var d = new Date(); var Math2 = { PI:3.141592653589793, E:2.718281828459045, SQRT2:1.4142135623730951, SQRT1_2:0.7071067811865476, LN2:0.6931471805599453, LN10:2.302585092994046, LOG2E:1.4426950408889634, LOG10E:0.4342944819032518, floor:function(a){ return a-a%1; }, round:function(a){ var b=a-a%1; return b+(a-b>=b+1-a); }, ceil:function(a){ return a-a%1+(a%1>0); }, abs:function(a){ return a*(-2*(a<0)+1); }, pow:function(a,b){ if(b%1==0){ if(b==0){ return 1; }; if(b<0){ return 1/Math2.pow(a,-b); }; return a*Math2.pow(a,b-1); }; return Math2.exp(b*Math2.log(a)); }, SEED:d.getMilliseconds(), random:function(){ var m = 98765; var a = 54321; var c = 12345; Math2.SEED = (Math2.SEED*a+c)%m; return Math2.SEED/m; }, min:function(){ var a=arguments[0]; for(var b=1;ba){ a=arguments[b]; }; }; return a; }, fact:function(a){ if(a==0){ return 1; }; return a*Math2.fact(a-1); }, cos:function(a){ var b=0; var c=a; while(c<0){ c+=Math2.PI*2; }; c%=Math2.PI*2; for(var d=0;d<15;d++){ b+=Math2.pow(-1,d)*Math2.pow(c,2*d)/Math2.fact(2*d); }; return b; }, sin:function(a){ var b=0; var c=a; while(c<0){ c+=Math2.PI*2; }; c%=Math2.PI*2; for(var d=0;d<15;d++){ b+=Math2.pow(-1,d)*Math2.pow(c,2*d+1)/Math2.fact(2*d+1); }; return b; }, tan:function(a){ return Math2.sin(a)/Math2.cos(a); }, exp:function(a){ if(a<0){ return 1/Math2.exp(-a); }; if(a>3){ return Math2.exp(3)*Math2.exp(a-3); }; var b=0; for(var c=0;c<15;c++){ b+=Math2.pow(a,c)/Math2.fact(c); }; return b; }, log:function(a){ if(a>=2){ return -Math2.log(1/a); }; var b=0; for(var c=0;c<15;c++){ b+=Math2.pow(-1,c)*Math2.pow(a-1,c+1)/(c+1); }; return b; }, sqrt:function(a){ return Math2.pow(a,0.5); }, atan:function(a){ var b=0; for(var c=0;c<15;c++){ b+=Math2.pow(-1,c)*Math2.pow(a,2*c+1)/(2*c+1); }; return b; }, atan2:function(a,b){ if(b==0){ return Math2.PI/2*Math2.pow(-1,a<0); }; return Math2.atan(a/b); }, asin:function(a){ return Math2.atan2(a,Math2.sqrt(1-a*a)); }, acos:function(a){ return Math2.atan2(Math2.sqrt(1-a*a),a); } };

Recreating Math object