Fix is_signed detection for ap_int and ap_uint types

Xilinx / finn

Dataflow compiler for QNN inference on FPGAs

https://xilinx.github.io/finn

BSD 3-Clause "New" or "Revised" License

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Closed STFleming closed 2 months ago

STFleming commented 2 months ago

Previously this was always saying that all ap_int types were unsigned which was causing some issues for some of the tests. This PR fixes this.