Menu
Search

API Documentation

version 2.104.0

overview

View source code
Display the source code in std/checkedint.d from which this page was generated on github.
Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

Function std.checkedint.WithNaN.hookOpBinary

Defines hooks for binary operators +, -, *, /, %, ^^, &, |, ^, <<, >>, and >>> for cases where a Checked object is the left-hand side operand. If lhs == WithNaN.defaultValue!Lhs, returns WithNaN.defaultValue!(typeof(lhs + rhs)) without evaluating the operand. Otherwise, evaluates the operand. If evaluation does not overflow, returns the result. Otherwise, returns WithNaN.defaultValue!(typeof(lhs + rhs)).

auto hookOpBinary(string x, L, R) (
  L lhs,
  R rhs
);

Parameters

NameDescription
x The operator symbol
lhs The left-hand side operand (Lhs is the first argument to Checked)
rhs The right-hand side operand

Returns

If lhs != WithNaN.defaultValue!Lhs and the operator does not overflow, the function returns the same result as the built-in operator. In all other cases, returns WithNaN.defaultValue!(typeof(lhs + rhs)).

Example

Checked!(int, WithNaN) x;
assert((x + 1).isNaN);
x = 100;
assert(!(x + 1).isNaN);

Authors

License