Function Question: (sqwv)

[JayPro]

What does this function do exactly??

Since I suck at mathematics in general, I could use some help extrapolating the subjectively perceived gibberish required to explain the concept to what I can actually see it doing.


Thanks.

[jerohm]

Code: Select all

Aspc=1             // so it is visible in frame
ConB=1

// sqwv(x) :
// return 1 if abs&#40;X&#41; <= 1.0, otherwise 0
//  or MORE ACCURATELY a square PULSE &#91;-1 ... 1&#93;

A0="&#40;2*s-1&#41;*2"         // &#91;-2 ... 2&#93;, inclusive

X0="A0"
Y0="sqwv&#40;A0&#41;/2"       // divided by 2 so it is visible in frame

Vers=500

Code: Select all

Aspc=1
ConB=1

// REAL(static) square wave

A0="(2*s-1)"    // [-1 ... 1], inclusive
A1=10	        // Pulse Count
A2="A0*Pi * A1" // Cycles

X0="A0"
Y0="(pos(sign(sin(A2))) -.5)/A1"	// centered about Y axis

Vers=500

Code: Select all

Aspc=1
ConB=1

// REAL(moving) square wave

A0="(2*s-1)"    // [-1 ... 1], inclusive
A1=2 	        // Pulse Count
A2="A0*Pi * A1" // Cycles

X0="A0"
Y0="(pos(sign(sin(A2 - A1*t))) -.5)/A1"	// centered about Y axis

Vers=500

are we good??

[ShohS]

I think its a square wave that doesn't loop

[DanPin]

I think its a square wave that doesn't loop

Well, you're absolutely right. The abbreviation 'sqwv' can mean 'square wave'. In the Documentation, under Config Programming | Logic/Discrete it technically explains "returns 1 if |x| <= 1.0 and 0 otherwise". This should make sense to you.