using BenchmarkDotNet.Attributes;
using System;

namespace FloatBenchmark
{
    public class TestRunner
    {
        const int count = 1000;
        float[] fa = new float[count], fb = new float[count];
        double[] da = new double[count], db = new double[count];
        decimal[] ma = new decimal[count], mb = new decimal[count];
        public TestRunner()
        {
            var rnd = new Random(9527);
            for (int i = 0; i < count; i++)
            {
                var a = rnd.Next(1000) + 1;
                var b = rnd.Next(1000) + 1;
                fa[i] = a / 10f; fb[i] = b / 10f;
                da[i] = a / 10d; db[i] = b / 10d;
                ma[i] = a / 10m; mb[i] = b / 10m;
            }
            for (int i = 0; i < 10; i++)
                Console.WriteLine($"{fa[i],4}, {fb[i],4} | {da[i],4}, {db[i],4} | {ma[i],4}, {mb[i],4}");
        }

        [Benchmark]
        public void CalcAddWithFloat()
        {
            for (var i = 0; i < count; i++) { var a = fa[i] + fb[i]; }
        }
        [Benchmark]
        public void CalcSubWithFloat()
        {
            for (var i = 0; i < count; i++) { var a = fa[i] - fb[i]; }
        }
        [Benchmark]
        public void CalcMultWithFloat()
        {
            for (var i = 0; i < count; i++) { var a = fa[i] * fb[i]; }
        }
        [Benchmark]
        public void CalcDivWithFloat()
        {
            for (var i = 0; i < count; i++) { var a = fa[i] / fb[i]; }
        }

        [Benchmark]
        public void CalcAddWithDouble()
        {
            for (var i = 0; i < count; i++) { var a = da[i] + db[i]; }
        }
        [Benchmark]
        public void CalcSubWithDouble()
        {
            for (var i = 0; i < count; i++) { var a = da[i] - db[i]; }
        }
        [Benchmark]
        public void CalcMultWithDouble()
        {
            for (var i = 0; i < count; i++) { var a = da[i] * db[i]; }
        }
        [Benchmark]
        public void CalcDivWithDouble()
        {
            for (var i = 0; i < count; i++) { var a = da[i] / db[i]; }
        }

        [Benchmark]
        public void CalcAddWithDecimal()
        {
            for (var i = 0; i < count; i++) { var a = ma[i] + mb[i]; }
        }
        [Benchmark]
        public void CalcSubWithDecimal()
        {
            for (var i = 0; i < count; i++) { var a = ma[i] - mb[i]; }
        }
        [Benchmark]
        public void CalcMultWithDecimal()
        {
            for (var i = 0; i < count; i++) { var a = ma[i] * mb[i]; }
        }
        [Benchmark]
        public void CalcDivWithDecimal()
        {
            for (var i = 0; i < count; i++) { var a = ma[i] / mb[i]; }
        }
    }
}