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@onlabsorg/swan-js

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A simple yet powerful expression language written in JavaScript

github.com/onlabsorg/swan-js

onlabsorg/swan-js

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math module ============================================================================ This module contains mathematical functions and constants. Unless specified otherwise, all the functions of this library assume that their parameter is an item (1-d tuple). If more that one item is passed to a function, only the first item will be used and the others will be ignored. Math constants ------------------------------------------------------------------------ The following constants are defined: - `math.INFINITY`: Infinity. - `math.PI`: Ratio of the a circle's circumference to its diameter, approximately 3.14159. - `math.E`: Euler's constant and the base of natural logarithms, approximately 2.718. Trigonometric functions ------------------------------------------------------------------------ The Numb namespace contains the following trigonometric functions: - `math.cos`: Returns the cosine of a number. - `math.sin`: Returns the sine of a number. - `math.tan`: Returns the tangent of a number. - `math.acos`: Returns the arccosine of a number. - `math.asin`: Returns the arcsine of a number. - `math.atan`: Returns the arctangent of a number. If the argument is not a number, these functions return `Undefined('Number')`. Hyperbolic functions ------------------------------------------------------------------------ The Numb namespace contains the following hyperbolic functions: - `math.cosh`: Returns the hyperbolic cosine of a number. - `math.sinh`: Returns the hyperbolic sine of a number. - `math.tanh`: Returns the hyperbolic tangent of a number. - `math.acosh`: Returns the hyperbolic arccosine of a number. - `math.asinh`: Returns the hyperbolic arcsine of a number. - `math.atanh`: Returns the hyperbolic arctangent of a number. If the argument is not a number, these functions return `Undefined('Number')`. Rounding ------------------------------------------------------------------------ The following functions perform number rounding. - `math.ceil`: Returns the smallest integer greater than or equal to a number. - `math.floor`: Returns the largest integer less than or equal to a number. - `math.trunc`: Returns the integer part of the number x, removing any fractional digits. - `math.round`: Returns the value of a number rounded to the nearest integer. If the argument is not a number, these functions return `Undefined('Number')`. math.abs - function ------------------------------------------------------------------------ Returns the absolute value of a number. If the argument is not a number, this functions return `Undefined('Number')`. math.exp - function ------------------------------------------------------------------------ Returns E^x, where x is the argument, and E is Euler's constant. If the argument is not a number, this functions return `Undefined('Number')`. math.log - function ------------------------------------------------------------------------ Returns the natural logarithm of a number. If the argument is not a number, this functions return `Undefined('Number')`. math.log10 - function ------------------------------------------------------------------------ Returns the base 10 logarithm of a number. If the argument is not a number, this functions return `Undefined('Number')`. math.max - function ------------------------------------------------------------------------ Returns the largest of zero or more numbers. If any argument is not a number, this functions return `Undefined('Number')`. math.min - function ------------------------------------------------------------------------ Returns the smallest of zero or more numbers. If any argument is not a number, this functions return `Undefined('Number')`. math.random - function ------------------------------------------------------------------------ Returns a pseudo-random number between 0 and the given argument. If the argument is not a number, this functions return `Undefined('Number')`. math.sqrt - function ------------------------------------------------------------------------ Returns the positive square root of a number. If any argument is not a number, this functions return `Undefined('Number')`.