A 64-bit double can represent integer +/- 253 exactly. Given this fact, I choose to use a double type as a single type for all my types, since my largest integer is an unsigned 32-bit number. But now I have to print these pseudo integers, but the problem is they are also mixed in with … Read more
randrange(start, stop) only takes integer arguments. So how would I get a random number between two float values? 5 s 5 Use random.uniform(a, b): >>> random.uniform(1.5, 1.9) 1.8733202628557872
In the following program you can see that each value slightly less than .5 is rounded down, except for 0.5. for (int i = 10; i >= 0; i–) { long l = Double.doubleToLongBits(i + 0.5); double x; do { x = Double.longBitsToDouble(l); System.out.println(x + ” rounded is ” + Math.round(x)); l–; } while (Math.round(x) … Read more
What would be the most efficient way to compare two double or two float values? Simply doing this is not correct: bool CompareDoubles1 (double A, double B) { return A == B; } But something like: bool CompareDoubles2 (double A, double B) { diff = A – B; return (diff < EPSILON) && (-diff < … Read more
How does one round a number UP in Python? I tried round(number) but it rounds the number down. Example: round(2.3) = 2.0 and not 3, as I would like. The I tried int(number + .5) but it round the number down again! Example: int(2.3 + .5) = 2 28 s 28 The ceil (ceiling) function: … Read more
I have the following dummy test script: function test() { var x = 0.1 * 0.2; document.write(x); } test(); This will print the result 0.020000000000000004 while it should just print 0.02 (if you use your calculator). As far as I understood this is due to errors in the floating point multiplication precision. Does anyone have … Read more
I want to use a Track-Bar to change a Form‘s opacity. This is my code: decimal trans = trackBar1.Value / 5000; this.Opacity = trans; When I build the application, it gives the following error: Cannot implicitly convert type decimal to double I have tried using trans and double, but then the Control doesn’t work. This … Read more
I have two integer values a and b, but I need their ratio in floating point. I know that a < b and I want to calculate a / b, so if I use integer division I’ll always get 0 with a remainder of a. How can I force c to be a floating point … Read more
Is there a way to step between 0 and 1 by 0.1? I thought I could do it like the following, but it failed: for i in range(0, 1, 0.1): print(i) Instead, it says that the step argument cannot be zero, which I did not expect. 34 s 34
According to html5.org, the “number” input type’s “value attribute, if specified and not empty, must have a value that is a valid floating point number.” Yet it is simply (in the latest version of Chrome, anyway), an “updown” control with integers, not floats: <input type=”number” id=”totalAmt”></input> Is there a floating point input element native to … Read more