C Arbitrary Precision Types - 2021.2 English

Vitis High-Level Synthesis User Guide (UG1399)

Document ID
UG1399
ft:locale
English (United States)
Release Date
2021-12-15
Version
2021.2 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 no longer supported.
  • Virtual functions are no longer supported.