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mirror of https://github.com/antonblanchard/microwatt.git synced 2026-01-11 23:43:15 +00:00
Paul Mackerras 59992eab90 FPU: Avoid doing overflow processing twice in OE=1 case
Split the ROUND_OFLOW state into two, one which handles the OE=0 case
(disabled overflow exception) and one which handles the OE=1 case
(enabled overflow exception).  This avoids a loop in the state diagram
and prevents us from adding the exponent bias twice.

Also correct a bug in ROUNDING_3 state where for single-precision
operations which yield a result which is denormal in double-precision
format, r.shift was set wrongly.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2025-12-15 08:45:23 +11:00
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