Float vs. Double — What's the Difference?
By Tayyaba Rehman — Updated on September 22, 2023
Float and Double are data types; Float typically uses 32 bits, while Double uses 64 bits, allowing more precision.
Difference Between Float and Double
Table of Contents
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Key Differences
Float and Double, in the realm of computing, refer to two different precision levels for representing real numbers. The Float data type, consuming 32 bits of memory, offers single precision. In contrast, Double, taking up 64 bits, provides double precision. This distinction between Float and Double translates into the accuracy and range of numbers they can represent.
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Both Float and Double play pivotal roles in computational scenarios. Selecting between Float and Double boils down to the specific requirements of the task at hand. If memory efficiency is paramount and the computations are relatively simple, Float might be a good choice. Conversely, for intricate calculations or those that necessitate high precision, Double would be the preferred data type.
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To illustrate, imagine creating a program to handle basic financial transactions for a small shop; Float could suffice. However, for advanced scientific computations, where even a minute error can lead to significant discrepancies, Double becomes indispensable.
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When working with numbers that don't require a vast precision range, Float serves the purpose. On the other hand, Double, with its enhanced capacity and precision, is apt for calculations demanding more accuracy. Using Float can lead to less memory consumption, whereas Double might be more resource-intensive but offers finer detail.
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Comparison Chart
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Definitions
Float
A 32-bit data type for representing real numbers.
In his code, he used Float for basic mathematical operations.
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Double
A 64-bit data type for real numbers.
Her scientific software predominantly relied on Double.
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Float
Handles a smaller range of numbers.
He noticed Float was limiting for vast numerical ranges.
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Double
Consisting of two equal, identical, or similar parts or things
Double doors
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Float
To remain suspended within or on the surface of a fluid without sinking.
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Float
To be suspended in or move through space as if supported by a liquid.
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Double
At or to twice the amount or extent
You have to be careful, and this counts double for older people
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Double
A thing which is twice as large as usual or is made up of two standard units or things
Join the two sleeping bags together to make a double
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Float
To move easily or lightly
"Miss Golightly ... floated round in their arms light as a scarf" (Truman Capote).
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Double
A person who looks exactly like another
You could pass yourself off as his double
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Float
(Economics) To rise or fall freely in response to the market
Allowed the dollar to float.
A loan whose interest rate floats with the prime rate.
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Double
(especially in tennis and badminton) a game or competition involving sides made up of two players
The semi-finals of the doubles
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Double
A system of change-ringing using five bells, with two pairs changing places each time.
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Double
A pair of victories in the same sport in two different competitions
Manchester United won the double twice
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Double
A number or amount which is twice as large as a contrasting or usual number or amount
He paid double and had a room all to himself
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Float
(Economics) To allow (the exchange value of a currency, for example) to rise or fall freely in response to the market
Inflation forced the government to float the currency.
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Double
Fold or bend (paper, cloth, or other material) over on itself
The muslin is doubled and then laid in a sieve over the bowl
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Double
Be used in or play another, different role
A laser printer doubles as a photocopier
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Double
Composed of two unlike parts; dual
A double meaning.
A double role for an actor.
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Float
(Computers) To convert (data) from fixed-point notation to floating-point notation.
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Double
(Botany) Having many more than the usual number of petals, usually in a crowded or an overlapping arrangement
A double chrysanthemum.
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Float
A buoyant object, such as a piece of cork or a plastic ball, used to hold a net or part of a fishing line afloat.
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Float
A floating ball attached to a lever to regulate the water level in a tank.
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Double
Something capable of carrying, moving, or holding two people or things, as a mattress.
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Float
(Biology) An air-filled sac or structure that aids in the flotation of an aquatic organism. Also called air bladder, air vesicle.
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Float
A decorated exhibit or scene mounted on a mobile platform and pulled or driven in a parade.
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Double
An actor who takes the place of another actor in scenes requiring special skills or preparations
A stunt double.
A body double.
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Float
The number of shares of a security that are publicly owned and traded.
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Float
The time between the issuing or depositing of a check and the debiting of the issuer's account.
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Float
The time during which a credit card purchase can be repaid without interest.
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Double
Doubles(Sports) A form of a game, such as tennis or handball, having two players on each side.
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Double
(Baseball) A hit enabling the batter to reach second base. Also called two-bagger, two-base hit.
