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[flang][runtime] Fix NORM2([negative, ...])

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NORM2 is broken for arrays that start with a negative number
because it sets the initial running max_ value to that number
rather than to its absolute value.

Differential Revision: https://reviews.llvm.org/D155976
This commit is contained in:
Peter Klausler 2023-07-20 13:50:10 -07:00
parent 863e8123df
commit b7585c75ee
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1 changed files with 1 additions and 1 deletions
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flang/runtime/extrema.cpp
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@ -800,7 +800,7 @@ public:
bool Accumulate(Type x) {
auto absX{std::abs(static_cast<AccumType>(x))};
if (!max_) {
max_ = x;
max_ = absX;
} else if (absX > max_) {
auto t{max_ / absX}; // < 1.0
auto tsq{t * t};