The function should return the same negative value as it is passed to it
Input passed: FormatNumber[enlist -0.331,15]
Output Should be as "-0.331"
but my Code output is "-1.699"
FormatNumber:{[col;DecimalPlaces]
Rows:count col;
$[DecimalPlaces<=4;afterDecimal:1_`string[floor "j"$(10 xexp DecimalPlaces)*col-floor col)%(10 xexp DecimalPlaces)];[fraction:col-floor col;
c:where string[col-floor col] like "*e*";
col[IndexWithNonZeroDigitAfterFouthDecimalPlace]:col[IndexWithNonZeroDigitAfterFouthDecimalPlace]-floor col[IndexWithNonZeroDigitAfterFouthDecimalPlace];
afterDecimal:2_`string[(floor "j"$(10 xexp DecimalPlaces)*fraction)%(10 xexp DecimalPlaces) ];
afterDecimal[IndexWithNonZeroDigitAfterFouthDecimalPlace]:"0",/:1_afterDecimal[IndexWithNonZeroDigitAfterFouthDecimalPlace];
];
PrecisionERR:0.000000000001;
Result:({:reverse "," sv 3 cut reverse string[x] each floor col+PrecisionERR),`".",/: ?[0=count each DecimalPoint:Rows#enlist[DecimalPlaces#"0"]; afterDecimal];
:?[DecimalPlaces>0;Result;ssr[;".";""]each Result]
};
The Above code doesnot work for negative value.
