By calling the ISE of FFT IPcore implements the FFT computation, the input data through textio read a text file, after processing the data to read the text again.Due to the data accuracy, and MATLAB calculation result has certain error

fft ip core仿真.docx
FFT_Textio_Demo\FFT_Demo.lso
...............\FFT_Demo.prj
...............\FFT_Demo.stx
...............\FFT_Demo.vhd
...............\FFT_Demo.xst
...............\FFT_Demo_summary.html
...............\FFT_Texio_tb.fdo
...............\FFT_Texio_tb.udo
...............\FFT_Texio_tb.vhd
...............\FFT_Texio_tb.vhd.bak
...............\FFT_Texio_tb_wave.fdo
...............\FFT_Textio_Demo.gise
...............\FFT_Textio_Demo.xise
...............\inputData.txt
...............\.pcore_dir\coregen.cgp
...............\..........\coregen.log
...............\..........\create_FFT_IPCore.tcl
...............\..........\edit_FFT_IPCore.tcl
...............\..........\FFT_IPCore\doc\xfft_ds260.pdf
...............\..........\..........\...\xfft_v7_1_readme.txt
...............\..........\..........\...\xfft_v7_1_vinfo.html
...............\..........\FFT_IPCore.asy
...............\..........\FFT_IPCore.gise
...............\..........\FFT_IPCore.ngc
...............\..........\FFT_IPCore.sym
...............\..........\FFT_IPCore.vhd
...............\..........\FFT_IPCore.vho
...............\..........\FFT_IPCore.xco
...............\..........\FFT_IPCore.xise
...............\..........\FFT_IPCore_flist.txt
...............\..........\FFT_IPCore_xmdf.tcl
...............\..........\tmp\FFT_IPCore.lso
...............\..........\...\_cg\_dbg\xil_728.in
...............\..........\...\...\....\xil_728.out
...............\..........\...\.xmsgs\netgen.xmsgs
...............\..........\...\......\pn_parser.xmsgs
...............\..........\...\......\xst.xmsgs
...............\..........\_xmsgs\cg.xmsgs
...............\..........\......\pn_parser.xmsgs
...............\.seconfig\FFT_Demo.xreport
...............\.........\FFT_Textio_Demo.projectmgr
...............\modelsim.ini
...............\outputData.txt
...............\pepExtractor.prj
...............\transcript
...............\vsim.wlf
...............\wlft78g6km
...............\wlftas8fks
...............\wlftmc052c
...............\wlfttmdmfk
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