01 [...]
02   // Matrix vector multiplication in C
03
04   // Matrix:
05   float matrix[4][4]={
06     { 2.5, 3.4, 7.9, 1.2 },
07     { 1.2, 7.7, 3.7, 0.5 },
08     { 3.1, 8.2, 7.1, 3.6 },
09     { 7.8, 0.4, 1.2, 5.2 }
10   };
11 
12   // Vector:
13   float vector[4]={ 1.0, 1.0, 1.0, 1.0 };
14
15   // Compute result:
16   float result[4]={0};
17   int i,j;
18   for (i=0;i<4;i++)
19   {
20     result[i]=0;
21     for(j=0;j<4;j++)
22     {
23       result[i] += matrix[i][j] * vector[j];
24     }
25   }
26 }