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Billy Laws
fc680388e3
Both the default F80 softfloat wrappers (FXTRACT_SIG/FXTRACT_EXP) and the reduced-precision F64 dispatcher fell through to the generic exponent/significand extraction for Inf and NaN inputs, producing finite garbage. The F80 wrapper returns input unchanged in the significand slot and +Inf (or NaN) in the exponent slot; the F64 dispatcher detects the exponent-all-ones case and selects the proper Inf/NaN result before the existing zero-case fold.