Converting some C# code to Javascript [duplicate]

Question

I'm working on converting some C# code to Javascript. I have the following code snippet.

float goldenRatioConjugate = 0.618033988749895f;
float currentHue = (float) random.NextDouble();

currentHue += goldenRatioConjugate;
currentHue %= 1.0f;

My question is I don't understand what the last line is doing? I've never seen a modulo operation with a float.

Answer 1

It will set currentHue to the fractional portion of currentHue

For example:

• 1.5 will become 0.5
• 3.488 will become 0.488

Answer 2

Let suppose

currentHue = 2.5f;
currentHue = (currentHue % 1.0f); /* Output will be 0.5*/

It will first calculate modulus and then assign it to the currentHue which is 0.5 in the above case

currentHue %= 1.0f;

you can write above line as below

currentHue = (currentHue  % 1.0f);