Ap_uint with more than 1024 bits

[akboken]

Hi All,

According to HLS documentation, ap_uint<bit_width>, bit_width is 1024 bits at most. I need a design that gets 2048 bit input, and outputs these in 64-bit width chunks as below. However, currently, ap_uint does not support 2048 bit widths. What is the best way of doing this? 

top_level_example(ap_uint<2048>IN, ap_uint<32> out[64]) {

}

Thanks in advance. 

[hpoetzl · Accepted solution]

Hey @akboken

From UG902, the HLS User Guide ....

#define AP_INT_MAX_W 4096 // Must be defined before next line 
#include "ap_int.h" 

ap_int<4096> very_wide_var;

Hope this helps,

Herbert