llvm-project.git/libc/src/strings/strncasecmp.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] move bcmp, bzero, bcopy, index, rindex, strcasecmp, strncasecmp to strings.h (#118899) 2024-12-10T16:58:45+00:00 Nick Desaulniers nickdesaulniers@users.noreply.github.com 2024-12-10T16:58:45+00:00 431ea2d076f8a5ca35b2c293dd5d62f5ce083f45 docgen relies on the convention that we have a file foo.cpp in libc/src/\<header\>/. Because the above functions weren't in libc/src/strings/ but rather libc/src/string/, docgen could not find that we had implemented these. Rather than add special carve outs to docgen, let's fix up our sources for these 7 functions to stick with the existing conventions the rest of the codebase follows. Link: #118860 Fixes: #118875 
docgen relies on the convention that we have a file foo.cpp in
libc/src/\<header\>/. Because the above functions weren't in libc/src/strings/
but rather libc/src/string/, docgen could not find that we had implemented
these.

Rather than add special carve outs to docgen, let's fix up our sources for
these 7 functions to stick with the existing conventions the rest of the
codebase follows.

Link: #118860
Fixes: #118875