Expression

Expressions are composed of Float, variables, operators and functions. The expression is evaluated to a value of type Float.

Operators

The operators that can be used are:

• +: Addition
• -: Subtraction
• *: Multiplication
• /: Division
• (): Parentheses, used to change the order of operations
• ==: Is equal to, 1 if true, 0 otherwise.
• ! =: If not equal, value is 1 if true, 0 otherwise.
• >: Is more than, 1 if true, 0 otherwise.
• <: Is less than, 1 if true, 0 otherwise.
• >=: Is more than or equal to, 1 if true, 0 otherwise.
• <=: Is less than or equal to, 1 if true, 0 otherwise.

Functions

The functions that can be used are:

• sin(x): Sine function
• cos(x): Cosine function
• tan(x): Tangent function
• abs(x): Absolute value function
• exp(x): Exponential function
• atan2(x): Inverse tangent function
• ln(x): Natural logarithmic function
• sig(x): Sign function, returns 1 when x is +0 or a positive number, returns -1 when it is -0 or a negative number
• step(x, y): Step function, returns 1 when x < y is 0, otherwise returns 0
• floor(x): Floor function
• ceil(x): Ceiling function
• round(x): Rounding function
• max(x, y...) : Maximum function
• min(x, y...): Minimum function
• clamp(x, min, max): Clamp x between min and max

The radian system is used for both trigonometric and inverse trigonometric functions.