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e38f230827
Undo the 80-bit "stub" implementation of the 128-bit long double tgammal(3) function. The latest (as of Feb 2024) version of the src/contrib/arm-optimised-routines library includes a standalone, full 128-bit replacement. This needs a small bit of 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. Steve Kargl sent me his libm testing code, which I used to verify that the excpetions for certain key values were correct. Tested in this case were +-Inf, +-NaN, +-1 and +-0. Differential Revision: https://reviews.freebsd.org/D44168 Reviewed by: theraven, andrew, imp |
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| ld80 | ||
| ld128 | ||
| man | ||
| powerpc | ||
| riscv | ||
| src | ||
| tests | ||
| x86 | ||
| Makefile | ||
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| Symbol.map | ||