Rounding Issue

[GutHib]

Rounding Issue

[minopret]

Unless you employ something like String or github.com/dtrebbien/BigDecimal.js instead of a JavaScript number (IEEE 754 double-precision, 64 bits in total with 52 bits (=13 hex digits) for fractional part of the value), you'll have round-off. In particular when you want one cent and JavaScript stores the amount as 0.01 = (+2^-7)(1+(47ae147ae147ae1 base 16)/(16^15 - 1)), you're really storing the approximation (+2^-7)(1+(47ae147ae147a base 16)/16^13) = 0.0099999999999999984734433411404097569175064563751220703125

[GutHib]

Thanks for the explanation. I'm now rounding the results in javascript (easy enough, even for me ;).