C++ round() function: Here, we are going to learn about the round() function with example of cmath header in C++ programming language? Submitted by IncludeHelp, on April 27, 2019 C++ round() functionround() function is a library function of cmath header, it is used to round the given...
integral (as a floating-point value). // C++ code to demonstrate the// use ofround() function#include<cmath>#include<iostream>usingnamespacestd;// Driver programintmain(){// initializing valuedoublex =12.5, y =13.3, z =14.8;// Displaying the nearest values// of x, y and zcout<<"...
The prototypes of the round() function as defined in the cmath header file are: double round(double num); float round(float num); long double round(long double num); // for integral type double round(T num); Example 1: C++ round() #include <iostream> #include <cmath> using namespa...
In addition to the examples in the Remarks section, this article includes examples that illustrate the following overloads of the Math.Round method:Math.Round (Decimal) Math.Round (Double) Math.Round (Decimal, Int32) Math.Round (Decimal、MidpointRounding) Math.Round (Double、Int32) Math....
If the result oflroundorllroundis outside the range representable by the return type, a domain error or a range error may occur. If the implementation supports IEEE floating-point arithmetic (IEC 60559): For theround,roundf, androundlfunction: ...
Use theround()Function fordoubletointRounding in C++ Theround()function is defined in the<cmath>header. It can compute the nearest integer value of the argument that the user passes. Halfway cases are rounded away from zero, and the returned value is the same type as the argument. In th...
Because C++ allows overloading, you can call overloads ofroundthat take and returnfloatandlong doublevalues. In a C program, unless you're using the<tgmath.h>macro to call this function,roundalways takes and returns adouble. If you use theroundmacro from<tgmath.h>, the type of the arg...
If you use the <tgmath.h>lround()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 behavior, seeGlobal state in the CRT. ...
The results of floating-point arithmetic operators in constant expressions, which always round to the nearest value. To use these functions, you must turn off floating-point optimizations that could prevent access by using the#pragma fenv_access(on)directive prior to the call. For more information...
7.6.3.2 The fesetround function (p: TBD) C17 standard (ISO/IEC 9899:2018): 7.6.3.1 The fegetround function (p: TBD) 7.6.3.2 The fesetround function (p: TBD) C11 standard (ISO/IEC 9899:2011): 7.6.3.1 The fegetround function (p: 212) 7.6.3.2 The fesetround function (p...