[libc-commits] [libc] [libc] implement stdc_leading_ones (C23) (PR #80082)
via libc-commits
libc-commits at lists.llvm.org
Tue Jan 30 16:01:29 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-libc
Author: Nick Desaulniers (nickdesaulniers)
<details>
<summary>Changes</summary>
- [libc] implement stdc_leading_ones (C23)
- [libc][test][stdbit] fix dependencies
---
Patch is 23.55 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/80082.diff
21 Files Affected:
- (modified) libc/config/linux/x86_64/entrypoints.txt (+5)
- (modified) libc/include/llvm-libc-macros/stdbit-macros.h (+22)
- (modified) libc/spec/stdc.td (+6-1)
- (modified) libc/src/stdbit/CMakeLists.txt (+50)
- (added) libc/src/stdbit/stdc_leading_ones_uc.cpp (+20)
- (added) libc/src/stdbit/stdc_leading_ones_uc.h (+18)
- (added) libc/src/stdbit/stdc_leading_ones_ui.cpp (+20)
- (added) libc/src/stdbit/stdc_leading_ones_ui.h (+18)
- (added) libc/src/stdbit/stdc_leading_ones_ul.cpp (+20)
- (added) libc/src/stdbit/stdc_leading_ones_ul.h (+18)
- (added) libc/src/stdbit/stdc_leading_ones_ull.cpp (+21)
- (added) libc/src/stdbit/stdc_leading_ones_ull.h (+18)
- (added) libc/src/stdbit/stdc_leading_ones_us.cpp (+21)
- (added) libc/src/stdbit/stdc_leading_ones_us.h (+18)
- (modified) libc/test/include/stdbit_test.cpp (+16-1)
- (modified) libc/test/src/stdbit/CMakeLists.txt (+61)
- (added) libc/test/src/stdbit/stdc_leading_ones_uc_test.cpp (+22)
- (added) libc/test/src/stdbit/stdc_leading_ones_ui_test.cpp (+22)
- (added) libc/test/src/stdbit/stdc_leading_ones_ul_test.cpp (+22)
- (added) libc/test/src/stdbit/stdc_leading_ones_ull_test.cpp (+22)
- (added) libc/test/src/stdbit/stdc_leading_ones_us_test.cpp (+22)
``````````diff
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index c3aa7e72ebce2..9946b93c346ce 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -97,6 +97,11 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.stdbit.stdc_leading_zeros_ui
libc.src.stdbit.stdc_leading_zeros_ul
libc.src.stdbit.stdc_leading_zeros_ull
+ libc.src.stdbit.stdc_leading_ones_uc
+ libc.src.stdbit.stdc_leading_ones_us
+ libc.src.stdbit.stdc_leading_ones_ui
+ libc.src.stdbit.stdc_leading_ones_ul
+ libc.src.stdbit.stdc_leading_ones_ull
# stdlib.h entrypoints
libc.src.stdlib.abs
diff --git a/libc/include/llvm-libc-macros/stdbit-macros.h b/libc/include/llvm-libc-macros/stdbit-macros.h
index da0fb1a578f13..5355be2832fbb 100644
--- a/libc/include/llvm-libc-macros/stdbit-macros.h
+++ b/libc/include/llvm-libc-macros/stdbit-macros.h
@@ -25,6 +25,21 @@ inline unsigned long stdc_leading_zeros(unsigned long x) {
inline unsigned long long stdc_leading_zeros(unsigned long long x) {
return stdc_leading_zeros_ull(x);
}
+inline unsigned char stdc_leading_ones(unsigned char x) {
+ return stdc_leading_ones_uc(x);
+}
+inline unsigned short stdc_leading_ones(unsigned short x) {
+ return stdc_leading_ones_us(x);
+}
+inline unsigned stdc_leading_ones(unsigned x) {
+ return stdc_leading_ones_ui(x);
+}
+inline unsigned long stdc_leading_ones(unsigned long x) {
+ return stdc_leading_ones_ul(x);
+}
+inline unsigned long long stdc_leading_ones(unsigned long long x) {
+ return stdc_leading_ones_ull(x);
+}
#else
#define stdc_leading_zeros(x) \
_Generic((x), \
@@ -33,6 +48,13 @@ inline unsigned long long stdc_leading_zeros(unsigned long long x) {
unsigned: stdc_leading_zeros_ui, \
unsigned long: stdc_leading_zeros_ul, \
unsigned long long: stdc_leading_zeros_ull)(x)
+#define stdc_leading_ones(x) \
+ _Generic((x), \
+ unsigned char: stdc_leading_ones_uc, \
+ unsigned short: stdc_leading_ones_us, \
+ unsigned: stdc_leading_ones_ui, \
+ unsigned long: stdc_leading_ones_ul, \
+ unsigned long long: stdc_leading_ones_ull)(x)
#endif // __cplusplus
#endif // __LLVM_LIBC_MACROS_STDBIT_MACROS_H
diff --git a/libc/spec/stdc.td b/libc/spec/stdc.td
index b21f620d0766a..cb23a6700d913 100644
--- a/libc/spec/stdc.td
+++ b/libc/spec/stdc.td
@@ -779,7 +779,12 @@ def StdC : StandardSpec<"stdc"> {
FunctionSpec<"stdc_leading_zeros_us", RetValSpec<UnsignedShortType>, [ArgSpec<UnsignedShortType>]>,
FunctionSpec<"stdc_leading_zeros_ui", RetValSpec<UnsignedIntType>, [ArgSpec<UnsignedIntType>]>,
FunctionSpec<"stdc_leading_zeros_ul", RetValSpec<UnsignedLongType>, [ArgSpec<UnsignedLongType>]>,
- FunctionSpec<"stdc_leading_zeros_ull", RetValSpec<UnsignedLongLongType>, [ArgSpec<UnsignedLongLongType>]>
