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From: | Paolo Bonzini |
Subject: | Re: [PATCH v3 10/19] qlit: Support all types of QNums |
Date: | Tue, 24 Nov 2020 11:56:13 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 |
On 24/11/20 10:55, Markus Armbruster wrote:
+ /* Larger than UINT64_MAX: */ + QLIT_QNUM_DOUBLE(18446744073709552e3), + /* Smaller than INT64_MIN: */ + QLIT_QNUM_DOUBLE(-92233720368547758e2),Why "larger than UINT64_MAX" and "smaller than INT64_MIN"?
I guess the point is to test values that are only representable as a double, so (double)((uint64_t)INT64_MAX+1) wouldn't be very useful for that: as the expression shows, it would not be a QNUM_VAL_INT but it would be representable as QNUM_VAL_UINT.
So these are the cases that matter the most, even though -1, 0 and INT64_MAX+1 could be nice to have.
Paolo
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