Math.Floor rounds down, Math.Ceiling rounds up, and Math.Truncate rounds towards zero. Thus, Math.Truncate is like Math.Floor for positive numbers, and like Math.Ceiling for negative numbers. Here's the reference.

For completeness, Math.Round rounds to the nearest integer. If the number is exactly midway between two integers, then it rounds towards the even one. Reference.

See also: Pax Diablo's answer. Highly recommended!

• Math.ceil and Math.floor returning same value

  I have a double (23.46) And using the methods Math.ceil and Math.floor and parsing my double to these methods, I get the same value returned to me, which is 23... I want it to be rounded off t…

• What is the difference between functions in math and functions in programming?

  What is the difference between functions in math and functions in programming?

• Difference between "Math.DivRem" and % operator?

  What is the difference between System.Math.DivRem() and the % operator?

• Math.round() and Math.floor() problem with setInterval()

  I'm having problem with Math.round() and Math.floor() in setInterval() function by using jQuery. This is my code: var number1 = 400; var up_up = setInterval( function (){ number1 = parseFloa…

• Is Math.floor acting like Math.round in ActionScript 3?

  Here is the problem: var p:int = 0; var n:Number = 0; n = 32.999999999999999; p = Math.floor(n); trace(p); // returns 33 n = 32.11111111111111; p = Math.floor(n); trace(p); // returns 32 I w…

• Use Math.Pow and keep the sign?

  Is there anyway I can do this without using ifs? Like I want to do Math.Pow(-5f,2f) to come out as -25 not 25?

• Is there any difference between a math invention and a math discovery?

  From wikipekia: The calculus controversy was an argument between 17th-century mathematicians Isaac Newton and Gottfried Leibniz (begun or fomented in part by their disciples and associates –…

• Asp.net C# math problem

  I'm trying to build a "simple" web app that calculates either a male or females body fat % based on the U.S. Navy's circumference formula. I have the majority of the app completed at this point. How…

• Integer math in c#

  I have a menu of product brands that I want to split over 4 columns. So if I have 39 brands, then I want the maximum item count for each column to be 10 (with a single gap in the last column. Here's…

• Show notification every step of difference between two values (Math Question)

  I have to answer this question that seems a riddle ... I don't know if there's a real solution or it's impossible... Questions : Having two double values, one is the total amount of money in the …