float(0.1), and double(0.1). In C/C++ 0.1 and double(0.1) are the same thing, but when I say “0.1” in text I mean the exact base-10 number, whereas float(0.1) and double(0.1) are rounded versions of 0.1. And, to be clear, float(0.1) and double(0.1) don’t have the same...
#include <float.h> // FLT_RADIX // reference: http://www.cplusplus.com/reference/cmath/ #define PI 3.14159265 namespace cmath_ { int test_cmath_abs() { { // std::abs: double/float/long double/T std::cout << "abs (3.141611111) = " << std::abs(3.141611111) << '\n'; //...
#include <stdio.h> // 通用比较函数 int compare(const void *a, const void *b) { int intA = *(int *)a; int intB = *(int *)b; return intA - intB; } int main() { int values[] = {3, 1, 4, 1, 5, 9, 2, 6, 5, 3}; qsort(values, sizeof(values) / sizeof(values...
⎧⎪⎨⎪⎩Xq=(int)Xf∗2nXf=(float)Xf∗2−n 其中Xq 为Qm.n ,m表示整数位数,n表示小数位数; 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #include <stdio.h> #include <stdint.h> #include <math.h> int main() { // 0111 1111 1111 1111 int16_t q_max = 32767; //...
float Q_rsqrt( float number ) { long i; float x2, y; const float threehalfs = 1.5F; x2 = number * 0.5F; y = number; i = * ( long * ) &y; // evil floating point bit level hacking i = 0x5f3759df - ( i >> 1 ); // what the fuck? y = * ( float * ) &i;...
$entries=array_values($results); usort($entries, array($this,'resultEntryCompare')); $this->render('profile-summary',$entries); } Displays the summary report of the profiling result. getReport()method public stringgetReport() {return}stringthe type of the profiling report to display. Default...
memcmp() — Compare bytes memcpy() — Copy buffer memmove() — Move buffer memset() — Set buffer to value m_getvalues_layout() — Query layout values of a layout object (bidi data) mkdir() — Make a directory mkfifo() — Make a FIFO special file mknod() — Make a dir...
The expansion compresses the generated output by more than a factor 10 ensuring that code under source control does not explode and making it possible to compare versions of generated code in a meaningful manner and see if it matches the intended schema. The macros are also important for dealin...
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(float)1.12345678 log(1.1) DBL_MAX + DBL_MAX, when no overflow trap The result of the operation (rounded, overflowed, or underflowed) 4.1.1 Notes for Table 4-11. Unordered comparison: Any pair of floating point values can be compared, even if they are not of the same format. Fo...