GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224

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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
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andishgar:ulp_distance

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Rationale for this change

Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.

What changes are included in this PR?

Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.

Are these changes tested?

Yes, I ran the relevant unit tests.

Are there any user-facing changes?

No.

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This is neat, thank you. A couple comments below, but looks good on the principle.

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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.

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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.

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Revision: 0597736

Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233

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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.

Mottl pushed a commit to Mottl/arrow that referenced this pull request May 26, 2026
@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
pitrou merged 3 commits into
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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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This is neat, thank you. A couple comments below, but looks good on the principle.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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Revision: 0597736
Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
Mottl pushed a commit
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May 26, 2026
@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
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pitrou merged 3 commits into
apache:mainfrom 
andishgar:ulp_distance
Dec 8, 2025
Merged
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
pitrou merged 3 commits into
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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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This is neat, thank you. A couple comments below, but looks good on the principle.
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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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Revision: 0597736
Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
Mottl pushed a commit
to Mottl/arrow
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@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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, 'i');
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
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pitrou merged 3 commits into
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andishgar:ulp_distance
Dec 8, 2025
Merged
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
pitrou merged 3 commits into
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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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This is neat, thank you. A couple comments below, but looks good on the principle.
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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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Revision: 0597736
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
Mottl pushed a commit
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@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
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pitrou merged 3 commits into
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andishgar:ulp_distance
Dec 8, 2025
Merged
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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This is neat, thank you. A couple comments below, but looks good on the principle.
Comment threadcpp/src/arrow/testing/math.cc
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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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Revision: 0597736
Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233
TaskStatus
example-cpp-minimal-build-staticGitHub Actions
example-cpp-minimal-build-static-system-dependencyGitHub Actions
example-cpp-tutorialGitHub Actions
test-build-cpp-fuzzGitHub Actions
test-conda-cppGitHub Actions
test-conda-cpp-valgrindGitHub Actions
test-cuda-cpp-ubuntu-22.04-cuda-11.7.1GitHub Actions
test-cuda-cpp-ubuntu-24.04-cuda-13.0.2GitHub Actions
test-debian-12-cpp-amd64GitHub Actions
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test-ubuntu-22.04-cpp-emscriptenGitHub Actions
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test-ubuntu-24.04-cppGitHub Actions
test-ubuntu-24.04-cpp-bundled-offlineGitHub Actions
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test-ubuntu-24.04-cpp-thread-sanitizerGitHub Actions
@pitrou
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merged commit f40d62e
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
Mottl pushed a commit
to Mottl/arrow
that referenced
this pull request
May 26, 2026
@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
Merged
pitrou merged 3 commits into
apache:mainfrom 
andishgar:ulp_distance
Dec 8, 2025
Merged
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
pitrou merged 3 commits into
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andishgar:ulp_distance
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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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⚠️ GitHub issue #48123has been automatically assigned in GitHub to PR creator.
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This is neat, thank you. A couple comments below, but looks good on the principle.
Comment threadcpp/src/arrow/testing/math.cc
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Comment threadcpp/src/arrow/testing/math.cc
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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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Revision: 0597736
Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233
TaskStatus
example-cpp-minimal-build-staticGitHub Actions
example-cpp-minimal-build-static-system-dependencyGitHub Actions
example-cpp-tutorialGitHub Actions
test-build-cpp-fuzzGitHub Actions
test-conda-cppGitHub Actions
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test-cuda-cpp-ubuntu-22.04-cuda-11.7.1GitHub Actions
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@pitrou
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
Mottl pushed a commit
to Mottl/arrow
that referenced
this pull request
May 26, 2026
@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
Merged
pitrou merged 3 commits into
apache:mainfrom 
andishgar:ulp_distance
Dec 8, 2025
Merged
GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
pitrou merged 3 commits into
apache:mainfrom 
andishgar:ulp_distance
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Nov 22, 2025•

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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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⚠️ GitHub issue #48123has been automatically assigned in GitHub to PR creator.
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This is neat, thank you. A couple comments below, but looks good on the principle.
Comment threadcpp/src/arrow/testing/math.cc
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Comment threadcpp/src/arrow/testing/math.cc
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Comment threadcpp/src/arrow/testing/math.cc
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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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Revision: 0597736
Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233
TaskStatus
example-cpp-minimal-build-staticGitHub Actions
example-cpp-minimal-build-static-system-dependencyGitHub Actions
example-cpp-tutorialGitHub Actions
test-build-cpp-fuzzGitHub Actions
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
Mottl pushed a commit
to Mottl/arrow
that referenced
this pull request
May 26, 2026
@andishgar@pitrou@Mottl
apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16 - #48224
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pitrou merged 3 commits into
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andishgar:ulp_distance
Dec 8, 2025
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GH-48123 [C++][Float16] Reimplement arrow::WithinUlp and Enable it for float16#48224
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Nov 22, 2025•

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Rationale for this change
Refer to this comment. Additionally, this change enables arrow::WithinUlp for float16.
What changes are included in this PR?
Re-implement arrow::WithinUlp and enable it for float16, including relevant tests for corner cases around powers of two and Float16.
Are these changes tested?
Yes, I ran the relevant unit tests.
Are there any user-facing changes?
No.
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⚠️ GitHub issue #48123has been automatically assigned in GitHub to PR creator.
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This is neat, thank you. A couple comments below, but looks good on the principle.
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@pitrou Thank you for the review. I’ve checked all the comments and will apply your suggestions in the coming days.
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LGTM, thank you @andishgar ! I've just pushed a very minor change and will merge if CI is ok.
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@github-actions crossbow submit -g cpp
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Revision: 0597736
Submitted crossbow builds: ursacomputing/crossbow @ actions-aeed0cd233
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit f40d62e.
There were no benchmark performance regressions. 🎉
The full Conbench report has more details. It also includes information about 16 possible false positives for unstable benchmarks that are known to sometimes produce them.
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apacheGH-48123[C++][Float16] Reimplement arrow::WithinUlp and Enable…
ba76a43
… it for float16 (apache#48224)
### Rationale for this change
Refer to [this comment](apache#48123 (comment)). Additionally, this change enables `arrow::WithinUlp` for `float16`.
### What changes are included in this PR?
Re-implement `arrow::WithinUlp` and enable it for `float16`, including relevant tests for corner cases around powers of two and `Float16`.
### Are these changes tested?
Yes, I ran the relevant unit tests.
### Are there any user-facing changes?
No.
* GitHub Issue: apache#48123
Lead-authored-by: arash andishgar <arashandishgar1@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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