gcc -lm -Wall -Werror -Wextra -pedantic -std=c99 -O3 -o mandelbrot mandelbrot.c original: http://preshing.com/20110926/high-resolution-mandelbrot-in-obfuscated-python/

mandelbrot.c

#include <stdio.h>
#include <complex.h>
#define dc double complex
                                         dc
                                         Y(dc
                                           V,
                                      dc B,dc c){
                                        return
                               (cabs (V)<6)?(c?Y(V   *V+
                                 B,B,c-1):c):(2+c-4*cpow
                              (cabs(V),-0.4))/255;}int
                main           (){unsigned int w=1920, h=
                 1080, C=     w*h,S =C*3+26,X,A,n=C>9?9:
                   C;FILE*f=  fopen("M.bmp","wb");if(!f)
                  return 1;char buf[]={66,77,S&255,(S>>
               8)&255,(S>>16)&255,S>>24,0,0,0,0,26,0,0
,0,12,0,0,0,w&255,w>>8,h&255,h>>8,1,0,24,0};fwrite(buf,
              26,1,f);for(X=0;X<C;++X){dc T=0,t;for(A=0;
                 A<n;++A){t=Y(0,(A%3/3.+X%w+(X/w+A/3/3.-
                   h/2) /1*I)*2.5/h-2.7,255);T+=t*t;}T/=
                 9;   buf    [0]=T*80+cpow(T,9)*255-950*
                              cpow(T,99);buf[1]=T*70-880*
                                cpow(T,18)+701*cpow(T,9);
                               buf[2]=T*cpow(255,(1-cpow
                               (T,  45) *2));fwrite (buf
                                       ,3,1,f);}
                                      fclose(f);
                                        return
                                          0  ;
                                         }

...and for C newbies like myself: In Ubuntu, the gcc call given above doesn't work -- the -lm has to go at the very end (library has to be stated after the file that uses them, because --as-needed is the default for ld now)...

Thanks, nice tip!

Amazing, thanks!