C Arbitrary Precision Types - 2022.1 English

Vitis High-Level Synthesis User Guide (UG1399)

Document ID
UG1399
Release Date
2022-06-07
Version
2022.1 English

Vitis HLS does not support C arbitrary precision types. Xilinx recommends using C++ types with arbitrary precision.

In addition, C++ arbitrary precision types in Vitis HLS are limited to a maximum width of 4096 bits, instead of 32K bits supported by Vivado HLS.

C Constructs

  • Pointer cast are not supported.
  • Virtual functions are not supported.