Is there a more accurate way to do a float and or double to string than...

to!string(float);

As that seems to limit itself to 6 digits.

On Tue, 24 Feb 2015 20:04:04 +0000, Almighty Bob wrote:

> Is there a more accurate way to do a float and or double to string than...
> 
> to!string(float);
> 
> As that seems to limit itself to 6 digits.

Use std.string.format or std.format.formattedWrite.  std.format contains a description of the various format specifiers.  You'll probably want something like "%.12f", which formats a floating point number with 12 digits of precision.

On Tue, Feb 24, 2015 at 08:04:04PM +0000, Almighty Bob via Digitalmars-d-learn wrote:
> Is there a more accurate way to do a float and or double to string than...
> 
> to!string(float);
> 
> As that seems to limit itself to 6 digits.

What about std.format.format("%.12f", myFloat)?

Or, if you like:

	string floatToString(F)(F f)
		if (isFloatingPoint!F)
	{
		// Extract as many digits as are available for this
		// type.
		return std.format.format("%.*f", F.dig, f);
	}


T

-- 
If you want to solve a problem, you need to address its root cause, not just its symptoms. Otherwise it's like treating cancer with Tylenol...

On Tuesday, 24 February 2015 at 20:08:55 UTC, Justin Whear wrote:
> On Tue, 24 Feb 2015 20:04:04 +0000, Almighty Bob wrote:
>
>> Is there a more accurate way to do a float and or double to string
>> than...
>> 
>> to!string(float);
>> 
>> As that seems to limit itself to 6 digits.
>
> Use std.string.format or std.format.formattedWrite.  std.format contains
> a description of the various format specifiers.  You'll probably want
> something like "%.12f", which formats a floating point number with 12
> digits of precision.

that did it, thanks,

:)

Just to clarify what i needed was...

%.8g  or  %.7e

Significant digits, or fixed width scientific form. I needed more significant digits.

%.8f controls how many digits to print after the decimal point, which is not the same thing.