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Function std.experimental.checkedint.WithNaN.hookOpCast

If rhs is WithNaN.defaultValue!Rhs, returns WithNaN.defaultValue!Lhs. Otherwise, returns cast(Lhs) rhs.

Lhs hookOpCast(Lhs, Rhs) (
  Rhs rhs
);

Parameters

NameDescription
rhs the value being cast (Rhs is the first argument to Checked)
Lhs the target type of the cast

Returns

The result of the cast operation.

Example

auto x = checked!WithNaN(422);
writeln((cast(ubyte)x)); // 255
x = checked!WithNaN(-422);
writeln((cast(byte)x)); // -128
writeln(cast(short)x); // -422
assert(cast(bool) x);
x = x.init; // set back to NaN
assert(x != true);
assert(x != false);

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