Thanks for the code. However, and perhaps I'm missing something, I'm
trying to convert a string to a double.
Bradly J. Barton wrote:
> I use this function.. it is based on source from an old post to this forum:
>
> void FloatToString (double value, char * buffer, int round)
> {
> // this function came from a combination of Thiago Rossato and
> // Noah Young via the Palm Developer Forum
> long iValue;
> float dDecimal;
> long iDecValue;
> int i;
> char sResult[50];
> char sDecimal[50];
>
> iValue = value;
>
> dDecimal = value - iValue;
>
> // if dDecimal >= 1, then iValue should actually be greater by dDecimal
> // this happens in situations of numbers that can't be accurately
> // represented as a double.. (7 is 6.9999999997, but dDecimal is 1 after
> // the above)
> if (dDecimal >= 1)
> {
> i = dDecimal;
> iValue = iValue + i;
> dDecimal = dDecimal - i;
> }
> // Make sure rounding will still work if value is negative
> if (value < 0)
> dDecimal = -dDecimal;
>
> if (dDecimal < 0.000000001) dDecimal = 0;
>
> if (!round && dDecimal >= 0.5) iValue++;
>
> // Convert integer portion to string
> StrIToA(sResult, iValue);
> if (StrLen(sResult) < 1) StrCopy(sResult, "0");
> if (round)
> {
> StrCat(sResult, ".");
>
> // Round decimal portion
> for (i = 1; i <= round; i++)
> dDecimal = dDecimal * 10;
>
> iDecValue = dDecimal;
> if (dDecimal - iDecValue >= 0.5) iDecValue++;
>
> // Add decimal portion
> StrIToA (sDecimal, iDecValue);
>
> // Add leading zeros if neccessary
> if (StrLen (sDecimal) < round)
> for (i = 1; i <= round - StrLen(sDecimal); i++)
> StrCat (sResult, "0");
> StrCat (sResult, sDecimal);
> }
>
> // Copy into return string
> StrCopy (buffer, sResult);
> }
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