```{index} single: op_numify; Math::GMP function ``` ```{index} single: Math::GMP::op_numify; Perl function ``` # op_numify Overloaded `0+` — convert a `Math::GMP` to a plain Perl number. Invoked when a `Math::GMP` is used in numeric context outside of the overloaded arithmetic operators (for example, passed to a function that does `$arg + 0`). Precision is limited to what an `IV` or `UV` can hold; for large values the top bits are lost. Call `intify` or `uintify` if you want to be explicit about the cast, or stringify if you want to keep all the digits.