I'm revisiting a question (How to test if numeric conversion will change value?) that as far as I was concerned was fully solved. The problem was to detect when a particular numeric value would overflow JavaScript's IEEE-754 Number type. The...
I have integer, for example, 4060.  How I can get HEX float (\x34\xC8\x7D\x45) from it?  JS hasn't float type, so I don't know how to do this conversion.  Thank you....
Suppose I have a hex number "4072508200000000" and I want the floating point number that it represents (293.03173828125000) in IEEE-754 double format to be put into a JavaScript variable.  I can think of a way that uses some masking and a cal...
I need to encode and decode IEEE 754 floats and doubles from binary in node.js to parse a network protocol.  Are there any existing libraries that do this, or do I have to read the spec and implement it myself? Or should I write a C module to do it?...
JavaScript uses IEEE 754 for storing numbers, for both integer and floating point values, where 53 bits are used for representing the mantissa and 11 bits are used for representing the exponent.  The maximum value representable with a signed 53 bit i...
What's the easiest way to convert a floating point number to its binary representation in Javascript? (e.g. 1.0 -> 0x3F800000).  I have tried to do it manually, and this works to some extent (with usual numbers), but it fails for very big or v...
In the repository code, in a module developed by another team, I discovered that there is a conversion of a price from cents to euro, just dividing the number by 100.  The code is in Javascript, so it uses the IEEE 754 standard.  I know that is not s...
How can I efficiently check in asm.js code whether a floating point value is a NaN?  A way that works in principle is to import the global isNaN JavaScript function as a foreign function into the asm.js module. As calling foreign function is expensiv...
IEEE-754 64 bit double precision floating point can't represent the integer 9007199254740995 and it stores instead 9007199254740996. Why not 9007199254740994?  I'm wondering what rules define this process? Does the integer get rounded? Are th...
According to Is floating point math broken?, I know 0.1 cannot represent exactly in floating point numbers and will be rounded to some values.  According to Is hardcode float precise if it can be represented by binary format in IEEE 754?, some number...

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