std:: isgreaterequal

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isgreaterequal
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Defined in header <cmath>
(1)
bool isgreaterequal ( float x, float y ) ;

bool isgreaterequal ( double x, double y ) ;

bool isgreaterequal ( long double x, long double y ) ;
(since C++11)
(until C++23)
constexpr bool isgreaterequal ( /* floating-point-type */ x,
/* floating-point-type */ y ) ;
(since C++23)
Defined in header <cmath>
template < class Arithmetic1, class Arithmetic2 >
bool isgreaterequal ( Arithmetic1 x, Arithmetic2 y ) ;
(A) (since C++11)
(constexpr since C++23)
1) Determines if the floating point number x is greater than or equal to the floating-point number y , without setting floating-point exceptions. The library provides overloads for all cv-unqualified floating-point types as the type of the parameters x and y . (since C++23)
A) Additional overloads are provided for all other combinations of arithmetic types.

Parameters

x, y - floating-point or integer values

Return value

true if x >= y , false otherwise.

Notes

The built-in operator >= for floating-point numbers may raise FE_INVALID if one or both of the arguments is NaN. This function is a "quiet" version of operator >= .

The additional overloads are not required to be provided exactly as (A) . They only need to be sufficient to ensure that for their first argument num1 and second argument num2 :

  • If num1 or num2 has type long double , then std :: isgreaterequal ( num1, num2 ) has the same effect as std :: isgreaterequal ( static_cast < long double > ( num1 ) ,
    static_cast < long double > ( num2 ) )     .
  • Otherwise, if num1 and/or num2 has type double or an integer type, then std :: isgreaterequal ( num1, num2 ) has the same effect as std :: isgreaterequal ( static_cast < double > ( num1 ) ,
    static_cast < double > ( num2 ) )     .
  • Otherwise, if num1 or num2 has type float , then std :: isgreaterequal ( num1, num2 ) has the same effect as std :: isgreaterequal ( static_cast < float > ( num1 ) ,
    static_cast < float > ( num2 ) )     .
(until C++23)

If num1 and num2 have arithmetic types, then std :: isgreaterequal ( num1, num2 ) has the same effect as std :: isgreaterequal ( static_cast < /* common-floating-point-type */ > ( num1 ) ,
static_cast < /* common-floating-point-type */ > ( num2 ) ) , where /* common-floating-point-type */ is the floating-point type with the greatest floating-point conversion rank and greatest floating-point conversion subrank between the types of num1 and num2 , arguments of integer type are considered to have the same floating-point conversion rank as double .

If no such floating-point type with the greatest rank and subrank exists, then overload resolution does not result in a usable candidate from the overloads provided.

(since C++23)

See also

function object implementing x >= y
(class template)
(C++11)
checks if the first floating-point argument is less or equal than the second
(function)
C documentation for isgreaterequal
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