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| author | Markus Armbruster <armbru@redhat.com> | 2020-12-10 17:14:50 +0100 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-12-19 10:37:16 +0100 |
| commit | 54addb01d8c2511ef96b0f0ca6b695d120dd8363 (patch) | |
| tree | a8ac70074b5c5c0d8729898f309ef0cc20d73339 /python | |
| parent | 7b205a7373c25db2f3680dee5a8c82e038135ec1 (diff) | |
| download | focaccia-qemu-54addb01d8c2511ef96b0f0ca6b695d120dd8363.tar.gz focaccia-qemu-54addb01d8c2511ef96b0f0ca6b695d120dd8363.zip | |
string-output-visitor: Fix to use sufficient precision
The string output visitor should serialize numbers so that the string input visitor deserializes them back to the same number. It fails to do so. print_type_number() uses format %f. This is prone to nasty rounding errors. For instance, numbers between 0 and 0.0000005 get flushed to zero. We currently use this visitor only for HMP info migrate, info network, info qtree, and info memdev. No double values occur there as far as I can tell. Fix anyway by formatting with %.17g. 17 decimal digits always suffice for IEEE double. See also recent commit "qobject: Fix qnum_to_string() to use sufficient precision". Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201210161452.2813491-9-armbru@redhat.com>
Diffstat (limited to 'python')
0 files changed, 0 insertions, 0 deletions