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   float

   /fləʊt/

   verb

   • 1. rest or move on or near the surface of a liquid without sinking: "she relaxed, floating gently in the water" Similar stay afloatstay on the surfacebe buoyantbe buoyed upOpposite sink
   • ▪ cause (a buoyant object) to rest or move on or near the surface of a liquid: "trees were felled and floated downstream"
   • ▪ be suspended freely in a liquid or gas: "fragments of chipped cartilage floated in the joint"
   • 2. move or hover slowly and lightly in a liquid or the air; drift: "clouds floated across a brilliant blue sky" Similar hoverlevitatebe suspendedhangdefy gravitydriftglidesailslipslidewaftflowstreammovetravelbe carriedOpposite rush
   • ▪ (of a rumour, idea, etc.) circulate: "the notion was floating around Capitol Hill"
   • ▪ move in a casual or leisurely way: "Araminta floated down the stairs"
   • ▪ (in sport) make (the ball) travel lightly and effortlessly through the air: "he floated the kick into the net"
   • 3. put forward (an idea) as a suggestion or test of reactions. Similar suggestput forwardcome up withsubmitraisemootproposeadvanceofferprofferpositpresenttabletest the popularity oftableinformal:run something up the flagpole (to see who salutes)Opposite withdraw
   • ▪ offer the shares of (a company) for sale on the stock market for the first time. Similar launchget goingget off the groundoffersellintroduceestablishset upinstitutepromoteOpposite wind upbuy back
   • 4. (of a currency) fluctuate freely in value in accordance with supply and demand in the financial markets: "a policy of letting the pound float"
   • ▪ allow (a currency) to float.

   noun

   • 1. a thing that is buoyant in water.
   • ▪ a small object attached to a fishing line to indicate by moving when a fish bites.
   • ▪ a cork or buoy supporting the edge of a fishing net.
   • ▪ a light object held for support by a person learning to swim.
   • ▪ a hollow or inflated organ enabling an organism (such as the Portuguese man-of-war) to float in the water.
   • ▪ a hollow structure fixed underneath an aircraft enabling it to take off and land on water.
   • ▪ a floating device on the surface of a liquid which forms part of a valve apparatus controlling flow in and out of the enclosing container, e.g. in a water cistern or a carburettor.
   • 2. a small vehicle or cart, especially one powered by electricity. British
   • ▪ a platform mounted on a truck and carrying a display in a procession: "a carnival float"
   • 3. a sum of money used for change at the beginning of a period of trading in a shop or stall etc., or for minor expenditures. British
   • 4. a hand tool with a rectangular blade used for smoothing plaster.
   • 5. a soft drink with a scoop of ice cream floating in it: North American "ice-cream floats"
   • 6. (in critical path analysis) the period of time by which the duration of an activity may be extended without affecting the overall time for the process.

   Word Origin Old Englishflotian (verb), of Germanic origin and related to fleet4, reinforced in Middle English by Old French floter, also from Germanic.

   Scrabble Points: 8

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2. forum.arduino.cc › t › define-a-floatdefine a float - Programming Questions - Arduino Forum

   forum.arduino.cc › t › define-a-float

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   Jan 28, 2018 · Hello, I am all new to Arduino and C++ and trying to learn/understand it. It was 25+ years ago I did some programming in a non high level scripting language. Only playing with Python for the last 10 years. So I have been reading up on the difference between #define and const on the forum. For exampel these two questions: The difference between #define and const #define versus const and other ...

3. forum.arduino.cc › t › a-basic-question-about-float-and-doubleA basic question about "float" and "double" - Arduino Forum

   forum.arduino.cc › t › a-basic-question-about-float-and-double

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   Mar 17, 2019 · Hi friends! Maybe the next question is very basic, but I don't understand deeply the meaning of variable "float". If you search the definition of variable float in webpage of Arduino: float - Arduino Reference you can see the next: "(..) Floating point numbers are not exact, and may yield strange results when compared. For example 6.0 / 3.0 may not equal 2.0. You should instead check that the ...

