How to solve the floating point computing BUG in js _ javascript skills

This article mainly introduces how to solve the floating point computing BUG in js. If you need it, you can refer to it and hope to help you with projects that have been used in the past, I found this code on the Internet before, but there will still be bugs in division and addition operations under specific conditions. I am slightly optimized.

The Code is as follows:

// Division function, used to obtain accurate division results
// Note: the division result of javascript has an error, which is obvious when two floating point numbers are separated. This function returns a more precise division result.
// Call: accDiv (arg1, arg2)
// Return value: the exact result of dividing arg1 by arg2
Function accDiv (arg1, arg2 ){
Var t1 = 0, t2 = 0, r1, r2;
Try {t1 = arg1.toString (). split (".") [1]. length} catch (e ){}
Try {t2 = arg2.toString (). split (".") [1]. length} catch (e ){}
With (Math ){
R1 = Number (arg1.toString (). replace (".",""))
R2 = Number (arg2.toString (). replace (".",""))
Return accMul (r1/r2), pow (10, t2-t1 ));
}
}

The Code is as follows:

// Multiplication function, used to obtain accurate multiplication results
// Note: there is an error in the javascript multiplication result, which is obvious when two floating point numbers are multiplied. This function returns a more accurate multiplication result.
// Call: accMul (arg1, arg2)
// Return value: the exact result of multiplying arg1 by arg2
Function accMul (arg1, arg2 ){
Var m = 0, s1 = arg1.toString (), s2 = arg2.toString ();
Try {m + = s1.split (".") [1]. length} catch (e ){}
Try {m + = s2.split (".") [1]. length} catch (e ){}
Return Number (s1.replace (".", "") * Number (s2.replace (".", "")/Math. pow (10, m)
}

The Code is as follows:

// Intermediate solution for addition operations
Function accAdd (arg1, arg2 ){
Var r1, r2, m, c;
Try {r1 = arg1.toString (). split (".") [1]. length} catch (e) {r1 = 0}
Try {r2 = arg2.toString (). split (".") [1]. length} catch (e) {r2 = 0}
C = Math. abs (r1-r2 );
M = Math. pow (10, Math. max (r1, r2 ))
If (c> 0 ){
Var cm = Math. pow (10, c );
If (r1> r2 ){
Arg1 = Number (arg1.toString (). replace (".",""));
Arg2 = Number (arg2.toString (). replace (".", "") * cm;
}
Else {
Arg1 = Number (arg1.toString (). replace (".", "") * cm;
Arg2 = Number (arg2.toString (). replace (".",""));
}
}
Else {
Arg1 = Number (arg1.toString (). replace (".",""));
Arg2 = Number (arg2.toString (). replace (".",""));
}
Return accDiv (arg1 + arg2), m );
}