Jeremy Kemp ce39ffdda7 Printf fixes for reference results #673 #675 (#680) ...

* Moved float tests that expect limits into their own sub-test.

These are harder to test generically on the CPU so have them be their own test which will retain hard-coded reference results.

* Remove unused variable.

* Switched reference result type from (char**) to (vector::const char*)

* printf: generate reference results where possible #673 #675

The reference results had two issues:
- They did not take into account the rounding mode of the device.
- Scientific notation results did not have trailing zero's, meaning that the exponent could be a single digit, despite the requirement being at least two digits.

This change introduces runtime generated reference results for types with numerical representations (float, int, hex, etc) where a direct mapping to standard C99 (sn)printf is possible to execute on the CPU.

* Trim leading zeroes from the exponent when verifying result #675.

There is no limit on how many leading zeros may be in the exponent, so strip them all.

* Switched to using get_default_rounding_mode.

2020-04-15 14:30:29 +01:00

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