4. forum.arduino.cc › t › define-a-floatdefine a float - Page 2 - Programming Questions - Arduino Forum

   forum.arduino.cc › t › define-a-float

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   Jan 28, 2018 · What would be the difference between this solution and the ones suggested in #4 and #6. #define R1 984000. #define R2 472000. const float batFact = ( (1.1/1023)* ( ( (float)R1+R2)/R2)); just a few: TYPING: a hell of a lot easier because of all the typing machinations you need to sort using macros, as you learnt.

5. forum.arduino.cc › t › using-define-for-math-functionUsing #define for math function - Arduino Forum

   forum.arduino.cc › t › using-define-for-math-function

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   Mar 5, 2014 · #define rise 32450 #define run 400 #define slope (rise/run) That is the same as: #define slope(32450/400) The compiler replaces the text and after that the compiler starts compiling the source code. If you want to make the compiler use float, use 32450.0 and 400.0

6. forum.arduino.cc › t › nrf24l01-sending-float-valuesnRF24L01 sending float values - Arduino Forum

   forum.arduino.cc › t › nrf24l01-sending-float-values

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   Jan 21, 2024 · UKHeliBob January 21, 2024, 10:22pm 2. ggregg: Can I send float structure via nRF24L01 module? Yes you can as long as the total number of bytes does not exceed 32. Which Arduino board are you using ? Please post both sketches, using code tags when you do. ggregg January 21, 2024, 11:20pm 3.

7. forum.arduino.cc › t › when-to-use-const-int-int-or-defineWhen to use const int, int, or #define - Arduino Forum

   forum.arduino.cc › t › when-to-use-const-int-int-or-define

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   Jul 30, 2020 · Avoid using #define (a text-based symbol substitution) until you understand the problems that can arise when using it. I use const int to define an integer variable that is not allowed to change. It can catch some types of programming errors or typos. The maximum positive value of an "int" depends on the compiler.

8. forum.arduino.cc › t › solved-float-byte-order-endianess[SOLVED] float, byte-order, endianess - Arduino Forum

   forum.arduino.cc › t › solved-float-byte-order-endianess

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   Nov 17, 2013 · Dear All, I need to transmit floats through an RS-485 connection. I have to send the float in the IEEE754 format as four bytes: byte 1: SEEEEEEE byte 2: EMMMMMMM byte 3: MMMMMMMM byte 4: MMMMMMMM With: S = sign bit E = exponant bits M = Mantissa bits The code is expected to run on ATmega32u4 (Leonardo), ATmega328 (Uno), ATmega328P (Duemilanove), Atmel SAM3X8E ARM Cortex-M3 (Due ...

9. forum.arduino.cc › t › how-to-display-float-value-on-led-dotmatrix-display-mdHow to display float value on LED dotmatrix display (MD Parola)

   forum.arduino.cc › t › how-to-display-float-value-on-led-dotmatrix-display-md

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   Aug 22, 2023 · The following sketch is tested on UNO, and it converts a float number into ASCII and displays onto MAX7219 driven 4-8x8 LED Matrix Display Unit. You may find it useful. (The floatToASCII() function is taken from net.) The sprintf() function would be easier, but it does not work on UNO for float number.

10. forum.arduino.cc › t › const-int-intconst int / int - Programming Questions - Arduino Forum

    forum.arduino.cc › t › const-int-int

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    Jul 22, 2012 · use float pi; use const float pi; use #define pi; use at runtime. copy it to one variable; copy it to two variable; and a time measuring for 1.000.000 loop cycles ( using a leonardo and IDE 157 ) and found there is no difference in using internal PI, const float PI or #define PI but float pi is definitely bigger in RAM, ROM, cycle time.

11. www.zhihu.com › question › 423266431请问#define PI 3.1416比float pi=3.1416有什么优势呢？ - 知乎

    www.zhihu.com › question › 423266431

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    Sep 28, 2020 · 优势就是前者可以兼容double跟float，甚至字符串，而且是编译期转换。 后者用float损失了精度。而且用到不同类型比如字符串时需要运行期转换。 浮点如果直接定义为const有类型常量通常需要定义两份，一份float一份double。而使用define这样的无类型常量定义就只 ...