float <> string
Posted: Tue Mar 29, 2011 3:05 pm
Conversion between floats & strings. No error checking on stringToFloat ( neither can you use the E keyword ), and floatToString is quick & dirty ( so the string might be off a fraction ).
Code: Select all
string floatToStr(float F, int D) // D = Number of decimals
{
string S = F < 0 ? "-" : "";
F = abs(F);
int N = floor(F);
S += intToStr(N)+".";
F -= N;
for(int B=0; B<D; B++)
{
F *= 10;
N = floor(F);
S += intToStr(N);
F -= N;
}
return S;
}
//
float strToFloat(string S)
{
int L, C, A, N, D;
N = D = 0;
L = length(S);
float F = 0;
for(C=0; C<L; C++)
{
A = ord(subStr(S,C,1));
switch(A)
{
case 45: N = 1; break;
case 46: D = 1; break;
default:
if(D)
{
F += (A-48)/pow(10,D);
D++;
}
else
{
F *= 10;
F += A-48;
}
}
}
if(N)F = 0-F;
return F;
}