Agena

2.16.0, August 03, 2019 - The new operator `zero` checks whether a number or complex number is zero, and the new operator `nonzero` does the opposite. Both are around 8 percent faster than using the binary `=` or `<>` operators. The two new operators support metamethods. - Because `zero` is now a keyword, the function `calc.zero` had to be renamed to `calc.zeros`, and `linalg.zero` to `linalg.zerovector`. - The new function `math.floorpow2` is the opposite to `math.ceilpow2` and rounds down to the previous highest power of 2. - `math.ispow2` now can detect powers of two if its argument is greater than 2^31. The function returns `fail` if its argument is greater than 2^53 or if it is negative. - `math.ceilpow2` now returns `fail` instead of just overflowing if its agument is greater or equal 2^31. - `math.isirregular` could not correctly detect non-representable integers in the vicinity of the 2^53 threshold. This has been fixed.