Name Description
E The value of Euler's constant, approximately 2.718
LN2 The natural logarithm of 2, approximately 0.693
LN10 The natural logarithm of 10, approximately 2.302
LOG2E The base 2 logarithm of E, approximately 1.442
LOG10E The base 10 logarithm of E, approximately 0.434
PI (�) The ratio of the circumference of a circle to its diameter, approximately 3.14159
SQRT1_2 Square root of 1/2; equivalently, 1 over the square root of 2, approximately 0.707
SQRT2 Square root of 2, approximately 1.414
Using Pi
You can use this script to calculate the circumference of a circle