Floor Vs Round

Significance is the multiple to which you want to round.

Floor vs round. In mathematics and computer science the floor function is the function that takes as input a real number and gives as output the greatest integer less than or equal to denoted or similarly the ceiling function maps to the least integer greater than or equal to denoted or. Floor will simply drop decimal value and return only integer. But while round returns the same scale where possible as the data type passed in the data type floor returns has a 0 scale where possible. For eg floor 2 88888 001 2 888 this function will not give the round of values only provide same digits rounddown this function is also to give the number fo digits after the decimal without any change in the value.

It will return 23 75. Meanwhile round will round number that has decimal value lower than 0 5 to lower int and when more than 0 5 to higher int. So round 1 2 1 but round 1 9 2. For example if you want to avoid using pennies in your prices and your product is priced at 23 78 use the formula floor 23 78 0 05 to round prices up to the nearest nickel.

Floor the floor function functionality is to just give the number of digits which we had give after the decimal. It is a common situation that you want less accuracy than php gives you in which case you need to use one of php s selection of rounding functions. As a point there is another difference between the functions in that in relation to a numberline floor will typically round down accurately to the left and ceiling will round up to the right. Floor works like the mround function but floor always rounds down.

Also round has more options like precision and rounding options. Oddly round x 0 1 returns almost the same value as floor. Rounddown 2 5 2 floor 2 5 2 rounddown 2 5 2. When you feed math round a 500000 value it will round to the nearest even integer if i recall correctly.

For example and while. Floor number significance number is the value you want to round. Floor returns the integer value less than or equal to the value passed in. Math floor just rounds down to the nearest integerer while math round searches for the nearest integer.

Ceil floor and round. Rounddown however will round towards zero and roundup will round away from zero. So floor 1 2 1 and floor 1 9 1. Floor will always round down.

To round down and return an integer only use the int function. If a number is already an exact multiple of significance no rounding occurs. To truncate decimal places use the trunc function. Both ceil and floor take just one parameter the number to round ceil takes the number and rounds it to the nearest integer above its current value whereas floor rounds it to the nearest integer below its.