felixwluo opened a new pull request, #46661:
URL: https://github.com/apache/doris/pull/46661
### What problem does this PR solve?
Issue Number: close #46619
Root Cause:
```
1. Unnecessary floating-point number conversions in coordinate handling:
1.1 converting double to string using absl::StrFormat
1.2 converting string back to double using std::stod
each conversion caused precision loss.
2. Byte order handling issue in WKB parsing:
2.1 using machine endian before properly reading WKB byte order flag
2.2 this caused incorrect interpretation of coordinate values
```
Solution:
```
1. Remove unnecessary coordinate value conversions:
1.1 directly use S2LatLng's degrees() value without string formatting
1.2 increase output precision in print_s2point to 15 digits
2. Fix WKB byte order handling:
2.1 read byte order flag first
2.2 set correct byte order before parsing coordinates
```
Result:
before:
```
POINT (1.461652102e-231 3.34424828009e-59)
```
after:
```
POINT(117.194767000297 36.46326301008)
```
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [x] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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