ckd_mul

Defined in header <stdckdint.h>
template < class type1, class type2, class type3 > bool ckd_mul ( type1 * result, type2 a, type3 b ) ;		(since C++26)

Computes the multiplication x × y and stores the result into * result . The multiplication is performed as if both operands were represented in a signed integer type with infinite range, and the result was then converted from this integer type to type1 . If the value assigned to * result correctly represents the mathematical result of the operation, it returns false . Otherwise, it returns true . In this case, the value assigned to * result is the mathematical result of the operation wrapped around to the width of * result .

Contents 1 Parameters 2 Return value 3 Note 4 Example 5 References 6 See also

Parameters

a, b	-	integer values
result	-	address of where result should be stored

Return value

false if the value assigned to * result correctly represents the mathematical result of the multiplication, true otherwise.

Note

The function template ckd_mul has the same semantics as the corresponding type-generic macro with the same name specified in C23 .

Each of the types type1 , type2 , and type3 is a cv-unqualified signed or unsigned integer type.

It is recommended to produce a diagnostic message if type2 or type3 are not suitable integer types, or if * result is not a modifiable lvalue of a suitable integer type.

Example

This section is incomplete Reason: no example

References

See also

ckd_add (C++26)	checked addition operation on two integers (function template)
ckd_sub (C++26)	checked subtraction operation on two integers (function template)
C documentation for ckd_mul