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a07e041b1f
SCALV is used directly by BLAS, CBLAS and BLIS scal{v} APIs but
also within many other APIs to handle special cases. In general
it is preferred to use SETV when alpha=0, but BLAS and CBLAS
continue to multiple all vector element by alpha. This has
different behaviour for propagating NaNs or Infs.
Changes in this commit:
- Standardize early returns from SCALV reference and optimized
kernels.
- User supplied N<0 is handled at the top level API layer. Use
negative values of N in kernel calls to signify that SETV
should _not_ be used when alpha=0. This should only be
required in SCALV.
- Include serial threshold in zdscal (as in dscal) to reduce
overhead for small problem sizes.
- Code tidying to make different variants more consistent.
- More standardization of tests in SCALV gtestsuite programs.
- Remove scalv_extreme_cases.cpp as it is now redundant.
AMD-Internal: [CPUPL-4415]
Change-Id: I42e98875ceaea224cc98d0cdfe0133c9abc3edae