Created
November 10, 2013 04:40
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gcc -lm -Wall -Werror -Wextra -pedantic -std=c99 -O3 -o mandelbrot mandelbrot.c original: http://preshing.com/20110926/high-resolution-mandelbrot-in-obfuscated-python/
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| #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 ; | |
| } |
Thanks, nice tip!
Amazing, thanks!
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...and for C newbies like myself: In Ubuntu, the
gcccall given above doesn't work -- the-lmhas to go at the very end (library has to be stated after the file that uses them, because--as-neededis the default forldnow)...