Critical updates for the LabWindows™/CVI™ 2015 SP1 and 2017 Development Environments have been released. The patches fix an issue that can arise when compiling in 64-bit release mode with the optimization level set to no optimizations. Specifically, casting a double to a float can result in unexpected results when compiled in this mode.
The patches are recommended for all users of LabWindows/CVI 2015 SP1 and 2017. The patches are available for download on ni.com/downloads and will be available using NI Update Service shortly. You can view the issues fixed with these updates at the following links:
Regards,
Ryan Curtis
Product Support Engineer
National Instruments