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tree.Expiry of HrtimerHrtimer in the Hrtimer_run_queues function to determine whether the execution is due. The Hrtimer_run_queues call chain is: Linux's system clock function->update_process_times->run_local_timers->hrtimer_run_queues.void Hrtimer_run_queues (void)Determines whether the high-precision mode, if it is high-precision mode, returns immediately. This article does not consider this situation te

I have been looking for precision and recall how to calculate, because always call the function of the relationship, I thought that TensorFlow has been encapsulated to write such a call method, has not been found, seems to be too lazy, lost the desire to do, in the following address to see the code written by others, Although it can not be used, it is also very important to inspire. Https://gist.github.com/Mistobaan/337222ac3acbfc00bdac def tf_confu

From: http://blog.csdn.net/walkingman321/article/details/6151172 This article introduces the difference between setting the hrtimer in high precision mode and setting the hrtimer in linux2.6.29. This article does not consider the impact of high-precision mode on clock interruption in Linux. When the high-precision mode is not configured, The hrtimer timeout is c

Engaged in the financial industry, capital operations frequently, here I met the pit .... Slightly inattentive, the user funds may lose hundreds of thousands of, even more terrible ... Go directly to the example:Javascript0.1 + 0.2 Why isn't it equal to 0.3? (correct result: 0.30000000000000004)0.8 * 7 Why not equal to 5.6? (correct result: 5.6000000000000005)PhpVar_dump (intval (0.58 * 100));The correct result is 57, not 58The curse of floating-point arithmeticIn fact, these results are not the

Floating point numbers are the ones with decimals, and they are not just numbers. when I use the payment interface, I have encountered the problem of floating point loss. let's take a look at the solution. let's take a look at the following code: $ f0.57; e... floating point numbers are the ones with decimals, and they are not just numbers. when I use the payment interface, I have encountered the problem of floating point loss. let's take a look at the solution. Let's take a look at the followi

Author: jillzhang Contact: jillzhang@126.com This article is original and reposted. Please retain the source and author. Thank you. In C and C # languages, float and double types are used for data of the floating point type for storage. float data occupies 32 bits and double data occupies 64 bits, how do we allocate memory when declaring a variable float F = 2.25f? If it is randomly allocated, isn't the world a mess? In fact, both float and double are in compliance with IEEE specifications in te

automatically omits the highest 1, so the storage is 23 bits actually 24 bits. (Decimal position is 2^ (23) =8388608 7 digits calculated as 6-digit precision)For a chestnut: 3.2fConvert to binary storage: integral part 32 binary 11Fractional part 0.2 is converted to binary (by 2 to the integer portion until the fractional part is divided into 0)----> (decimal by 2) 0.4 0.8 1.6 1.2 0.4 0.8 1.6 1.2 0.4 ... (Infinite Loop)The result is: 11.00 1100 11001

This article mainly introduces the PHP floating point Precision problem summary, this article discusses the PHP floating point precision loss problem emphatically, uses the three paragraph different way to explain this question formation reason and the solution, needs the friend to be possible to refer to under A, PHP floating point accuracy loss problem Let's look at the following code: The code is as f

Meaning Give n high precision numbers to determine whether the equal ratio sequence. Range: 0 Analysis: According to the question, this problem must be solved with high precision, using the array simulation multiplication calculation process. Determine whether the equal-ratio sequence method: a[i],a[i+1],a[i+2], for arbitrary I, have a[i]*a[i+2]=a[i+1]*a[i+1]. Therefore, a high-

Recently used in the temperature and humidity sensor, AM2305 drive, single bus, on the power of at least 2S to read temperature and humidity, temperature accuracy is high, like DS18B20, data with the checksum, will not appear ds18b20, and the timing is not high /************************************************************************************************************* * FileName: am2305.c * function: STM32 AM2305 high precision temperature and hu

. -------------------------------------------------------------------------------- 5. timegettime () T, imegettime () is basically equal to gettickcount (), but the accuracy is higher DWORD dwstart = timegettime (); // Run your program code here DWORD dwend = timegettime (); Then (dwend-dwstart) Is your program running time, in milliseconds Although the unit of returned values should be ms, the legend shows that the precision is only 10 ms. ==========

This article is divided into three parts Some typical problems of JS digital precision loss The reason for the loss of JS digital precision Solution (one object + one function) Some typical problems of JS digital precision loss 1. Two simple floating-point numbers added 0.1 + 0.2!= 0.3/True This is really not a Firebug problem, y

Label:double and float are floating point types. Doubles (double type) are more accurate than float (single-precision) data and occupy more space. Double precision is twice times that of float, so a double is often used for more precise calculations. Single-precision floating-point numbers account for 4 bytes in the machine and are described in 32-bit binary.Doub