llvm-project.git/libc/src/strings/strcasecmp_l.cpp, branch main Unnamed repository; edit this file 'description' to name the repository. [libc] Migrate ctype_utils to use char instead of int where applicable. (#166225) 2025-11-05T19:02:28+00:00 Alexey Samsonov vonosmas@gmail.com 2025-11-05T19:02:28+00:00 120689e46679c6db37cd9e839ec0721e80a22d4f Functions like isalpha / tolower can operate on chars internally. This allows us to get rid of unnecessary casts and open a way to creating wchar_t overloads with the same names (e.g. for isalpha), that would simplify templated code for conversion functions (see 315dfe5865962d8a3d60e21d1fffce5214fe54ef). Add the int->char converstion to public entrypoints implementation instead. We also need to introduce bounds check on the input argument values - these functions' behavior is unspecified if the argument is neither EOF nor fits in "unsigned char" range, but the tests we've had verified that they always return false for small negative values. To preserve this behavior, cover it explicitly. 
Functions like isalpha / tolower can operate on chars internally. This
allows us to get rid of unnecessary casts and open a way to creating
wchar_t overloads with the same names (e.g. for isalpha), that would
simplify templated code for conversion functions (see
315dfe5865962d8a3d60e21d1fffce5214fe54ef).

Add the int->char converstion to public entrypoints implementation
instead. We also need to introduce bounds check on the input argument
values - these functions' behavior is unspecified if the argument is
neither EOF nor fits in "unsigned char" range, but the tests we've had
verified that they always return false for small negative values. To
preserve this behavior, cover it explicitly.
 [libc] implement `strings/str{n}casecmp_l` (#130407) 2025-03-12T02:49:04+00:00 Connector Switch c8ef@outlook.com 2025-03-12T02:49:04+00:00 ab22f652a4dfcaf5b6884a85e498d7ca077937ca ref: https://pubs.opengroup.org/onlinepubs/9799919799/functions/strcasecmp_l.html This patch introduces the `strcasecmp_l` function. At present, the locale parameter is ignored, making it a stub implementation. This is consistent with how other locale-related functions, such as `islower_l`, are treated in our codebase as well as in [musl](https://github.com/bminor/musl/blob/master/src/string/strcasecmp.c) and [bionic](https://cs.android.com/android/platform/superproject/main/+/main:bionic/libc/bionic/strings_l.cpp). --------- Co-authored-by: Michael Jones <michaelrj@google.com> 
ref:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/strcasecmp_l.html

This patch introduces the `strcasecmp_l` function. At present, the
locale parameter is ignored, making it a stub implementation. This is
consistent with how other locale-related functions, such as `islower_l`,
are treated in our codebase as well as in
[musl](https://github.com/bminor/musl/blob/master/src/string/strcasecmp.c)
and
[bionic](https://cs.android.com/android/platform/superproject/main/+/main:bionic/libc/bionic/strings_l.cpp).

---------

Co-authored-by: Michael Jones <michaelrj@google.com>