pxt-calliope/olddocs/js/math.md

Math Library

Functions in the math library.

@parent js/language

The math library includes math related functions that you can use with Numbers.

• In the TouchDevelop editor, click math to access the functions described below
• In the Block editor, click maths on the left to see the available blocks

The functions available in Touch Develop are:

abs

math -> abs (x : Number) returns Number

returns the absolute value of input parameter x

basic.showNumber(math.abs(-7), 150)

clamp

math -> clamp (min : Number, max : Number, value : Number) returns Number

limits a number to a range (between a min and max number); returns min if value is < min; returns max if value is > max; otherwise, returns value.

basic.showNumber(td.clamp(5, 9, 12), 150)

max

math -> max (x : Number, y : Number) returns Number

returns the larger of two input numbers (x and y)

basic.showNumber(Math.max(9, 7), 150)

min

math -> min (x : Number, y : Number) returns Number

returns the smaller of two input numbers (x and y)

basic.showNumber(Math.min(9, 7), 150)

mod

math -> mod (x : Number, y : Number) returns Number

returns the integer modulus/remainder resulting from the division of the number x by the number y

basic.showNumber(math.mod(9, 7), 150)

pow

math -> pow (base : Number, exp : Number) returns Number

returns the value of the number base raised to the power exp

basic.showNumber(math.pow(3, 3), 150)

random

math -> random (limit : Number) returns Number

returns a random Number between 0 and the parameter limit - 1

basic.showNumber(Math.random(10), 150)

sign

math -> sign (x : Number) returns Number

returns the sign of input parameter x

basic.showNumber(math.sign(-7), 150)

Lessons

flipping bird, catch the egg game

See also

Bits library, TouchDevelop documentation, Number