+ FunctionSpec<"stdc_leading_zeros_ull", RetValSpec<UnsignedLongLongType>, [ArgSpec<UnsignedLongLongType>]>,
+ FunctionSpec<"stdc_leading_ones_uc", RetValSpec<UnsignedCharType>, [ArgSpec<UnsignedCharType>]>,
+ FunctionSpec<"stdc_leading_ones_us", RetValSpec<UnsignedShortType>, [ArgSpec<UnsignedShortType>]>,
+ FunctionSpec<"stdc_leading_ones_ui", RetValSpec<UnsignedIntType>, [ArgSpec<UnsignedIntType>]>,
+ FunctionSpec<"stdc_leading_ones_ul", RetValSpec<UnsignedLongType>, [ArgSpec<UnsignedLongType>]>,
+ FunctionSpec<"stdc_leading_ones_ull", RetValSpec<UnsignedLongLongType>, [ArgSpec<UnsignedLongLongType>]>
] // Functions
>;
diff --git a/libc/src/stdbit/CMakeLists.txt b/libc/src/stdbit/CMakeLists.txt
index d72bf8bc42dec..d7daff44dfda6 100644
--- a/libc/src/stdbit/CMakeLists.txt
+++ b/libc/src/stdbit/CMakeLists.txt
@@ -47,3 +47,53 @@ add_entrypoint_object(
DEPENDS
libc.src.__support.CPP.bit
)
+
+add_entrypoint_object(
+ stdc_leading_ones_uc
+ SRCS
+ stdc_leading_ones_uc.cpp
+ HDRS
+ stdc_leading_ones_uc.h
+ DEPENDS
+ libc.src.__support.CPP.bit
+)
+
+add_entrypoint_object(
+ stdc_leading_ones_us
+ SRCS
+ stdc_leading_ones_us.cpp
+ HDRS
+ stdc_leading_ones_us.h
+ DEPENDS
+ libc.src.__support.CPP.bit
+)
+
+add_entrypoint_object(
+ stdc_leading_ones_ui
+ SRCS
+ stdc_leading_ones_ui.cpp
+ HDRS
+ stdc_leading_ones_ui.h
+ DEPENDS
+ libc.src.__support.CPP.bit
+)
+
+add_entrypoint_object(
+ stdc_leading_ones_ul
+ SRCS
+ stdc_leading_ones_ul.cpp
+ HDRS
+ stdc_leading_ones_ul.h
+ DEPENDS
+ libc.src.__support.CPP.bit
+)
+
+add_entrypoint_object(
+ stdc_leading_ones_ull
+ SRCS
+ stdc_leading_ones_ull.cpp
+ HDRS
+ stdc_leading_ones_ull.h
+ DEPENDS
+ libc.src.__support.CPP.bit
+)
diff --git a/libc/src/stdbit/stdc_leading_ones_uc.cpp b/libc/src/stdbit/stdc_leading_ones_uc.cpp
new file mode 100644
index 0000000000000..beae134eeb91a
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_uc.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_leading_ones_uc ----------------------------===//
+//
+// 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/stdbit/stdc_leading_ones_uc.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned char, stdc_leading_ones_uc, (unsigned char value)) {
+ return static_cast<unsigned char>(cpp::countl_one(value));
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_leading_ones_uc.h b/libc/src/stdbit/stdc_leading_ones_uc.h
new file mode 100644
index 0000000000000..8303f3f7bd26e
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_uc.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_leading_ones_uc ----------*- 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_STDBIT_STDC_LEADING_ONES_UC_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_UC_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned char stdc_leading_ones_uc(unsigned char value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_UC_H
diff --git a/libc/src/stdbit/stdc_leading_ones_ui.cpp b/libc/src/stdbit/stdc_leading_ones_ui.cpp
new file mode 100644
index 0000000000000..ca378d0371b26
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_ui.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_leading_ones_ui ----------------------------===//
+//
+// 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/stdbit/stdc_leading_ones_ui.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned, stdc_leading_ones_ui, (unsigned value)) {
+ return cpp::countl_one(value);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_leading_ones_ui.h b/libc/src/stdbit/stdc_leading_ones_ui.h
new file mode 100644
index 0000000000000..527567a4776e9
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_ui.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_leading_ones_ui ----------*- 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_STDBIT_STDC_LEADING_ONES_UI_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_UI_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned stdc_leading_ones_ui(unsigned value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_Ui_H
diff --git a/libc/src/stdbit/stdc_leading_ones_ul.cpp b/libc/src/stdbit/stdc_leading_ones_ul.cpp
new file mode 100644
index 0000000000000..ccfd9b9594e0b
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_ul.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_leading_ones_ul ----------------------------===//