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Double
A bid in bridge indicating strength to one's partner; a request for a bid.
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Double
A bid doubling one's opponent's bid in bridge, thus increasing the penalty for failure to fulfill the contract.
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Float
To be supported by a fluid of greater density (than the object).
Helium balloons float in air, while air-filled balloons don't.
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Float
To be supported by a liquid of greater density, such that part (of the object or substance) remains above the surface.
The boat floated on the water.
The oil floated on the vinegar.
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Float
(transitive) To cause something to be suspended in a liquid of greater density.
To float a boat
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Float
(intransitive) To be capable of floating.
That boat doesn't float.
Oil floats on vinegar.
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Float
(intransitive) To move in a particular direction with the liquid in which one is floating.
I’d love to just float downstream.
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Float
(intransitive) To drift or wander aimlessly.
I’m not sure where they went... they're floating around here somewhere.
Images from my childhood floated through my mind.
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Float
(intransitive) To drift gently through the air.
The balloon floated off into the distance.
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Float
(intransitive) To move in a fluid manner.
The dancer floated gracefully around the stage.
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Float
To circulate.
There's a rumour floating around the office that Jan is pregnant.
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Float
(aviation) To remain airborne, without touching down, for an excessive length of time during landing, due to excessive airspeed during the landing flare.
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Float
(of an idea or scheme) To be viable.
That's a daft idea... it'll never float.
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Double
(Music) To duplicate (another part or voice) an octave higher or lower or in unison.
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Float
(transitive) To propose (an idea) for consideration.
I floated the idea of free ice-cream on Fridays, but no one was interested.
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Float
(intransitive) To automatically adjust a parameter as related parameters change.
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Float
(of currencies) To have an exchange value determined by the markets, as opposed to by central fiat.
The yen floats against the dollar.
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Double
To turn sharply or all the way around; reverse one's course
Had to double back to touch the missed base.
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Float
To allow (the exchange value of a currency) to be determined by the markets.
The government floated the pound in January.
Increased pressure on Thailand’s currency, the baht, in 1997 led to a crisis that forced the government to float the currency.
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Double
To serve in an additional capacity
A frying pan that doubles as a pie tin.
A conductor who doubles as a pianist.
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Float
To issue or sell shares in a company (or units in a trust) to members of the public, followed by listing on a stock exchange.
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Float
(transitive) To spread plaster over (a surface), using the tool called a float.
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Float
(transitive) To use a float (rasp-like tool) upon.
It is time to float this horse's teeth.
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Double
To twice the amount or extent; doubly
Paid double for the customized car.
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Float
To cause (an element within a document) to float above or beside others.
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Double
Made up of two matching or complementary elements.
The closet has double doors.
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Float
A buoyant device used to support something in water or another liquid.
Attach the float and the weight to the fishing line, above the hook.
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Float
A mass of timber or boards fastened together, and conveyed down a stream by the current; a raft.
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Double
Of a family relationship, related on both the maternal and paternal sides of a family.
He's my double cousin as my mother's sister married my father's brother.
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Float
A sort of trowel used for finishing concrete surfaces or smoothing plaster.
When pouring a new driveway, you can use a two-by-four as a float.
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Float
An elaborately decorated trailer or vehicle, intended for display in a parade or pageant.
That float covered in roses is very pretty.
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Float
(British) A small vehicle used for local deliveries, especially in the term milk float.
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Float
(finance) Funds committed to be paid but not yet paid.
Our bank does a nightly sweep of accounts, to adjust the float so we stay within our reserves limit.
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Float
An offering of shares in a company (or units in a trust) to members of the public, normally followed by a listing on a stock exchange.
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Float
(banking) The total amount of checks/cheques or other drafts written against a bank account but not yet cleared and charged against the account.
No sir, your current float is not taken into account, when assets are legally garnished.
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Float
(insurance) Premiums taken in but not yet paid out.
We make a lot of interest from our nightly float.
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Double
Two together; two at a time. (especially in see double)
There are only a few beds, so some of the children will have to sleep double for the night.
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Float
(programming) A floating-point number, especially one that has lower precision than a double.
That routine should not have used an int; it should be a float.
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Float
A soft beverage with a scoop of ice-cream floating in it.
I don't consider anything other than root-beer with vanilla ice-cream to be a "real" float.
