HDL Coder - reducing size of fixed-point variables
1 回表示 (過去 30 日間)
古いコメントを表示
When running HDL Coder a fixed-point version of my MATLAB-script is generated as 'example_fixpt.m'.
In this script the function 'fi' is applied to all variables, e.g.:
test=fi(pi, 1, 16, fm);
If I run 'whos' (in example_fixpt.m) I'm told the new variable (type 'embedded.fi') uses 428 bytes.
Can I somehow reduce the size of fixed-point variables?
Does this mean my VHDL-code will also make use of variables this big?
0 件のコメント
回答 (1 件)
Bharath Venkataraman
2019 年 7 月 9 日
The number of bytes taken to store the fixed-point variable in MATLAB does not determine the number of bits in HDL. te number of bits in HDL will be determined by the wordlength of the fi variable, so in your case, the HDL code will contain a signal of 16 bits.
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で FPGA, ASIC, and SoC Development についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!