uucore: format: Fix hexadecimal default format print #7631
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When '%A' format is specified, we also need to capitalize the `0x`, i.e. `0XEP-3`, not `0xEP-3`.
The default precision for float actually depends on the format. It's _usually_ 6, but it's architecture-specific for hexadecimal floats. Set the precision as an Option, so that: - We don't need to sprinkle `6` in callers - We can actually handle unspecified precision correctly in float printing (next change).
The default hex format, on x86(-64) prints 15 digits after the decimal point, _but_ also trims trailing zeros, so it's not just a simple default precision and a little bit of extra handling is required. Also add a bunch of tests. Fixes uutils#7364.
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Fix 2 more printing issues. For now, we print like GNU coreutils on x86-64 does. I plan to write up a bit more about float precision handling (and how we are different from GNU coreutils, not just in
printf, but also inseq), but I think I'll do that as a separate PR.uucore: format: Fix hexadecimal default format print
The default hex format, on x86(-64) prints 15 digits after the
decimal point, but also trims trailing zeros, so it's not just
a simple default precision and a little bit of extra handling is
required.
Also add a bunch of tests.
Fixes #7364.
uucore: format: Use Option for Float precision
The default precision for float actually depends on the format.
It's usually 6, but it's architecture-specific for hexadecimal
floats.
Set the precision as an Option, so that:
6in callersfloat printing (next change).
uucore: format: Fix hexadecimal uppercase print (again)
When '%A' format is specified, we also need to capitalize the
0x, i.e.0XEP-3, not0xEP-3.