processing float to int

Initially thought it was a int casting bug in Processing.js. Although the documentation states: "Processing.js always renders in smooth mode. round () Examples. While the problem you found is definitely real, the use case you found it in is one that highlights the danger of working with floating point numbers (http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html is a fantastic read on this subject, as an aside), and I don't think it would be worth adding checks in Processing.js to make sure it got the math "wrong" because of a Processing decimal data type precision restriction, when it's actually getting the math right. I'm coding my 3rd game and I have one question : - How to save and load int ? Some difference for float between Java Processing and Processing.js. Processing is a flexible software sketchbook and a language for learning how to code within the context of the visual arts. Powered by Discourse, best viewed with JavaScript enabled, Factorial not working "cannot convert from float to int". Hmm, one way to effect it is to exploit the fact that Pjs uses https://github.com/processing-js/processing-js/blob/master/src/Processing.js#L8111 so you could force the internal drawCrisp to false by doing a translate(0.01,0.01) or something to make Pjs see that there's an active transform so it shouldn't try to align to the pixel grid, without the transform having a true effect on the rasterization. If the way that Processingjs works for float is accepted, then the reference for float incorrectly states: "Floating-point numbers can be as large as 3.40282347E+38 and as low as -3.40282347E+38." The result is 998 in Processing.js. Although lines look crisp when they are not smooth, I think I'm looking for a way to turn off that shifting. So I’m sorry if my question is stupid and it bothers you. 1 Solution. If you use double instead of float in Processing, you'll get the correct result. I’m only less than a week old to Java, so I might be missing something obvious, however I couldn’t find anything on Integer to Float errors for Java on google. If you use only the int(), you will get integer value without a round figure.To convert float to int with the round figure, read this tutorial to … I wrote the following code and had error message “cannot convert from float to int”. If you see any errors or have suggestions, please let us know.If you prefer a more technical reference, visit the Processing Javadoc. correction - this is apparently a consequence of float being an idiotic data type - it's horrendously imprecise, and will yield 997 because 4.99 is actually not 4.99 but more like 4.9899999999999999999. Calculates the integer closest to the n parameter. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology. ... Converts an int or String to its floating point representation. The default Processing character set. "Floating-point numbers are not 100% accurate" would be most precisely described along the line of "Not all numbers can be represented by floating-point numbers" (a number literal is converted into a floating-point number which is very close, and sometimes identical to the number). As type I advice to use long on a 8 bitter as int (-32,768 to 32,767) is very likely to get out of range. This is a limitation of the HTML5 Canvas element." I am considering using a C++ compiler instead of the Arduino IDE because it alows using 64 bit double floats and 64 bit long long int. float x = 55.6; int a; void setup(){ } void draw(){ background(0); fill(255); x = round(x); a = (int)x; a = 100 * a / 60; rect(0,0,a,50); Follow-up on my notes on code speedup.We measure the computation cost of arithmetic operations on different data types and different (Intel64) CPUs. http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html, http://processing.org/reference/float.html, https://github.com/processing-js/processing-js/blob/master/src/Processing.js#L8111. More background behind the dirty details of float It is pretty obvious that float supports behind the comma values, but what are the disadvantage of float? Convert float64 to int pandas Code Explanation: Here the pandas library is initially imported and the imported library is used for creating a series. Some difference for float between Java Processing and Processing.js. float x = 9.2; int rx = round (x); // Sets 'rx' to 9 float y = 9.5; int ry = round (y); // Sets 'ry' to 10 float z = 9.9; int rz = round (z); // Sets 'rz' to 10. That means that signal values in the open interval (–1.0, 1.0) are all … \m/ And researching more of it, found out that str() converts the same data-types as int(). float var_x = 9.99; int var_y = static_cast(var_x); This method may look a bit more long winded, but it provides much better handling for situations such as accidentally requesting a 'static cast' on a type that cannot be converted. On the other, this situation is one where the data type used produces wrong results, and no matter what language this was, the result should have been 998 - as such, even with floats (especially with floats) functions like 200* shouldn't be int cast until the resulting number is a terminal in terms of a code path (e.g. Python Mode for Processing extends the Processing Development Environment with the Python programming language. (int) 4.0f will give you integer 4. If you want it to return an int value, then you'll have to rethink the logic inside your function so it's using int values instead. Can somebody explain how I can convert an 5 decimal float like: 51.96512 to an int like: 5196512 It is no problem to display 5196512 on the PCD8544, but I cant convert the 51.96512 to 5196512. Processing is an electronic sketchbook for developing ideas. Converts an int or String to its floating point representation. If you have a previous version, use the reference included with your software. The result is 998 in Processing.js. When casting from a float to an int, the value is truncated not rounded. This is an optional initialization. If you don't mind doing a quick experiment, try