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Fboemer/fix eval poly

Fabian Boemer requested to merge fboemer/fix-eval-poly into master

  • Fixes #172 (closed)

  • With WITH_NATIVEOPT=ON, clang and gcc had slightly different behavior for uint64_t scConstant = static_cast<uint64_t>(constant * scFactor + 0.5); For

scFactor 3.43597e+10
constant -0.75

gcc would return scConstant = 18446744047939747841, whereas clang would return 18446744073709551615.

Regardless, these are both the result of static_cast<uint64_t> on a negative double, which should be avoided.

Edited by Fabian Boemer

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