C Arbitrary Precision Types - 2024.1 English

Vitis High-Level Synthesis User Guide (UG1399)

Document ID
UG1399
Release Date
2024-05-30
Version
2024.1 English

Vitis HLS does not support C arbitrary precision types. AMD 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.