%=

%=（Compound modulo）

*Description
The arithmetic operator used among variables and constants. "%=" is a way of abbreviation.

*Syntax

x %= y;   //  It is equal to x = x % y;

*Parameters
x: Variable in non floating-point.
y: Variable or constant in non floating-point.

*For example

x = 9;
x %= 4;      // x = 1

*Note
The modulus operator cannot be used for floating-point data.

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