maat/Maat.Core/DateExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Maat.Core
{
    /// <summary>
    /// Metodo estensione datetime:
    /// 
    /// Example usage:
    /// DateTime now = DateTime.Now;
    /// DateTime nearest5Minutes = now.Round(TimeSpan.FromMinutes(5));
    /// DateTime floor5Minutes = now.Floor(TimeSpan.FromMinutes(5));
    /// DateTime ceil5Minutes = now.Ceil(TimeSpan.FromMinutes(5));
    /// </summary>
    public static class DateExtensions
    {
        public static DateTime Round(this DateTime date, TimeSpan span)
        {
            long ticks = (date.Ticks + (span.Ticks / 2) + 1) / span.Ticks;
            return new DateTime(ticks * span.Ticks);
        }

        public static DateTime Floor(this DateTime date, TimeSpan span)
        {
            long ticks = date.Ticks / span.Ticks;
            return new DateTime(ticks * span.Ticks);
        }

        public static DateTime Ceil(this DateTime date, TimeSpan span)
        {
            long ticks = (date.Ticks + span.Ticks - 1) / span.Ticks;
            return new DateTime(ticks * span.Ticks);
        }
    }

    

}