BUG: fix absolute() returning -NaN for +NaN on scalar path - #269
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mkl_umath_@TYPE@_absolute's scalar/small-array fallback usesin1 > 0 ? in1 : -in1, which flips the sign of+NaNsince NaNcomparisons are always false. Uses
fabs/fabsfinstead, whichclears the sign bit unconditionally. Same bug numpy fixed upstream
in dc478c58b9 (gh-31433).
How found
Test failures caught it when upgrading to intel numpy 2.5.3