Re: Adjust how gen-auto-libm-tests handles before-rounding/after-rounding cases

[Andreas Jaeger <aj at suse dot com>]

On 02/21/2014 08:14 PM, Joseph S. Myers wrote:
> This patch changes gen-auto-libm-tests so that, when generating test
> results that depend on whether the architecture has before-rounding or
> after-rounding tininess detection, the :before-rounding or
> :after-rounding conditions go on the exception / errno flags
> generated, rather than generating two separate lines in
> auto-libm-test-out for e.g. flt-32:before-rounding and
> flt-32:after-rounding.  See the diffs to auto-libm-test-out included
> below for details.
> 
> The rationale for this is as follows.  It would be desirable for
> testing a libm function in all rounding modes to require just one
> function and array in libm-test.inc, not four (or five), with the
> array of test data including expected results for all rounding modes
> rather than separate arrays for each rounding mode that also need to
> repeat all the test inputs.  For gen-libm-test.pl to generate data for
> such an array from auto-libm-test-out, it would be helpful if each
> (format, test input) pair has exactly four lines in
> auto-libm-test-out, one for each rounding mode, rather than some
> rounding modes having just one line and some having two because the
> exceptions depend on tininess detection.

ok, thanks,

Andreas
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