javascript 浮點運算函數
//浮點數相加
function float_add(arg1, arg2){
var r1, r2, m;
try { r1 = arg1.toString().split(".")[1].length; } catch (e) { r1 = 0; }
try { r2 = arg2.toString().split(".")[1].length; } catch (e) { r2 = 0; }
m = Math.pow(10, Math.max(r1, r2));
return (FloatMul(arg1, m) + FloatMul(arg2, m)) / m;
}
//浮點數相減
function float_sub(arg1, arg2){
var r1, r2, m, n;
try { r1 = arg1.toString().split(".")[1].length } catch (e) { r1 = 0 }
try { r2 = arg2.toString().split(".")[1].length } catch (e) { r2 = 0 }
m = Math.pow(10, Math.max(r1, r2));
n = (r1 >= r2) ? r1 : r2;
return ((arg1 * m - arg2 * m) / m).toFixed(n);
}
//浮點數相乘
function float_mul(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);
}
//浮點數相除
function float_div(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 (r1 / r2) * pow(10, t2 - t1);
}
}
function float_add(arg1, arg2){
var r1, r2, m;
try { r1 = arg1.toString().split(".")[1].length; } catch (e) { r1 = 0; }
try { r2 = arg2.toString().split(".")[1].length; } catch (e) { r2 = 0; }
m = Math.pow(10, Math.max(r1, r2));
return (FloatMul(arg1, m) + FloatMul(arg2, m)) / m;
}
//浮點數相減
function float_sub(arg1, arg2){
var r1, r2, m, n;
try { r1 = arg1.toString().split(".")[1].length } catch (e) { r1 = 0 }
try { r2 = arg2.toString().split(".")[1].length } catch (e) { r2 = 0 }
m = Math.pow(10, Math.max(r1, r2));
n = (r1 >= r2) ? r1 : r2;
return ((arg1 * m - arg2 * m) / m).toFixed(n);
}
//浮點數相乘
function float_mul(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);
}
//浮點數相除
function float_div(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 (r1 / r2) * pow(10, t2 - t1);
}
}
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