A few extension methods for rounding

Extensions.cs

		public static class Extensions{
			
			/**
		       * Rounds the supplied number to the nearest multiple of the parameter
		       * @param this int The number to round
		       * @param int The multiple to use
		       * @return int
		       * @static
		       * @extension
		       */
			public static int MultipleRound(this int number,int multiple){
				int rem = number % multiple;
				if(rem == 0){
					return number;
				}else{
					while(rem!=0){
						rem=number%multiple;
						if(rem>(multiple/2)){
							number+=rem;
						}else{
							number-=rem;
						}
					}
					return number;
				}
			}
			
			/**
		       * Rounds the supplied number to the nearest multiple of the parameter
		       * @param this float The number to round
		       * @param float The multiple to use
		       * @return int
		       * @static
		       * @extension
		       */
			public static int MultipleRound(this float number,float multiple){
				float rem = number % multiple;
				
				if(rem == 0){
					return (int)number;
				}else{
					while(rem!=0){
						rem=(int)number%multiple;
						if(rem>(multiple/2)){
							number+=rem;
						}else{
							number-=rem;
						}
					}
					return (int)number;
				}
			}
		}