Math Constants : Math « Development « Flash / Flex / ActionScript

Math Constants

 

Property      Value      Description 
E             ~2.718      Base of natural logarithm 
LN10          ~2.302      Natural logarithm of 10 
LN2           ~0.693      Natural logarithm of 2 
LOG10E        ~0.434      Base-10 logarithm of E 
LOG2E         ~1.442      Base-2 logarithm of E 
PI            ~3.142      Pi 
SQRT1_2       ~0.707      Square root of 1/2 
SQRT2         ~1.414      Square root of 2

Related examples in the same category

1.	Math Class Arithmetic
2.	Math Class Trigonometry
3.	Math class includes the constant Math.PI for the number, ratio of a circle's circumference to its diameter.
4.	Finding Absolute Values
5.	Rounding and Truncating Numbers: round(), ceiling(), and floor()
6.	The ceil() method returns the next-highest integer value of the number passed it as an argument.
7.	The floor()returns the next-lowest integer.
8.	Use round(), ceiling(), and floor() to round or truncate to decimal place values.
9.	Generating Random Numbers: The random() returns a floating-point value between 0 and 0.999999, inclusive.
10.	Generate a random number within a range that does not start with 0
11.	Random integer values
12.	If you are working with one six-sided die, you want to generate a random number between 1 and 6 each time
13.	Finding the Greater or Lesser of Two Numbers
14.	The calculation for finding compound interest: newValue = originalValue * (1 + rate/cp)^(cp*t)
15.	package{
16.	The exp() method requires one parameter: a number. It then raises e (Math.E) to the power of that number.
17.	atan2(), takes two parameters (an X- and a Y-coordinate), and returns the angle formed by the right triangle measured in radians: Math.atan2(x, y)
18.	Use Math.round( ) to round a number to the nearest integer
19.	Use Math.floor( ) to round a number down
20.	Use Math.ceil( ) to round a number up.
21.	To round a number to the nearest decimal place:
22.	Use the identical math to round a number to the nearest multiple of an integer.
23.	All trig functions operate on radians, an angular unit in which radians measure a full revolution.
24.	Generate random number in a range