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[Bug math/16561] Bad overflowing y0/y1/yn results for directed rounding


https://sourceware.org/bugzilla/show_bug.cgi?id=16561

--- Comment #2 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
same in extended precision:

Testing function y17 for exponent 0 [seed=16203].
 rounding mode MPFR_RNDU:
      wrong overflow for x=8.0000000000000000@-4112
      library gives -@Inf@
      mpfr    gives -f.fffffffffffffff0@4095

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