lyng/docs/math.md

Operators

Precedence

Same as in C++.

Priority	Operations
Highest 0	power, not, calls, indexing, dot,...
1	% * /
2	+ -
3	bit shifts (NI)
4	<=> (NI)
5	<= >= < >
6	== !=
7	bitwise and & (NI)
9	bitwise or | (NI)
10	&&
11 lowest	||

• (NI) stands for not yet implemented.

Operators

+ - * / % : if both operand is Int, calculates as int. Otherwise, as real:

// integer division:
3 / 2
>>> 1

but:

3 / 2.0
>>> 1.5

Round and range

The following functions return its argument if it is Int, or transformed Real otherwise.

name	description
floor(x)	Computes the largest integer value not greater than x
ceil(x)	Computes the least integer value value not less than x
round(x)	Rounds x

Scientific functions

name	meaning
sin(x:Real): Real	sine

For example:

sin(π/2)
>>> 1.0

Scientific constant

name	meaning
Math.PI: Real or π	3.1415926...