Surprising result while transpiling C to Go

• goh3

  1 4 3.8 Go

  A native Go h3 port

> What an amazing tool that can completely change function names when it converts from C to Go.

How can one read the code of the benchmark, then switch into virulent sarcasm mode without trying to understand the code? And seeing "+1" comments without any effort to understand is also disheartening.

The blog post had a link about the Go helper functions the author used. It lands on https://github.com/akhenakh/goh3/blob/main/h3.go This shows that the `FromGeo()` function used by the Go benchmark is a helper that calls transpiled functions. The benchmark code itself was of course not transpiled, so the sarcasm was unneeded and wrong.

If anyone wants to dig in deeper, the C function `latLngToCell()` calls 2 functions, see https://github.com/uber/h3/blob/master/src/h3lib/lib/h3Index...

• h3

  21 4,588 7.1 C

  Hexagonal hierarchical geospatial indexing system

  

> What an amazing tool that can completely change function names when it converts from C to Go.

How can one read the code of the benchmark, then switch into virulent sarcasm mode without trying to understand the code? And seeing "+1" comments without any effort to understand is also disheartening.

The blog post had a link about the Go helper functions the author used. It lands on https://github.com/akhenakh/goh3/blob/main/h3.go This shows that the `FromGeo()` function used by the Go benchmark is a helper that calls transpiled functions. The benchmark code itself was of course not transpiled, so the sarcasm was unneeded and wrong.

If anyone wants to dig in deeper, the C function `latLngToCell()` calls 2 functions, see https://github.com/uber/h3/blob/master/src/h3lib/lib/h3Index...

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• router7

  5 2,652 4.2 Go

  router7 is a small home internet router completely written in Go. It is implemented as a gokrazy appliance.

  

• h3-bench

  1 2 2.6 Go

  Repo to bench different implementation of go h3

Author of the blog post here, thanks for all the nice comments, you are lovely :)

First I did not post it here, the intent was to promote ccgo to the Go community.

I did recreate geoToH3 using the transpiled code and it is outperforming the helper tool provided by the C version see https://github.com/akhenakh/h3-bench/blob/main/cmd/geoToH3/m....

I hoped it was clear in the blog post: this is a very specific case where I only needed to convert coordinates to h3 index, with this specific goal this transpiled version outperform the cgo version.

The comment "probably due to Go runtime scaling on multiple cores" was me still seeing very close performance with GOMAXPROCS set to 1, but observing the process behaving differently than the pure C version.

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