Double to hex и обратно
Какое бы ни было число в памяти компьютера всё равно оно представлено в виде 0 и 1, как всем известно. Мне нужно преобразовать double в hex, чтобы хранить его в целочисленной константе enum (а enum как известно это тот же int). Мой план действий состоит в следующем:
Чтобы записать double в целочисленный enum я набросал следующую программу:
float в HEX и обратно
У меня возникли трудности с конвертацией числа типа float (например 2.534) в 4 байта HEX (например.
Как перевести строку в hex и обратно?
Немогу найти в гугле функцию какбы перевести строку в hex и обратно, мб у кого завалялась?
Конвертирование числа double в hex string и обратно
Нашел отличный код ‘ This uses .NET converters to convert from double to hex string and back .
Текст в HEX и обратно
Привет, мне надо сделать что-то подобное этому: Я создаю систему ключей для программы и хочу.
Решение
Просто для моей задачи нужно именно такое представление, в качестве констант enum’a. Тогда с ними очень легко работать. На самом деле мне не обязательно double, потому как и float мне больше чем достаточно. Переделал Ваш пример на float, всё работает как часы 
Огромное Вам спасибо!
Добавлено через 21 минуту
Хотя, uint32_t (в случае с преобразованием float в hex) исчисляется начиная от 0, в то время как int (в данном случае enum) от -2 147 483 648, если я правильно всё понимаю. Могут ли возникать проблемы при конвертации или uint32_t корректно впишется в enum?
Добавлено через 9 минут
Порядок. Вместо uint32_t использовал int32_t. По идее, должно работать.
Заказываю контрольные, курсовые, дипломные и любые другие студенческие работы здесь.
Перевод текста в HEX и обратно
Как можно с помощью JavaScript перевести текст в HEX и обратно? Надо что бы переводилась строка.
Перевод из текста в hex и обратно
Доброго времени суток. Прошу помощи в решении задачи: в edit вводим текст к примеру «Конст», по.
TColor->HEX->String->File и обратно
Никто не подскажет, как это сделать — вроде как пытался так: tmpSt:=’AAE2B0′.
Перевод содержимого файла в hex и обратно
Здравствуйте, есть необходимость создания hex редактора в QT, так с открытием файла разобрался.
Tools & Thoughts
This page allows you to convert between the decimal representation of numbers (like «1.02») and the binary format used by all modern CPUs (IEEE 754 floating point).
Update
There has been an update in the way the number is displayed. Previous version would give you the represented value as a possibly rounded decimal number and the same number with the increased precision of a 64-bit double precision float. Now the original number is shown (either as the number that was entered, or as a possibly rounded decimal string) as well as the actual full precision decimal number that the float value is representing. Entering «0.1» is — as always — a nice example to see this behaviour. The difference between both values is shown as well, so you can easier tell the difference between what you entered and what you get in IEEE-754.
This webpage is a tool to understand IEEE-754 floating point numbers. This is the format in which almost all CPUs represent non-integer numbers. As this format is using base-2, there can be surprising differences in what numbers can be represented easily in decimal and which numbers can be represented in IEEE-754. As an example, try «0.1». The conversion is limited to 32-bit single precision numbers, while the IEEE-754-Standard contains formats with increased precision.
Usage:
You can either convert a number by choosing its binary representation in the button-bar, the other fields will be updated immediately. Or you can enter a binary number, a hexnumber or the decimal representation into the corresponding textfield and press return to update the other fields. To make it easier to spot eventual rounding errors, the selected float number is displayed after conversion to double precision.
Special Values:
You can enter the words «Infinity», «-Infinity» or «NaN» to get the corresponding special values for IEEE-754. Please note there are two kinds of zero: +0 and -0.
Conversion:
The value of a IEEE-754 number is computed as:
sign 2 exponent mantissa
The sign is stored in bit 32. The exponent can be computed from bits 24-31 by subtracting 127. The mantissa (also known as significand or fraction) is stored in bits 1-23. An invisible leading bit (i.e. it is not actually stored) with value 1.0 is placed in front, then bit 23 has a value of 1/2, bit 22 has value 1/4 etc. As a result, the mantissa has a value between 1.0 and 2. If the exponent reaches -127 (binary 00000000), the leading 1 is no longer used to enable gradual underflow.
Underflow:
If the exponent has minimum value (all zero), special rules for denormalized values are followed. The exponent value is set to 2 -126 and the «invisible» leading bit for the mantissa is no longer used.
The range of the mantissa is now [0:1).
Note: The converter used to show denormalized exponents as 2 -127 and a denormalized mantissa range [0:2). This is effectively identical to the values above, with a factor of two shifted between exponent and mantissa. However this confused people and was therefore changed (2015-09-26).
Rounding errors:
Not every decimal number can be expressed exactly as a floating point number. This can be seen when entering «0.1» and examining its binary representation which is either slightly smaller or larger, depending on the last bit.
Other representations:
The hex representation is just the integer value of the bitstring printed as hex. Don’t confuse this with true hexadecimal floating point values in the style of 0xab.12ef.
