msun: fix behaviour of nextafter*() and nexttoward*() for MAX valueHEADmain

For an edge case at an extreme, e.g., nextafter(-DBL_MAX,-INFINITY)
do not return x+x.  Instead, evaluate x+x and assign it to a volatile
to raise an exception, and then fall through to return the correct
result in current rounding mode.

PR:		299389
MFC after:	6 days (for inclusion into releng/15.2)

0 files changed, 0 insertions, 0 deletions