[libc-commits] [libc] [libc] Implement iswspace entrypoint (PR #185269)
Jiří Filek via libc-commits
libc-commits at lists.llvm.org
Sun Mar 8 03:16:11 PDT 2026
https://github.com/fileho created https://github.com/llvm/llvm-project/pull/185269
Part of #185136
>From 4feca7ca3766c89fb62e692803d180ed59d0c9d7 Mon Sep 17 00:00:00 2001
From: Jiri Filek <jiri.filek at gmail.com>
Date: Sun, 8 Mar 2026 11:09:38 +0100
Subject: [PATCH] [libc] Implement iswspace entrypoint
---
libc/config/baremetal/arm/entrypoints.txt | 1 +
libc/config/baremetal/riscv/entrypoints.txt | 1 +
libc/config/darwin/aarch64/entrypoints.txt | 1 +
libc/config/linux/aarch64/entrypoints.txt | 1 +
libc/config/linux/arm/entrypoints.txt | 1 +
libc/config/linux/riscv/entrypoints.txt | 1 +
libc/config/linux/x86_64/entrypoints.txt | 1 +
libc/config/windows/entrypoints.txt | 1 +
libc/include/wctype.yaml | 6 +++++
libc/src/wctype/CMakeLists.txt | 10 ++++++++
libc/src/wctype/iswspace.cpp | 19 +++++++++++++++
libc/src/wctype/iswspace.h | 21 +++++++++++++++++
libc/test/src/wctype/CMakeLists.txt | 11 +++++++++
libc/test/src/wctype/iswspace_test.cpp | 26 +++++++++++++++++++++
14 files changed, 101 insertions(+)
create mode 100644 libc/src/wctype/iswspace.cpp
create mode 100644 libc/src/wctype/iswspace.h
create mode 100644 libc/test/src/wctype/iswspace_test.cpp
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index 7bc92e84b7fa4..21a4e15f117d7 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.iswspace
# internal entrypoints
libc.startup.baremetal.init
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 29be47dfbfd53..2ee3d67977a1c 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.iswspace
# internal entrypoints
libc.startup.baremetal.init
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index b4a1ee70764cb..f8b1f091dbba3 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.iswspace
)
if(LLVM_LIBC_FULL_BUILD)
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index 960958b7cf90a..77b13c5654694 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.iswspace
# sys/uio.h entrypoints
libc.src.sys.uio.writev
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index e76bf81670ce5..3d26562a54b78 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.iswspace
)
if(LLVM_LIBC_FULL_BUILD)
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index a69d1a1b0a642..b6b2e64ce2cf7 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.iswspace
# sys/uio.h entrypoints
libc.src.sys.uio.writev
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 4103ee0331a23..f2c774299da43 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.iswspace
# sys/uio.h entrypoints
libc.src.sys.uio.writev
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index f777fc6c94bc2..cfdc84f1353fd 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.iswspace
)
set(TARGET_LIBM_ENTRYPOINTS
diff --git a/libc/include/wctype.yaml b/libc/include/wctype.yaml
index fb4f96f7d17e4..062badb6e93ec 100644
--- a/libc/include/wctype.yaml
+++ b/libc/include/wctype.yaml
@@ -8,3 +8,9 @@ functions:
return_type: int
arguments:
- type: wint_t
+ - name: iswspace
+ standards:
+ - stdc
+ return_type: int
+ arguments:
+ - type: wint_t
diff --git a/libc/src/wctype/CMakeLists.txt b/libc/src/wctype/CMakeLists.txt
index 3ac5eaef8ed8b..545f01a58f9b8 100644
--- a/libc/src/wctype/CMakeLists.txt
+++ b/libc/src/wctype/CMakeLists.txt
@@ -7,3 +7,13 @@ add_entrypoint_object(
DEPENDS
libc.src.__support.wctype_utils
)
+
+add_entrypoint_object(
+ iswspace
+ SRCS
+ iswspace.cpp
+ HDRS
+ iswspace.h
+ DEPENDS
+ libc.src.__support.wctype_utils
+)
diff --git a/libc/src/wctype/iswspace.cpp b/libc/src/wctype/iswspace.cpp
new file mode 100644
index 0000000000000..0ecdd50fa80e2
--- /dev/null
+++ b/libc/src/wctype/iswspace.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of iswspace ----------------------------------------===//
+//
+// 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/iswspace.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, iswspace, (wint_t c)) {
+ return internal::isspace(static_cast<wchar_t>(c));
+}
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/wctype/iswspace.h b/libc/src/wctype/iswspace.h
new file mode 100644
index 0000000000000..236e58645da30
--- /dev/null
+++ b/libc/src/wctype/iswspace.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for iswspace ----------------------*- 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_ISWSPACE_H
+#define LLVM_LIBC_SRC_WCTYPE_ISWSPACE_H
+
+#include "hdr/types/wint_t.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int iswspace(wint_t c);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_WCTYPE_ISWSPACE_H
diff --git a/libc/test/src/wctype/CMakeLists.txt b/libc/test/src/wctype/CMakeLists.txt
index 5459cdb4a9b71..208038952f61d 100644
--- a/libc/test/src/wctype/CMakeLists.txt
+++ b/libc/test/src/wctype/CMakeLists.txt
@@ -9,3 +9,14 @@ add_libc_test(
DEPENDS
libc.src.wctype.iswalpha
)
+
+add_libc_test(
+ iswspace_test
+ SUITE
+ libc_wctype_unittests
+ SRCS
+ iswspace_test.cpp
+ DEPENDS
+ libc.src.wctype.iswspace
+)
+
diff --git a/libc/test/src/wctype/iswspace_test.cpp b/libc/test/src/wctype/iswspace_test.cpp
new file mode 100644
index 0000000000000..61a1566ffbf86
--- /dev/null
+++ b/libc/test/src/wctype/iswspace_test.cpp
@@ -0,0 +1,26 @@
+//===-- Unittests for iswspace --------------------------------------------===//
+//
+// 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/iswspace.h"
+
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibciswspace, SimpleTest) {
+ EXPECT_NE(LIBC_NAMESPACE::iswspace(' '), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswspace('\t'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswspace('\n'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswspace('\v'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswspace('\f'), 0);
+ EXPECT_NE(LIBC_NAMESPACE::iswspace('\r'), 0);
+
+ EXPECT_EQ(LIBC_NAMESPACE::iswspace('a'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswspace('3'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswspace('?'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswspace('\0'), 0);
+ EXPECT_EQ(LIBC_NAMESPACE::iswspace(-1), 0);
+}
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