FAQ (Frequently Asked Questions):
Can you send me the source code? I need to convert format x to format y.:
This source code for this converter doesn’t contain any low level conversion routines. The conversion between a floating point number (i.e. a 32 bit area in memory) and the bit representation isn’t actually a conversion, but just a reinterpretation of the same data in memory. This can be easily done with typecasts in C/C++ or with some bitfiddling via java.lang.Float.floatToIntBits in Java. The conversion between a string containing the textual form of a floating point number (e.g. «3.14159», a string of 7 characters) and a 32 bit floating point number is also performed by library routines. If you need to write such a routine yourself, you should have a look at the sourecode of a standard C library (e.g. GNU libc, uclibc or the FreeBSD C library — please have a look at the licenses before copying the code) — be aware, these conversions can be complicated.
Can you add support for 64-bit float/16-bit float/non-IEEE 754 float?.:
This page relies on existing conversion routines, so formats not usually supported in standard libraries cannot be supported with reasonable effort. Double-precision (64-bit) floats would work, but this too is some work to support alongside single precision floats. As the primary purpose of this site is to support people learning about these formats, supporting other formats is not really a priority.
I’ve converted a number to floating point by hand/some other method, and I get a different result. Your converter is wrong!
Possible, but unlikely. The conversion routines are pretty accurate (see above). Until now, checking the results always proved the other conversion less accurate. First, consider what «correct» means in this context — unless the conversion has no rounding error, there are two reasonable results, one slightly smaller the entered value and one slightly bigger. The best result is usually the one closer to the value that was entered, so you should check for that. Please check the actual represented value (second text line) and compare the difference to the expected decimal value while toggling the last bits.
Note: If you find any problems, please report them here.
Welcome to Binary Hex Converters!
By using our new effective conversion tools, you can easily convert bin, hex, decimal, binary and ascii numbers to each other. All you need is to open your conversion pair page and type the number in the relevant box. In addition to that, we also help you with the basic information you need to know about these conversions. Try our new excellent and convenient binary, hexadecimal, decimal calculator online right now!
Binary Converters
Hexadecimal Converters
Decimal Converters
Ascii Text Converters
Octal Converters
Updates
- Padding option added to converters. 12 September 2020
- Swap conversion links added to converters. 15 April 2020
- New tool Octal To Binary Converter is added. 14 April 2020
- New tool Hex to Ascii (String) Converter is added. 14 April 2020
- New tool Binary to Octal Converter is added. 14 April 2020
- New tool Octal To Decimal Converter is added. 12 April 2020
- All of the conversion tables are updated in the converter pages. 24 March 2020
- Ascii Text To Binary Converter content is updated.
Ascii Text To Decimal Converter content is updated.
Ascii Text To Hexadecimal Converter content is updated. 28 October 2019 - Decimal To Hex Converter content is updated.
Decimal To Octal Converter content is updated. 17 October 2019 - Hex To Binary Converter content is updated. 15 October 2019
- Binary To Ascii Text Converter content is updated. 14 October 2019
- Binary To Hex Converter content is updated. 12 October 2019
- Binary To Decimal Converter content is updated. 12 October 2019
- Website design improved for better. We also updated the contents of binary and decimal system information.
Also we updated Binary to Decimal Converter 14 May 2019 - We just moved to secured connection layer. Now you can use our website in an encrypted connection. 21 December 2017
- Binary Ascii Conversion Table updated for better reading on mobile devices.
Speed optimization applied to improve site loading time. 04 October 2016 - Ascii text converters are updated and fixed special characters conversion. 23 September 2015
- Bug fixed when there is space between input number digits. 4 September 2015
- We launched our simple android application, you can get Android App on the store. 30 June 2015
- Maximum hexadecimal number validation fixed. Max. hex value is 7fffffffffffffff. 26 November 2014
- Binary and hexadecimal number validation fixed. 22 September 2014
- Now you can convert up to 32 hexadecimal characters to decimal number. 21 September 2014
- We’ve started our offical twitter account,
please Follow @BinHexConverter. 16 September 2014 - Site background changed for better reading and calculation. 12 September 2014
- Ascii to decimal and hexadecimal converters added. 2 August 2014
- The information of hexadecimal is updated, info about html color hex is corrected. 16 July 2014
- Extra bit error is fixed in ascii to binary conversion. 12 July 2014
- Number system informations have been updated. 31 May 2014
- Conversion form background colors and form input styles are updated for easier focus on the calculator. 26 May 2014
- The design of binaryhexconverter.com was updated for better reading and easier navigation through the website. Please, contact me with any issue or any suggestion as to the website design and work. 24 May 2014
We recommend gbmb.org for unit of data storage conversion.
Recent Comments
Nandini, it’s 00000001-01000011 as size labeled WORD. It divided to be bytes.
amazing tool it helps me alot
Great website! Thanks, developer! 🙂
Please tell me the answer for 323 conversation into binary no. System
its very good it was hard to me when i was learning number system. But now it is very easy. Thank you
Any chance of a hexbin to hex convertor
I need answer for the binary, octal and hexadecimal numbers