// C++ code to demonstrate the example of// ceil() function#include<iostream>#include<cmath>usingnamespacestd;// main() sectionintmain(){floatx;//input the numbercout<<"Enter a float value:";cin>>x;//printing the round up valuecout<<"ceil("<<x<<"):"<<ceil(x)<<endl;return0;...
intmain() { // using ceil function which return // floor of input value cout<<" Ceil is : "<<ceil(2.3)<<endl; cout<<" Ceil is : "<<ceil(-2.3)<<endl; return0; } Ceilis:3 Ceilis:-2 注:本文由VeryToolz翻译自Ceil and Floor functions in C++,非经特殊声明,文中代码和图片版权归...
Tip:To round a number DOWN to the nearest integer, look at thefloor()function. Tip:To round a number to the nearest integer in either direction, look at theround()function. Syntax One of the following: ceil(doublenumber); ceil(floatnumber); ...
Theceil()function returns: the smallest possible integer value which is greater than or equal tonum ceil() Prototypes The prototypes forceil()as defined in the cmath header file are: doubleceil(doublenum);floatceil(floatnum);longdoubleceil(longdoublenum);// for integral typesdoubleceil(T num...
C++ Math ceil()函数 它将值四舍五入到最接近且不小于给定值的整数。 例如: ceil(8.1)=9.0; ceil(-8.8)=-8.0; 语法 假设一个数是'x'。语法如下: double ceil(double x); 参数 x :它是四舍五入到最近整数的值。 返回值 它返回不小于x的最小整数值。 示例1 让
If you use the <tgmath.h>ceil()macro, the type of the argument determines which version of the function is selected. SeeType-generic mathfor details. By default, this function's global state is scoped to the application. To change this state, seeGlobal state in the CRT. ...
...open: generic_file_open, release: ext2_release_file, fsync: ext2_sync_file, }; 但是,Linux...C99已经支持__func__宏,因此建议在Linux编程中不再使用__FUNCTION__,而转而使用__func__: void example(void) { printf("This...Linux内核编程时常用的likely()和unlikely()底层调用的likely_no...
The largest representable floating-point values are exact integers in all standard floating-point formats, so this function never overflows on its own; however the result may overflow any integer type (includingstd::intmax_t), when stored in an integer variable. It is for this reason that the...
The ceil function does not generate any errors. API Syntax Buffer API namespace oneapi::mkl::vm { sycl::event ceil(sycl::queue & exec_queue, std::int64_t n, sycl::buffer<T> & a, sycl::buffer<T> & y, oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined); } ...
Prior toP1956R1, the proposed name for this function template wasceil2. Feature-testmacroValueStdFeature __cpp_lib_int_pow2202002L(C++20)Integral power-of-2operations Possible implementation See possible implementations inlibstdc++ (gcc)andlibc++ (clang). ...