pi * 2 problem

[whitetiger0990]

when making a a semicircle or whatever this doesn't seem to work.
why doesn't this work?

Code:

CLS
SCREEN 9
pi = 3.141593
CIRCLE (160, 100), 40, 4, -pi * 2, -pi

I couldn't figure it out.

[Z!re]

Code:

DEFINT A-Z
CLS
SCREEN 9
CONST pi = 3.141592

a! = -pi * 2
b! = -pi

PRINT a!; b!

CIRCLE (160, 100), 40, 4, -6.28318, -3.14159

CIRCLE (160, 100), 40, 4, a!, b!

It seems that the start! or end! values can't be equal to the value said in the help.

In QB's help: -2PI to 2PI, where PI = 3.141593

In reality: -2PI to 2PI, where PI = 3.141592

Weird.