Change Details

...wrapping to fit it in, but is otherwise a drop-in replacement. Testing this is hard, as most maths packages blow up as soon as their 80-bit floating-point capability is exceeded. With 128-bit tgammal(), this is easy to do, and this is the range that needs to be checked the most carefully. Using my copy of Maple, I was able to check that the output was withing a few ULP of the correct answer, right up to the point of 128-bit over- and underflow. Additionally, the results are no worse, and indeed better than the 80-bit version.

...wrapping to fit it in, but is otherwise a drop-in replacement. Testing this is hard, as most maths packages blow up as soon as their 80-bit floating-point capability is exceeded. With 128-bit tgammal(), this is easy to do, and this is the range that needs to be checked the most carefully. Using my copy of Maple, I was able to check that the output was within a few ULP of the correct answer, right up to the point of 128-bit over- and underflow. Additionally, the results are no worse, and indeed better than the 80-bit version.

...wrapping to fit it in, but is otherwise a drop-in replacement. Testing this is hard, as most maths packages blow up as soon as their 80-bit floating-point capability is exceeded. With 128-bit tgammal(), this is easy to do, and this is the range that needs to be checked the most carefully. Using my copy of Maple, I was able to check that the output was withing a few ULP of the correct answer, right up to the point of 128-bit over- and underflow. Additionally, the results are no worse, and indeed better than the 80-bit version.