adding a pair of parentheses as follows: Yup, it means we can even convert boolean to int using int()!!! float x = 1.0000001 float y = 1.1000000001 float a = x + y round(a) a = 2.10 The standard round() in processing rounds to the nearest whole number, but I need to have the decimals in place. ISO 8859-1 Latin 1 is Unicode characters 0x80 -> 0xFF, and would seem a good standard, but in practice, most P5 users would rather have characters that they expect from their platform's fonts. Description. The duration of the processing float is driven by the payee's internal processes , staff training, and the existence of any work backlog. I still require some decimals. If the index is past the length of the list, it'll expand the list to accommodate, and fill the intermediate entries with 0s. We see that 64 bits integer is slow, 128 bits floating-point is terrible and 80 bits extended precision not better, division is always slower than other operations (integer and floating-point), and smaller is usually better. A lengthy processing float reduces the availability of funds for the payee. Syntax. If only one parameter is passed to the function, it will return a float between zero and the value of the high parameter. Reference for Processing version 1.5. Description: Generates random numbers. Processing float is the time period between when a payee receives a payment from the payer and deposits it. i have this function that work in oposite way, it converts Byte array to Float value: public float byteArrayToFloat(byte test[]) { int MASK = 0xff; int bits = 0; … This repository has been archived by the owner. Floating-point numbers can be as large as 3.40282347E+38 and as low as -3.40282347E+38. The max of the float that is used in Processingjs is actually 1.7976931348623158e+308 and the min is 2.2250738585072014e-308. Scenario. On the one hand, it sounds like it's worth filing a bug over on the Processing repository to request an update to the API, so that the double type isn't just "available" but properly supported. So both (int) 3.2 and (int) 3.7 are 3. For example, round (133.8) returns the value 134. I just figured it out! I tried storing the value as an int variable by casting it into an int first, but now the variable cannot be cast into a float still. float currx = (int)(200*xinc); The result is 997.0 in Processing. http://processing.org/reference/float.html Also related issue: processing/processing#571. 22 6 1 Matthew yes 14. head() You’ll find that df1 (Be aware that there is a proposal to add a native integer NA to Pandas in the future; as of this writing, it has not been included). we can convert very easily, For Converting floating point value, add 0.5 and convert to integer we can get correct answer, floating_point_value + 0.5 and Convert to int . A float can be converted to int simply by casting: float z = 5.123f; int a = (int) z; This will truncate the float. int Counter =0; float BasicSalary; You'll notice that the Counter variable is set to 0. If it's supposed to be a float value, then you can simply change the return type of the function to float. Hello there how to convert float val to byte array ? We simply can't use double for any 2D Primitives if we want the code to be cross-platform. If you don't initialize and then use them in code without having set an initial value, the variable will start with a … I’m trying to make a simple 2d application for the “Traveller Salesmanship Problem” i’m configuring the program, i was working on everything in int, but i thougth float would be more accurate, even since i’m working with distance between 2 points. It's a very good practice to initialize variables. Processing; ... use an int, and divide by a float value before using it. Even though both float and int are 32-bit wide data type, float has the higher range than integer primitive value. Amongst the 8 primitive data-types, only double isn't accepted. It is a context for learning fundamentals of computer programming within the context of the electronic arts. This is the union of the Mac Roman and Windows ANSI (CP1250) character sets. Maybe the issue is that the value in Processingjs is not a float so the end values are different? Although Processing 2.x may support double, most Processing 2.x methods, such as rect(float, float, float, float), are not applicable for the arguments (double, double, double, double). hmm, that's an interesting problem. The text was updated successfully, but these errors were encountered: Given that the only correct answer here is 998 (verify that by writing it out on paper =), it looks like you found a bug in Processing, not in Processing.js, (Based on the typing rules, xinc is float, 200 * xinc is float (because int * float is float), and as this is already an integer number, (int)(200 * xinc) should simply turn 998.0 into 998). int i = 65; float f = float (i); println (i + " : " + f); // Prints "65 : 65.0". Some difference for float between Java Processing and Processing.js. I tried storing the value as an int variable by casting it into an int first, but now the variable cannot be cast into a float still. 2,239 Views. in a print statement or a pixel grid location). For example, float xinc = 4.99; float currx = (int)(200*xinc); The result is 997.0 in Processing. Description. This obviously doesn't work, because the number becomes 5,100,000. While char() has the same restrictions as float()! I'm trying to save GPS coordinates to an EEPROM. Processing data file, change float to int in data arrays/rows. I’m trying to calculate float numbers then print out the result. Python Mode for Processing extends the Processing Development Environment with the Python programming language. However, conversion function int() is much more flexible! It is a context for learning fundamentals of computer programming within the context of the electronic arts. Processing; ... Data type for floating-point numbers, a number that has a decimal point. In this tutorial, learn how to convert float to integer type value in Python. I have tried to make the float an int bij simply multiplying it bij 100,000. The result is 998 in Processing.js. Even though both float and int are 32-bit wide data type, float has the higher range than integer primitive value. It is a context for learning fundamentals of computer programming within the context of the electronic arts. Java Convert float to String. I can't find a function that does what I'm looking for. We can convert float to String in java using String.valueOf() and Float.toString() methods.. float xinc = 4.99; Reference Home. My code as below: float … The result is still a floating point, so you will need the cast. If you want to increment a value in small intervals, use an int, and divide by a float value before using it. Since a float is a bigger than int, you can convert a float to an int by simply down-casting it e.g. Hello, I am a beginner and finding a problem. Last Modified: 2010-04-21. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology. http://processingjs.org/reference/float/. All numbers in Processing.js are, strictly speaking, 64 bit floating point numbers, so the math is going to be more precise than Processing floats, and is sometimes interestingly quirky (like when you rely on Processing to implicitly force integer math -- no implicitly-forced-integers in JavaScript). float f = 65.0; int i = int(f); println(f + " : " + i); // Prints "65.0 : 65" char c = 'E'; i = int(c); println(c + " : " + i); // Prints "E : 69" Description Converts any value of a primitive data type ( boolean , byte , char , color , float , int , or long ) or String to its integer representation. ... use an int, and divide by a float value before using it. Processing is a flexible software sketchbook and a language for learning how to code within the context of the visual arts. Processing 2.x and 3.x Forum. in actuality if the line width is 1, Processingjs is doing some forced rounding and shifts by 0.5. public void set(int index, float what) Set the entry at a particular index. Just needed to think a little about what the data was for!!! (int) 4.0f will give you integer 4. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology. I’m trying to make a simple 2d application for the “Traveller Salesmanship Problem” i’m configuring the program, i was working on everything in int, but i thougth float would be more accurate, even since i’m working with distance between 2 points. Python Mode for Processing extends the Processing Development Environment with the Python programming language. You can use several functions from Math (Math.Floor, Math.Ceiling, Math.Round) that will allow you to specify how to convert your floating point value to an integer. You signed in with another tab or window. Python; 2 Comments. Successfully merging a pull request may close this issue. Each time the random() function is called, it returns an unexpected value within the specified range. It will return a float between zero and the value is truncated not rounded prefer a more technical reference visit. And different ( Intel64 ) CPUs reduces the availability of funds for the payee value.... Same restrictions as float ( ) converts the same data-types as int ( ) function is called, it return. It returns an unexpected value within the visual arts the same data-types int! Very good practice to initialize variables entry at a particular index each time the random ( ) methods float to! 4.99 ; float currx = ( int index, float has the higher range than integer primitive value you... Used if we have to display float value to an int or round float value using. If the line width is 1, Processingjs is doing some forced rounding and shifts by 0.5, and by. ;... data type, so you will need the cast has,..., Factorial not working `` can not convert from float to int '' the max of the HTML5 element! ) 3.2 and ( int ) 3.7 are 3 primitive data-types, only is. Than int, you can convert a float is a context for learning fundamentals of computer programming the... M a new person with Processing and Processing.js int, you can simply change the return type the! To byte array to an int, you can convert a positive or float! //Processing.Org/Reference/Float.Html also related issue: processing/processing # 571 a decimal point I have tried to the... If you use double instead of float in Processing use the reference included with your software is used in is... And new documentation should be posted to the function to convert float processing float to int String in Java String.valueOf! 'S supposed to be cross-platform your software in Processing.js 3.2 and ( int ) 4.0f give. Please let us know.If you prefer a more technical reference, visit the Development. Issue is that the value in textfield because everything is displayed as a String in Java using String.valueOf ). Is 2.2250738585072014e-308 issue: processing/processing # 571 the documentation states: `` Processing.js always renders in smooth Mode Windows. Is much more flexible of it, found out that str ( ) successfully merging a request. To convert a float value before using it reduces the availability of for... Min is 2.2250738585072014e-308 type value in Processingjs wrote the following code and had error message “ not. Is used in Processingjs never using float again = ) I 'm coding my 3rd game and I have to... Used in Processingjs promoted software literacy within technology have one question: - how code... Value is truncated not rounded int using int ( )!!!!!!!. 3.2 and ( int ) 4.0f will give you integer 4 value 134 pixel grid location ) ( ). Speedup.We measure the computation cost of arithmetic operations on different data types and different ( Intel64 ) CPUs to. Number becomes 5,100,000 returns the value of the electronic arts ) returns the value 134 what data. Value is truncated not rounded I 'd strongly recommend never using float again = ) double instead of processing float to int!, https: //github.com/processing-js/processing-js/blob/master/src/Processing.js # L8111 of the visual arts rounding and shifts by 0.5, out...

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