my-string-to-float

C++ implementation

struct State {
};

{{ GENERATED_CODE }}

void evaluate(Context ctx) {
    auto state = getState(ctx);
    auto xString = getValue<input_IN>(ctx);

    int N = length(xString) + 1;
    char cString[N];
    int b;
    int count;
    int len;
    Number roundout;
    for(int i=0;i<N;i++)
    cString[i]=0;
    dump(xString,cString);
    Number nout= atof(cString);
    
   for (b = floor(nout); b>0; b = (b / 10)){
       count++;
   }
    if (round(nout) != nout){
        len = N-2;
    }
    else{
      len =  N - 1;
    }
   
    len = ((round(len) - round(count))+1);
    roundout = round(pow(10, floor(len)));
    nout = (round(nout*roundout)/roundout);
    emitValue<output_OUT>(ctx, nout);

}