mandelbrot.c

        
        
        #include "stdio.h"
        #include "stdlib.h"
        
        // This function will be available in the DLL.
        EXPORT void __stdcall mandelbrot(int size,
                                         int iterations,
                                         int *col)
int main(void)
 {
           // Variable declarations.
            int i, j, n, index;
            double cx, cy;
            double z0, z1, z0_tmp, z0_2, z1_2;
            
            // Loop within the grid.
            for (i = 0; i < size; i++)
            {
                cy = -1.5 + (double)i / size * 3;
                for (j = 0; j < size; j++)
                {
                    // We initialize the loop of the 
                    // system.
                    cx = -2.0 + (double)j / size * 3;
                    index = i * size + j;
                    // Let's run the system.
                    z0 = 0.0;
                    z1 = 0.0;
                    for (n = 0; n < iterations; n++)
                    {
                        z0_2 = z0 * z0;
                        z1_2 = z1 * z1;
                        if (z0_2 + z1_2 <= 100)
                        {
                            // Update the system.
                            z0_tmp = z0_2 - z1_2 + cx;
                            z1 = 2 * z0 * z1 + cy;
                            z0 = z0_tmp;
                            col[index] = n;
                        }
                        else
                        {
                            break;
                        }
                    }
                }
            }
        }