[CRC32_C] Compute result is negative value

[zjhiphop]

For example:

// for (0-100 hex)
let data = '0102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F6061626364';
let buf = Buffer.from(data, 'hex'); 
let crc = CRC.default("CRC32_C");
let computed_crc = crc.compute(source);
// output is: -5DA0519C

But for correct value should be 0xA25FAE64, you can test in website 'http://crccalc.com/' with the same data and 'hex' option selected.

Pls help to check it.

[suria22]

let computed_crc = crc.compute(source)>>>0;
Use the Zero fill right shift operator with zero shift. It will convert it to unsigned value.