That sub will be called whenever an object is used in a context that expects a number.

The only way I can find of having that sub called is by doing int($obj).
Do you have an example of another way ?

On Windows (where sizeof(long) is 4): 
C:\>perl -MMath::GMP -le "print int(Math::GMP->new(311) ** 100);"
385227681

[download]
Math::GMPz achieves the same result with: 
C:\>perl -MMath::GMPz=":mpz" -le "print Rmpz_get_ui(Math::GMPz->new(31
+1) ** 100);"
385227681

alternatively:

C:\>perl -MMath::GMPz -le "$x = (Math::GMPz->new(311) ** 100) & 429496
+7295; print $x;"
385227681

[download]
though, in this very last example, $x is a Math::GMPz object, not an IV.

Cheers,
Rob

In reply to Re^4: How does Math::GMP overload the assignment operator ? (more guessing) by syphilis
in thread How does Math::GMP overload the assignment operator ? by syphilis

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