[libc-commits] [libc] 1f2a3bf - [libc]: implement 'iswalnum' entrypoint (#185581)
via libc-commits
libc-commits at lists.llvm.org
Thu Mar 12 07:02:33 PDT 2026
Author: Mir Immad
Date: 2026-03-12T07:02:28-07:00
New Revision: 1f2a3bfd403bb3ead447946b09b5da7408fdf501
URL: https://github.com/llvm/llvm-project/commit/1f2a3bfd403bb3ead447946b09b5da7408fdf501
DIFF: https://github.com/llvm/llvm-project/commit/1f2a3bfd403bb3ead447946b09b5da7408fdf501.diff
LOG: [libc]: implement 'iswalnum' entrypoint (#185581)
- Added entry points for `iswalnum` for the following platforms:
- baremetal/arm
- baremetal/riscv
- dawin/aarch64
- linux/x86_64
- linux/arm
- linux/aarch64
- linux/riscv
- windows
- Added a unit test for `iswalnum`
part of #185136
Added:
libc/src/wctype/iswalnum.cpp
libc/src/wctype/iswalnum.h
libc/test/src/wctype/iswalnum_test.cpp
Modified:
libc/config/baremetal/arm/entrypoints.txt
libc/config/baremetal/riscv/entrypoints.txt
libc/config/darwin/aarch64/entrypoints.txt
libc/config/linux/aarch64/entrypoints.txt
libc/config/linux/arm/entrypoints.txt
libc/config/linux/riscv/entrypoints.txt
libc/config/linux/x86_64/entrypoints.txt
libc/config/windows/entrypoints.txt
libc/include/wctype.yaml
libc/src/wctype/CMakeLists.txt
libc/test/src/wctype/CMakeLists.txt
Removed:
################################################################################
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index f352e8df52590..7a7d78d283184 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -302,6 +302,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 6011b67975c6a..73235b0a33b00 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -299,6 +299,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index 7fe6d1b21dd81..04b2de76aa5b4 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -105,6 +105,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index 658015cbefae9..1e8826b9498c1 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -372,6 +372,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 92ffe7e8d0bd5..e7764ad3c0a06 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -197,6 +197,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 689f7384776d5..a202b41030bd9 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -376,6 +376,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 939b64797b7f5..0c9f4aec0ae05 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -421,6 +421,7 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
+ libc.src.wctype.iswalnum
libc.src.wctype.iswlower
libc.src.wctype.iswspace
libc.src.wctype.iswblank
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index 28608e8c327d1..accd2b9a1333c 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -108,6 +108,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswalnum
libc.src.wctype.iswgraph
libc.src.wctype.iswcntrl
libc.src.wctype.iswlower
diff --git a/libc/include/wctype.yaml b/libc/include/wctype.yaml
index b55288271ace6..be01dd2215374 100644
--- a/libc/include/wctype.yaml
+++ b/libc/include/wctype.yaml
@@ -44,3 +44,9 @@ functions:
return_type: int
arguments:
- type: wint_t
+ - name: iswalnum
+ standards:
+ - stdc
+ return_type: int
+ arguments:
+ - type: wint_t
diff --git a/libc/src/wctype/CMakeLists.txt b/libc/src/wctype/CMakeLists.txt
index 7e40ef4269062..47d87d620c026 100644
--- a/libc/src/wctype/CMakeLists.txt
+++ b/libc/src/wctype/CMakeLists.txt
@@ -26,7 +26,18 @@ add_entrypoint_object(
HDRS
iswdigit.h
DEPENDS
- libc.src.__support.wctype_utils
+ libc.src.__support.wctype_utils
+)
+
+add_entrypoint_object(
+ iswalnum
+ SRCS
+ iswalnum.cpp
+ HDRS
+ iswalnum.h
+ DEPENDS
+ libc.src.__support.wctype_utils
+ libc.hdr.types.wint_t
)
add_entrypoint_object(
diff --git a/libc/src/wctype/iswalnum.cpp b/libc/src/wctype/iswalnum.cpp
new file mode 100644
index 0000000000000..a9ada6bd65481
--- /dev/null
+++ b/libc/src/wctype/iswalnum.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of iswalnum ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+/**/
+#include "src/wctype/iswalnum.h"
+#include "src/__support/common.h"
+#include "src/__support/wctype_utils.h"
+
+#include "hdr/types/wint_t.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, iswalnum, (wint_t c)) {
+ return internal::isalnum(static_cast<wchar_t>(c));
+}
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/wctype/iswalnum.h b/libc/src/wctype/iswalnum.h
new file mode 100644
index 0000000000000..0f98189c6b5b1
--- /dev/null
+++ b/libc/src/wctype/iswalnum.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for iswalnum ----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_WCTYPE_ISWALNUM_H
+#define LLVM_LIBC_SRC_WCTYPE_ISWALNUM_H
+
+#include "hdr/types/wint_t.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int iswalnum(wint_t c);
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_WCTYPE_ISWALNUM_H
diff --git a/libc/test/src/wctype/CMakeLists.txt b/libc/test/src/wctype/CMakeLists.txt
index 70ace3b225341..066ad7d79cdd5 100644
--- a/libc/test/src/wctype/CMakeLists.txt
+++ b/libc/test/src/wctype/CMakeLists.txt
@@ -81,3 +81,13 @@ add_libc_test(
DEPENDS
libc.src.wctype.iswxdigit
)
+
+add_libc_test(
+ iswalnum_test
+ SUITE
+ libc_wctype_unittests
+ SRCS
+ iswalnum_test.cpp
+ DEPENDS
+ libc.src.wctype.iswalnum
+)
diff --git a/libc/test/src/wctype/iswalnum_test.cpp b/libc/test/src/wctype/iswalnum_test.cpp
new file mode 100644
index 0000000000000..f258da57f452c
--- /dev/null
+++ b/libc/test/src/wctype/iswalnum_test.cpp
@@ -0,0 +1,24 @@
+//===-- Unittests for iswalnum --------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/wctype/iswalnum.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibciswalnum, SimpleTest) {
+ EXPECT_NE(LIBC_NAMESPACE::iswalnum('A'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswalnum('z'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswalnum('0'), 0);
+
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum(' '), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum('?'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum('\0'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum(-1), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum('a'), 1);
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum('Z'), 1);
+ EXPECT_EQ(LIBC_NAMESPACE::iswalnum('9'), 1);
+}
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