Math

Arithmetic on values that may arrive as integers, floats or numeric strings: add, subtract, multiply, divide, modulo, absolute value, minimum, maximum and clamping. Division and modulo by zero are errors.

Reference

Functions

abs

abs returns the absolute value of a number.

{{ abs -300 }}  → 300

add

add adds two numbers. Returns int64 when the result is whole, float64 otherwise.

{{ add 8080 1000 }}  → 9080

clamp

clamp constrains a value to the range [lo, hi]. Equivalent to max(lo, min(hi, val)).

{{ clamp 25 1 20 }}  → 20
{{ clamp 0 1 20 }}   → 1

div

div divides the first number by the second. Returns an error on division by zero.

{{ div 8 4 }}  → 2

max

max returns the larger of two numbers. Use to enforce a minimum floor.

{{ max .deployment.spec.replicas 5 }}  → 5

min

min returns the smaller of two numbers. Use to cap a value at an upper bound.

{{ min .deployment.spec.replicas 10 }}  → 3

mod

mod returns the remainder of dividing the first number by the second, as an integer (int64). An error when the second is zero.

{{ mod 8080 100 }}  → 80

mul

mul multiplies two numbers.

{{ mul .deployment.spec.replicas 2 }}  → 6

sub

sub subtracts the second number from the first.

{{ sub .deployment.spec.replicas 1 }}  → 2