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Double
A person who resembles and stands in for another person, often for safety purposes
Saddam Hussein was rumored to have many doubles.
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Float
A small sum of money put in a cashier's till, or otherwise secured, at the start of business, to enable change to be made.
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Double
A drink with two portions of alcohol.
On second thought, make that a double.
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Float
(poker) A maneuver where a player calls on the flop or turn with a weak hand, with the intention of bluffing after a subsequent community card.
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Float
(automotive) A car carrier or car transporter truck or truck-and-trailer combination.
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Double
A redundant item for which an identical item already exists.
I have more than 200 stamps in my collection but they're not all unique: some are doubles.
Before printing the photos, Liam deleted the doubles.
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Double
(baseball) A two-base hit.
The catcher hit a double to lead off the ninth.
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Double
(bridge) A call that increases certain scoring points if the last preceding bid becomes the contract.
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Double
(billiards) A strike in which the object ball is struck so as to make it rebound against the cushion to an opposite pocket.
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Double
A bet on two horses in different races in which any winnings from the first race are placed on the horse in the later race.
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Float
A breakdancing move in which the body is held parallel to the floor while balancing on one or both hands.
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Float
(computing) A visual style on a web page that causes the styled elements to float above or beside others.
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Float
(biology) The gas-filled sac, bag, or body of a siphonophore; a pneumatophore.
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Double
(dominoes) A tile that has the same value (i.e., the same number of pips) on both sides.
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Float
Any object (element) whose location in composition (page makeup, pagination) does not flow within body text but rather floats outside of it, usually anchored loosely (in buoy metaphor) to spots within it (citations, callouts): a figure (image), table, box, pull quote, ornament, or other float element.
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Double
A double-precision floating-point number.
The sine function returns a double.
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Float
Anything which floats or rests on the surface of a fluid, as to sustain weight, or to indicate the height of the liquid surface, or mark the place of, something.
This reform bill . . . had been used as a float by the conservative ministry.
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Double
(soccer) Two competitions, usually one league and one cup, won by the same team in a single season.
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Float
A contrivance for affording a copious stream of water to the heated surface of an object of large bulk, as an anvil or die.
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Double
The feat of winning two events in a single meet or competition.
In 1996, Michael Johnson achieved a double by winning both the 200 and 400 meter dashes.
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Float
The trowel or tool with which the floated coat of plastering is leveled and smoothed.
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Float
A single-cut file for smoothing; a tool used by shoemakers for rasping off pegs inside a shoe.
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Float
The free use of money for a time between occurrence of a transaction (such as depositing a check or a purchase made using a credit card), and the time when funds are withdrawn to cover the transaction; also, the money made available between transactions in that manner.
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Double
(transitive) To multiply by two.
The company doubled their earnings per share over last quarter.
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Float
A vehicle on which an exhibit or display is mounted, driven or pulled as part of a parade. The float often is based on a large flat platform, and may contain a very elaborate structure with a tableau or people.
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Double
(intransitive) To increase by 100%, to become twice as large in size.
Our earnings have doubled in the last year.
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Float
To rest on the surface of any fluid; to swim; to be buoyed up.
The ark no more now floats, but seems on ground.
Three blustering nights, borne by the southern blast,I floated.
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Double
To be the double of; to exceed by twofold; to contain or be worth twice as much as.
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Float
To move quietly or gently on the water, as a raft; to drift along; to move or glide without effort or impulse on the surface of a fluid, or through the air.
They stretch their broad plumes and float upon the wind.
There seems a floating whisper on the hills.
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Double
(transitive) To fold over so as to make two folds.
To make a pleat, double the material at the waist.
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Float
To cause to float; to cause to rest or move on the surface of a fluid; as, the tide floated the ship into the harbor.
Had floated that bell on the Inchcape rock.
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Float
To flood; to overflow; to cover with water.
Proud Pactolus floats the fruitful lands.
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Double
(baseball) To get a two-base hit.
The batter doubled into the corner.
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Float
To pass over and level the surface of with a float while the plastering is kept wet.
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Float
To support and sustain the credit of, as a commercial scheme or a joint-stock company, so as to enable it to go into, or continue in, operation.
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Float
The time interval between the deposit of a check in a bank and its payment
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Double
To serve a second role or have a second purpose.
A spork is a kind of fork that doubles as a spoon.
