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Fix a precision bug of valueToString, prevent to give an error result… (#1246)

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* Fix a precision bug of valueToString, prevent to give an error result on input of wanted precision 0 and a double value which end of zero before decimal point ,such as 1230.01,12300.1;
Add test cases for double valueToString with precision 0;

* Delete a test case with platform differences in the previous commit

* Fix clang-format.

* Fix clang-format!

Co-authored-by: lilei <dlilei@126.com>
This commit is contained in:
Lei
2020-12-16 03:08:05 +08:00
committed by GitHub
parent 8954092f0a
commit 940982438d
4 changed files with 44 additions and 8 deletions
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10
src/lib_json/json_tool.h
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@@ -116,14 +116,18 @@ template <typename Iter> void fixNumericLocaleInput(Iter begin, Iter end) {
* Return iterator that would be the new end of the range [begin,end), if we
* were to delete zeros in the end of string, but not the last zero before '.'.
*/
template <typename Iter> Iter fixZerosInTheEnd(Iter begin, Iter end) {
template <typename Iter>
Iter fixZerosInTheEnd(Iter begin, Iter end, unsigned int precision) {
for (; begin != end; --end) {
if (*(end - 1) != '0') {
return end;
}
// Don't delete the last zero before the decimal point.
if (begin != (end - 1) && *(end - 2) == '.') {
return end;
if (begin != (end - 1) && begin != (end - 2) && *(end - 2) == '.') {
if (precision) {
return end;
}
return end - 2;
}
}
return end;