= -T1) return  -2;
   if (Di < -NEAR)  return  -1;
   if (Di <= NEAR) return   0;
   if (Di < T1)   return   1;
   if (Di < T2)   return   2;
   if (Di < T3)   return   3;
   return  4;
 }
 
 int funcX(int Di) {
   int cmp_m3 = -(Di > -T3);
   int cmp_m2 = -(Di > -T2);
   int cmp_m1 = -(Di > -T1);
   int cmp_p0 = -(Di > NEAR);
   int reduce_true = cmp_m3 + cmp_m2 + cmp_m1 + cmp_p0;
   int cmp_m0 = -(Di < -NEAR);
   int cmp_p1 = -(Di < T1);
   int cmp_p2 = -(Di < T2);
   int cmp_p3 = -(Di < T3);
   int reduce_false = cmp_p3 + cmp_p2 + cmp_p1 + cmp_m0;
   return reduce_false - reduce_true;
 }
 
 __m128i func4(__m128i D) {
   __m128i cmp_m3 = _mm_cmpgt_epi32(D, _mm_set1_epi32(-T3));
   __m128i cmp_m2 = _mm_cmpgt_epi32(D, _mm_set1_epi32(-T2));
   __m128i cmp_m1 = _mm_cmpgt_epi32(D, _mm_set1_epi32(-T1));
   __m128i cmp_p0 = _mm_cmpgt_epi32(D, _mm_set1_epi32(NEAR));
   __m128i reduce_true = _mm_add_epi32(_mm_add_epi32(cmp_m3, cmp_m2), _mm_add_epi32(cmp_m1, cmp_p0));
   __m128i cmp_m0 = _mm_cmplt_epi32(D, _mm_set1_epi32(-NEAR));
   __m128i cmp_p1 = _mm_cmplt_epi32(D, _mm_set1_epi32(T1));
   __m128i cmp_p2 = _mm_cmplt_epi32(D, _mm_set1_epi32(T2));
   __m128i cmp_p3 = _mm_cmplt_epi32(D, _mm_set1_epi32(T3));
   __m128i reduce_false = _mm_add_epi32(_mm_add_epi32(cmp_p3, cmp_p2), _mm_add_epi32(cmp_p1, cmp_m0));
   return _mm_sub_epi32(reduce_false, reduce_true);
 }
 
-    data_i[i] = rand() - 16768;
+
 
 static union {
   int data_i[4 * COUNT];
   __m128i data_r[COUNT];
 };
 
 static union {
   int res_i[4];
   __m128i res_r;
 };
 
 int main() {
   for (int i = 0; i < 4*COUNT; i++)
     data_i[i] = rand() % 32768 - 16768;
 
   for (int i = 0; i < COUNT; i++) {
     int corr[4];
     for (int j = 0; j < 4; j++)
       corr[j] = func(data_i[4*i+j]);
 
     res_r = func4(data_r[i]);
     for (int j = 0; j < 4; j++)
       if (corr[j] != res_i[j])
         printf("Wrong!");
 
     for (int j = 0; j < 4; j++)
       res_i[j] = funcX(data_i[4*i+j]);
     for (int j = 0; j < 4; j++)
       if (corr[j] != res_i[j])
         printf("Wrong!");
   }
 
   {
     int start = clock();
     int sum = 0;
     for (int q = 0; q < 10000; q++) {
       for (int i = 0; i < 4*COUNT; i++)
         sum += func(data_i[i]);
     }
     printf("Time = %0.3lf   (%d)\n", double(clock() - start) / CLOCKS_PER_SEC, sum);
   }
 
   {
     int start = clock();
     __m128i sum = _mm_setzero_si128();
     for (int q = 0; q < 10000; q++) {
       for (int i = 0; i < COUNT; i++)
         sum = _mm_add_epi32(sum, func4(data_r[i]));
     }
     res_r = sum;
     int rsum = res_i[0] + res_i[1] + res_i[2] + res_i[3];
     printf("Time = %0.3lf   (%d)\n", double(clock() - start) / CLOCKS_PER_SEC, rsum);
   }
 
   return 0;
 }