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Float
The number of shares outstanding and available for trading by the public
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Double
To act as substitute for (another theatrical performer in a certain role, etc).
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Double
(theatre) To play (both one part and another, in the same play, etc).
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Float
An elaborate display mounted on a platform carried by a truck (or pulled by a truck) in a procession or parade
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Float
A hand tool with a flat face used for smoothing and finishing the surface of plaster or cement or stucco
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Double
(music) To duplicate (a part) either in unison or at the octave above or below it.
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Float
Be in motion due to some air or water current;
The leaves were blowing in the wind
The boat drifted on the lake
The sailboat was adrift on the open sea
The shipwrecked boat drifted away from the shore
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Double
(bridge) To make a call that will double certain scoring points if the preceding bid becomes the contract.
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Float
Set afloat;
He floated the logs down the river
The boy floated his toy boat on the pond
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Float
Circulate or discuss tentatively; test the waters with;
The Republicans are floating the idea of a tax reform
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Double
To cause (a ball) to rebound from a cushion before entering the pocket.
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Double
(transitive) To multiply the strength or effect of by two.
Sorry, this store does not double coupons.
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Double
(military) To unite, as ranks or files, so as to form one from each two.
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Float
Allow (currencies) to fluctuate;
The government floated the ruble for a few months
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Double
To transmit simultaneously on the same channel as another station, either unintentionally or deliberately, causing interference.
Could you please repeat your last transmission? Another station was doubling with you.
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Float
Convert from a fixed point notation to a floating point notation;
Float data
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Float
Offers single precision.
With Float, he could achieve reasonable accuracy for his application.
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Double
Twofold; multiplied by two; increased by its equivalent; made twice as large or as much, etc.
Let a double portion of thy spirit be upon me.
Darkness and tempest make a double night.
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Float
Suitable for basic calculations.
For the small shop's software, Float was a perfect choice.
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Double
Being in pairs; presenting two of a kind, or two in a set together; coupled.
[Let] The swan, on still St. Mary's lake,Float double, swan and shadow.
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Float
Consumes less memory than Double.
To save on memory resources, she opted for Float.
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Double
Divided into two; acting two parts, one openly and the other secretly; equivocal; deceitful; insincere.
With a double heart do they speak.
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Double
Having the petals in a flower considerably increased beyond the natural number, usually as the result of cultivation and the expense of the stamens, or stamens and pistils. The white water lily and some other plants have their blossoms naturally double.
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Double
To increase by adding an equal number, quantity, length, value, or the like; multiply by two; as, to double a sum of money; to double a number, or length.
Double six thousand, and then treble that.
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Double
To make of two thicknesses or folds by turning or bending together in the middle; to fold one part upon another part of; as, to double the leaf of a book, and the like; to clinch, as the fist; - often followed by up; as, to double up a sheet of paper or cloth.
Then the old manWas wroth, and doubled up his hands.
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Double
To be the double of; to exceed by twofold; to contain or be worth twice as much as.
Thus reënforced, against the adverse fleet,Still doubling ours, brave Rupert leads the way.
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Double
To pass around or by; to march or sail round, so as to reverse the direction of motion.
Sailing along the coast, the doubled the promontory of Carthage.
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Double
To be increased to twice the sum, number, quantity, length, or value; to increase or grow to twice as much.
'T is observed in particular nations, that within the space of three hundred years, notwithstanding all casualties, the number of men doubles.
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Double
To return upon one's track; to turn and go back over the same ground, or in an opposite direction.
Doubling and turning like a hunted hare.
Doubling and doubling with laborious walk.
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Double
To play tricks; to use sleights; to play false.
What penalty and danger you accrue,If you be found to double.
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Double
To set up a word or words a second time by mistake; to make a doublet.
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Double
Twice as much; twice the number, sum, quantity, length, value, and the like.
If the thief be found, let him pay double.
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Double
Among compositors, a doublet (see Doublet, 2.); among pressmen, a sheet that is twice pulled, and blurred.
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Double
That which is doubled over or together; a doubling; a plait; a fold.
Rolled up in sevenfold doubleOf plagues.
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Double
A turn or circuit in running to escape pursues; hence, a trick; a shift; an artifice.
These men are too well acquainted with the chase to be flung off by any false steps or doubles.
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Double
A person or thing that is the counterpart of another; a duplicate; copy; (Obs.) transcript; - now chiefly used of persons. Hence, a wraith.
