package math

import "math"
import "html/template"
import "git.tebibyte.media/sashakoshka/step"

var _ step.FuncProvider = new(Provider)

// Provider provides math functions.
type Provider struct {
	
}

// Package fulfills the step.Provider interface.
func (this *Provider) Package () string {
	return "math"
}

// FuncMap fulfills the step.FuncProvider interface.
func (this *Provider) FuncMap () template.FuncMap {
	return template.FuncMap {
		"add":  funcAdd,
		"sub":  funcSub,
		"mul":  funcMul,
		"div":  funcDiv,
		"pow":  math.Pow,
		"sqrt": math.Sqrt,
	}
}

func funcAdd (a, b float64) float64 {
	return a + b
}

func funcSub (a, b float64) float64 {
	return a - b
}

func funcMul (a, b float64) float64 {
	return a * b
}

func funcDiv (a, b float64) float64 {
	return a / b
}