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cf39d3ef3b
Details: - Fixed a bug that manifested as improperly-computed 1-norm for vectors and matrices. This is one of the few operations in BLIS that does not have its own test module within the testsuite, hence why it went undetected for so long. The bad 1-norms were being used to normalize matrices in the testsuite after initialization, which led to some matrices containing a combination of "large" and "small" values. This tended to push the residuals computed after each test away from zero. In some cases, they were off *just* enough to the testsuite to label it a "failure". Many thanks to Jeff Hammond for reporting this bug. (Wonky details: the bug was due to improperly-defined level-0 scalar macros for abval2, an operation that computes the absolute square, or complex magnitude/modulus. Certain complex domain instances of abval2 were being incorrectly defined in terms of real-only solutions, leading to bad results. This level-0 operation forms the basis of norm1v/norm1m. absq2 was also affected, but almost nothing uses this operation.)