package main

import (
	"fmt"
	"math"
	"os"
	"runtime"
	"sync"
)

const version = "v1.0.1"

const usage = "heat [-v|--verbose]"

func heat() {
	var t float64 = math.MaxFloat64
	for {
		t /= 2.0
		if t < math.SmallestNonzeroFloat32 {
			t = math.MaxFloat64
		}
	}
}

func main() {
	if len(os.Args) > 1 {
		if verbose(os.Args) {
			fmt.Printf("heat version %v\n", version)
			os.Exit(0)
		} else {
			fmt.Fprintf(os.Stderr, "usage: %v\n", usage)
			os.Exit(1)
		}
	}
	wg := sync.WaitGroup{}
	wg.Add(1)
	for i := 0; i < runtime.NumCPU(); i++ {
		go heat()
	}
	wg.Wait()
}

func verbose(args []string) bool {
	r := false
	for _, arg := range args {
		switch arg {
		case "-v", "-version", "--version", "v", "version":
			r = true
		}
	}
	return r
}