[Bug math/17257] New: erf generates spurious underflow for long-double-128

[davem at davemloft dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=17257

            Bug ID: 17257
           Summary: erf generates spurious underflow for long-double-128
           Product: glibc
           Version: 2.20
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: davem at davemloft dot net

On sparc 32-bit and 64-bit, test-ldouble fails as follows:

Failure: erf (0x3.8b7f12369ded5518p-16384): Exception "Underflow" set
Failure: erf_downward (0x3.8b7f12369ded5518p-16384): Exception "Underflow" set
Failure: erf_towardzero (0x3.8b7f12369ded5518p-16384): Exception "Underflow"
set
Failure: erf_upward (0x3.8b7f12369ded5518p-16384): Exception "Underflow" set

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