![]() In this case, the usual arithmetic conversions are performed on both operands and determine the type of the result. both have arithmetic or unscoped enumeration type.The unary arithmetic operator expressions have the formįor the built-in operator, lhs and rhs must be one of the following: Unrelated to contracting, intermediate results of floating-point arithmetic may have range and precision that is different from the one indicated by its type, see FLT_EVAL_METHOD.įormally, the C++ standard makes no guarantee on the accuracy of floating-point operations. For example, C++ allows the implementation of (x * y ) + z with a single fused multiply-add CPU instruction or optimization of a = x * x * x * x as tmp = x * x a = tmp * tmp. #pragma STDC FP_CONTRACT is supported and set to OFF, all floating-point arithmetic may be performed as if the intermediate results have infinite range and precision, that is, optimizations that omit rounding errors and floating-point exceptions are allowed. #pragma STDC FENV_ACCESS is supported and set to ON, all floating-point arithmetic operators obey the current floating-point rounding direction and report floating-point arithmetic errors as specified in math_errhandling unless part of a static initializer (in which case floating-point exceptions are not raised and the rounding mode is to nearest). it is completely optimized out by the compiler.it saturates to minimal or maximal value (on many DSPs),.it traps - on some platforms or due to compiler options (e.g. ![]() it wraps around according to the rules of the representation (typically 2's complement),.When signed integer arithmetic operation overflows (the result does not fit in the result type), the behavior is undefined, - the possible manifestations of such an operation include: for unsigned int, adding one to UINT_MAX gives 0, and subtracting one from 0 gives UINT_MAX. Where n is the number of bits in that particular integer. Unsigned integer arithmetic is always performed modulo 2 n If an operand has array or function type, array-to-pointer and function-to-pointer conversions are applied.įor the binary operators (except shifts), if the promoted operands have different types, usual arithmetic conversions are applied. If the operand passed to an arithmetic operator is integral or unscoped enumeration type, then before any other action (but after lvalue-to-rvalue conversion, if applicable), the operand undergoes integral promotion. 2.6 Stream insertion/extraction operatorsĪll arithmetic operators compute the result of specific arithmetic operation and returns its result.In particular, stream insertion and stream extraction overloads of operator > return T&. However, in a user-defined operator overload, any type can be used as return type (including void). All built-in operators return values, and most user-defined overloads also return values so that the user-defined operators can be used in the same manner as the built-ins.T operator > ( const T &a, const T2 &b ) T operator ^ ( const T &a, const T2 &b ) T operator | ( const T &a, const T2 &b ) T operator & ( const T &a, const T2 &b ) ![]() T operator % ( const T &a, const T2 &b ) T operator / ( const T &a, const T2 &b ) T operator * ( const T &a, const T2 &b ) T operator - ( const T &a, const T2 &b ) T operator + ( const T &a, const T2 &b ) Satisfying the following condition (cf.Returns the result of specific arithmetic operation. A non-zero lower semi-continuous semi-finite trace $ f $
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