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| author | Bernhard Schommer <bernhardschommer@gmail.com> | 2022-03-22 16:03:57 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2022-04-25 16:34:11 +0200 |
| commit | 967c04de6c02bef349df579cddbfcac8cf262e6d (patch) | |
| tree | 65be52a638e7f7ff559ea90a4111da0278b032bf /cfrontend | |
| parent | 9d3521b4db46773239a2c5f9f6970de826075508 (diff) | |
| download | compcert-967c04de6c02bef349df579cddbfcac8cf262e6d.tar.gz compcert-967c04de6c02bef349df579cddbfcac8cf262e6d.zip | |
Introduce float_conversion_default_nan parameter for float-float conversions
For RISC-V we need to return the canonical NaN value if the argument of
a float32->float64 or float64->float32 conversion is any NaN.
This is in line with 11.3 from the RISC-V manual, the description of
the conversion operations as well as what the spike ISA simulator and
qemu do.
Other platforms convert the NaN payload (by truncation or expansion)
in float32->float64 and float64->float32 conversions.
Fixes: #428
Diffstat (limited to 'cfrontend')
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