[libc-commits] [libc] 375357e - [libc] implement iswcntrl entrypoint (#185273)
via libc-commits
libc-commits at lists.llvm.org
Tue Mar 10 08:29:51 PDT 2026
Author: valium007
Date: 2026-03-10T08:29:44-07:00
New Revision: 375357eeaf38602079bcbd39c699eddf0a223d7a
URL: https://github.com/llvm/llvm-project/commit/375357eeaf38602079bcbd39c699eddf0a223d7a
DIFF: https://github.com/llvm/llvm-project/commit/375357eeaf38602079bcbd39c699eddf0a223d7a.diff
LOG: [libc] implement iswcntrl entrypoint (#185273)
Implement iswcntrl entrypoint and test for #185136
Added:
libc/src/wctype/iswcntrl.cpp
libc/src/wctype/iswcntrl.h
libc/test/src/wctype/iswcntrl_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 5fead3c443507..9a6b9cbf3daef 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -299,6 +299,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 3ce4724ea25f9..1e297d14cae20 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -296,6 +296,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index aeaa60b085171..ced8d1fef0109 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -102,6 +102,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
)
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index e641f39223d62..92210a72ee754 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -369,6 +369,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 915b421d3366b..6ee0ebf2b412d 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -194,6 +194,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
)
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index de82f1ee72cfa..878f8d42d6d7c 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -373,6 +373,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 7cd7b50eb48a8..f26b818466240 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -418,6 +418,7 @@ set(TARGET_LIBC_ENTRYPOINTS
# wctype.h entrypoints
libc.src.wctype.iswalpha
+ libc.src.wctype.iswcntrl
libc.src.wctype.iswdigit
libc.src.wctype.iswlower
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index 635ab3e7bb217..fc2f3dbe7765f 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.iswcntrl
libc.src.wctype.iswlower
)
diff --git a/libc/include/wctype.yaml b/libc/include/wctype.yaml
index 0c68d369e2bc3..9a12f59c3243a 100644
--- a/libc/include/wctype.yaml
+++ b/libc/include/wctype.yaml
@@ -8,6 +8,12 @@ functions:
return_type: int
arguments:
- type: wint_t
+ - name: iswcntrl
+ standards:
+ - stdc
+ return_type: int
+ arguments:
+ - type: wint_t
- name: iswlower
standards:
- stdc
diff --git a/libc/src/wctype/CMakeLists.txt b/libc/src/wctype/CMakeLists.txt
index dc185404f98e9..c7c65ca43b48e 100644
--- a/libc/src/wctype/CMakeLists.txt
+++ b/libc/src/wctype/CMakeLists.txt
@@ -8,6 +8,17 @@ add_entrypoint_object(
libc.src.__support.wctype_utils
)
+add_entrypoint_object(
+ iswcntrl
+ SRCS
+ iswcntrl.cpp
+ HDRS
+ iswcntrl.h
+ DEPENDS
+ libc.src.__support.wctype_utils
+ libc.hdr.types.wint_t
+)
+
add_entrypoint_object(
iswdigit
SRCS
diff --git a/libc/src/wctype/iswcntrl.cpp b/libc/src/wctype/iswcntrl.cpp
new file mode 100644
index 0000000000000..dbf0b0f841cc2
--- /dev/null
+++ b/libc/src/wctype/iswcntrl.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of iswcntrl ----------------------------------------===//
+//
+// 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/iswcntrl.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, iswcntrl, (wint_t c)) {
+ return internal::iscntrl(static_cast<wchar_t>(c));
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/wctype/iswcntrl.h b/libc/src/wctype/iswcntrl.h
new file mode 100644
index 0000000000000..fd9c6732005da
--- /dev/null
+++ b/libc/src/wctype/iswcntrl.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for iswcntrl ----------------------*- 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_ISWCNTRL_H
+#define LLVM_LIBC_SRC_WCTYPE_ISWCNTRL_H
+
+#include "hdr/types/wint_t.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int iswcntrl(wint_t c);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_WCTYPE_ISWCNTRL_H
diff --git a/libc/test/src/wctype/CMakeLists.txt b/libc/test/src/wctype/CMakeLists.txt
index cd9247e6b53cf..060d1b4744e7b 100644
--- a/libc/test/src/wctype/CMakeLists.txt
+++ b/libc/test/src/wctype/CMakeLists.txt
@@ -23,6 +23,16 @@ add_libc_test(
)
add_libc_test(
+ iswcntrl_test
+ SUITE
+ libc_wctype_unittests
+ SRCS
+ iswcntrl_test.cpp
+ DEPENDS
+ libc.src.wctype.iswcntrl
+)
+
+add_libc_test(
iswlower_test
SUITE
libc_wctype_unittests
diff --git a/libc/test/src/wctype/iswcntrl_test.cpp b/libc/test/src/wctype/iswcntrl_test.cpp
new file mode 100644
index 0000000000000..2b12c19c0f60b
--- /dev/null
+++ b/libc/test/src/wctype/iswcntrl_test.cpp
@@ -0,0 +1,31 @@
+//===-- Unittests for iswcntrl --------------------------------------------===//
+//
+// 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/iswcntrl.h"
+
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibciswcntrl, DefaultLocale) {
+ EXPECT_NE(LIBC_NAMESPACE::iswcntrl(L'\0'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswcntrl(L'\t'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswcntrl(L'\n'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswcntrl(L'\v'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswcntrl(L'\f'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswcntrl(L'\r'), 0);
+
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L' '), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'!'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'0'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'9'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'A'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'Z'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'a'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'z'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'?'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswcntrl(L'~'), 0);
+}
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