A small program producing an approximated ASCII art of the Twitter logo via a tiny NN

twitter_logo_nn.c

#include <stdio.h>
#include <math.h>
#define F float
F f[]={-.1,-.1,1.7,.8,-.11,-6,.4,-.6,.15,-.3,.22,-3.1,-.1,-.06,3.2,.57,-1.1,19,-176,-4.8,-7.2,43,-86,40,48,65,34,803,39,9.65,-17,-33,-33,16,1167,63,-23,41,-22,9,.56,-.08,4.76,-8,-.28,.63,-1182,-7.27,26.6,-1213,198,5.3,-8.25,38.4,.22,-.78,-903,-7.4,-.26,.42,47.5,33.7,36.5,-184,14.5,-90,3};F o[15];F R(F A,F U){o[0]=A;o[1]=U;F a=0;int k=2,m=3,n=0,z=0,l=1;for(int j=0;j<67;j++){if(j==18)n=2,z=3,m=7,l=-17;if(j==60)n=8,l=-59;if((j+l)%m){a+=f[j]*o[n+(j+z)%m];}else{o[k++]=(F)1/(1+exp(-(a+f[j])));a=0;}}return o[14];}int main(){for(int i=0;i<2201;i++){putchar(R(i%55,i/55-5)>.5?58:32);if(!(i%55))putchar(10);}}