Can't get StrToReal to Work

[SpiritualMadMan]

I have tried everything I know to get this conversion to work.

Yes, the example: -36.5 works

But, as soon as I add an exponent it fails.

The Real Variable type is supposed to be good for +/- 1.7E308

All I need is engineering range fro Femto to Giga...

Using PTD 2.1 of Feb 6, 2011

An example of accepted ranges and formats for the StrToReal Function would be most appreciated.

[john]

Hello-

This is a bug in Phantom and will be fixed in a maintenance release. In the mean time, you can use a user defined function as such:

Code: Select all

# Temporary fix to StrToReal bug
function real MyStrToReal(string s){
  string parts = split(s, "E");
  if(length(parts) == 1){
    return StrToReal(parts[0]);
  }else if(length(parts) == 2){
    real base = StrToReal(parts[0]);
    real exp = StrToReal(parts[1]);
    return base * 10.0^exp;
  }else{
    exception e;
    e.SetError("Invalid number: " + s);
    e.throw();
  }

  return 0.0;
}

real r;
disp(MyStrToReal("10.0"));
disp(MyStrToReal("-10.6"));
disp(MyStrToReal("1E+6"));
disp(MyStrToReal("1E-6"));
disp(MyStrToReal("12.421E60"));
disp(MyStrToReal("12.421E-60"));

r = MyStrToReal("12.421E-60")
disp(format("%E", r));


You can put the function in a .fun file and include it whenever you need to do a StrToReal (see 'include' in the Phantom help).

Sorry for any inconvenience this has caused, and I hope this helps!

-John

[SpiritualMadMan]

Works as advertised!

Thanks John!