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[libc 1.0] Add htonl, htons, ntohl, ntohs #3669

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[libc 1.0] Add htonl, htons, ntohl, ntohs #3669

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4 changes: 4 additions & 0 deletions libc-test/semver/unix.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -583,6 +583,8 @@ grantpt
group
hostent
hstrerror
htonl
htons
if_indextoname
if_nametoindex
in6_addr
Expand Down Expand Up @@ -651,6 +653,8 @@ munmap
nanosleep
nfds_t
nlink_t
ntohl
ntohs
off_t
open
opendir
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17 changes: 17 additions & 0 deletions src/unix/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1367,6 +1367,23 @@ extern "C" {

}

safe_f! {
// It seems htonl, etc are macros on macOS. So we have to reimplement them. So let's
// reimplement them for all UNIX platforms
Comment on lines +1371 to +1372
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We could split the declaration for that target.

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We could split the declaration for that target

@JohnTitor , yes, we can. But I think this is slightly more error-prone than my approach. I. e. if we split the declaration, then it is possible we introduce bug for some platform, but not for others

pub {const} fn htonl(hostlong: u32) -> u32 {
u32::to_be(hostlong)
}
pub {const} fn htons(hostshort: u16) -> u16 {
u16::to_be(hostshort)
}
pub {const} fn ntohl(netlong: u32) -> u32 {
u32::from_be(netlong)
}
pub {const} fn ntohs(netshort: u16) -> u16 {
u16::from_be(netshort)
}
}

cfg_if! {
if #[cfg(not(any(target_os = "emscripten",
target_os = "android",
Expand Down