My charming friend . . . has, I am almost sure, a double, who preaches his afternoon sermons for him.
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Double
A player or singer who prepares to take the part of another player in his absence; a substitute; - used especially of a person who resembles an actor and takes the actor's place in scenes requiring special skills; as, a stunt double.
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Double
A feast in which the antiphon is doubled, hat is, said twice, before and after the Psalms, instead of only half being said, as in simple feasts.
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Double
A base hit on which the batter stops safely at second base;
He hit a double to deep centerfield
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Double
A stand-in for movie stars to perform dangerous stunts;
His first job in Hollywood was as a double for Clark Gable
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Double
Someone who closely resembles a famous person (especially an actor);
He could be Gingrich's double
She's the very image of her mother
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Double
Raising the stakes in a card game by a factor of 2;
I decided his double was a bluff
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Double
Bend over or curl up, usually with laughter or pain;
He doubled and vomited violently
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Double
Do double duty; serve two purposes or have two functions;
She doubles as his wife and secretary
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Double
Make or do or perform again;
He could never replicate his brilliant performance of the magic trick
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Double
Having more than one decidedly dissimilar aspects or qualities;
A double (or dual) role for an actor
The office of a clergyman is twofold; public preaching and private influence
Every episode has its double and treble meaning
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Double
Consisting of or involving two parts or components usually in pairs;
An egg with a double yolk
A double (binary) star
Double doors
Dual controls for pilot and copilot
Duple (or double) time consists of two (or a multiple of two) beats to a measure
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Double
Twice as great or many;
Ate a double portion
The dose is doubled
A twofold increase
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Double
Used of flowers having more than the usual number of petals in crowded or overlapping arrangements;
Double chrysanthemums have many rows of petals and are usually spherical or hemispherical
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Jan 30, 2022
Double
Having two meanings with intent to deceive;
A sly double meaning
Spoke with forked tongue
Tayyaba Rehman
Jan 30, 2022
Double
To double the degree;
She was doubly rewarded
His eyes were double bright
Tayyaba Rehman
Jan 30, 2022
Double
Provides double precision.
For enhanced accuracy, he chose the Double data type.
Tayyaba Rehman
Sep 22, 2023
Double
Ideal for intricate calculations.
For astronomical computations, Double was indispensable.
Tayyaba Rehman
Sep 22, 2023
Double
Occupies more memory than Float.
Though more resource-intensive, she preferred Double for precision.
Tayyaba Rehman
Sep 22, 2023
Double
Manages a broader range of numbers.
She found Double more versatile for diverse numerical datasets.
Tayyaba Rehman
Sep 22, 2023
FAQs
Can I use Float for scientific computations?
While possible, Double is often preferred for scientific computations due to its higher precision.
Tayyaba Rehman
Sep 22, 2023
What is the primary distinction between Float and Double?
Float offers single precision using 32 bits, while Double provides double precision using 64 bits.
Tayyaba Rehman
Sep 22, 2023
Is Double more accurate than Float?
Yes, Double offers greater accuracy due to its double precision.
Tayyaba Rehman
Sep 22, 2023
Are Float and Double used only in specific programming languages?
No, Float and Double are standard data types found in many programming languages.
Tayyaba Rehman
Sep 22, 2023
Why would I choose Float over Double if Double is more precise?
Float can be chosen for memory efficiency or when the task doesn't demand high precision.
Tayyaba Rehman
Sep 22, 2023
Which uses more memory, Float or Double?
Double uses more memory than Float, consuming 64 bits compared to Float's 32 bits.
Tayyaba Rehman
Sep 22, 2023
When should I use Float?
Use Float for simpler calculations where high precision is not critical and memory efficiency is desired.
Tayyaba Rehman
Sep 22, 2023
Can I interchangeably use Float and Double in my code?
While technically possible, it's essential to consider the precision and memory requirements of your application.
Tayyaba Rehman
Sep 22, 2023
In terms of performance, which is faster: Float or Double?
The performance varies based on the platform and context, but Float operations might be faster due to lesser memory usage.
Tayyaba Rehman
Sep 22, 2023
Which has a larger range: Float or Double?
Double can represent a larger range of numbers than Float due to its increased bit size.
Tayyaba Rehman
Sep 22, 2023
Author Spotlight
Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