+//
+// 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/stdbit/stdc_leading_ones_ul.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned long, stdc_leading_ones_ul, (unsigned long value)) {
+ return static_cast<unsigned long>(cpp::countl_one(value));
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_leading_ones_ul.h b/libc/src/stdbit/stdc_leading_ones_ul.h
new file mode 100644
index 0000000000000..7643bd1ba81d9
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_ul.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_leading_ones_ul ----------*- 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_STDBIT_STDC_LEADING_ONES_UL_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_UL_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned long stdc_leading_ones_ul(unsigned long value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_UL_H
diff --git a/libc/src/stdbit/stdc_leading_ones_ull.cpp b/libc/src/stdbit/stdc_leading_ones_ull.cpp
new file mode 100644
index 0000000000000..8cb1ff08c7b00
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_ull.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of stdc_leading_ones_ull ---------------------------===//
+//
+// 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/stdbit/stdc_leading_ones_ull.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned long long, stdc_leading_ones_ull,
+ (unsigned long long value)) {
+ return static_cast<unsigned long long>(cpp::countl_one(value));
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_leading_ones_ull.h b/libc/src/stdbit/stdc_leading_ones_ull.h
new file mode 100644
index 0000000000000..8ae8145109671
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_ull.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_leading_ones_ull ---------*- 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_STDBIT_STDC_LEADING_ONES_ULL_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_ULL_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned long long stdc_leading_ones_ull(unsigned long long value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_ULL_H
diff --git a/libc/src/stdbit/stdc_leading_ones_us.cpp b/libc/src/stdbit/stdc_leading_ones_us.cpp
new file mode 100644
index 0000000000000..4b58cf5cee433
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_us.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of stdc_leading_ones_us ----------------------------===//
+//
+// 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/stdbit/stdc_leading_ones_us.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned short, stdc_leading_ones_us,
+ (unsigned short value)) {
+ return static_cast<unsigned short>(cpp::countl_one(value));
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_leading_ones_us.h b/libc/src/stdbit/stdc_leading_ones_us.h
new file mode 100644
index 0000000000000..5d1cb3b4680d0
--- /dev/null
+++ b/libc/src/stdbit/stdc_leading_ones_us.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_leading_ones_uc ----------*- 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_STDBIT_STDC_LEADING_ONES_US_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_US_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned short stdc_leading_ones_us(unsigned short value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_LEADING_ONES_US_H
diff --git a/libc/test/include/stdbit_test.cpp b/libc/test/include/stdbit_test.cpp
index d20005cc31afa..61e241c8f68a9 100644
--- a/libc/test/include/stdbit_test.cpp
+++ b/libc/test/include/stdbit_test.cpp
@@ -23,8 +23,13 @@ unsigned short stdc_leading_zeros_us(unsigned short) { return 0xAB; }
unsigned stdc_leading_zeros_ui(unsigned) { return 0xAC; }
unsigned long stdc_leading_zeros_ul(unsigned long) { return 0xAD; }
unsigned long long stdc_leading_zeros_ull(unsigned long long) { return 0xAF; }
+unsigned char stdc_leading_ones_uc(unsigned char) { return 0xBA; }
+unsigned short stdc_leading_ones_us(unsigned short) { return 0xBB; }
+unsigned stdc_leading_ones_ui(unsigned) { return 0xBC; }
+unsigned long stdc_leading_ones_ul(unsigned long) { return 0xBD; }
+unsigned long long stdc_leading_ones_ull(unsigned long long) { return 0xBF; }
-TEST(LlvmLibcStdbitTest, TypeGenericMacro) {
+TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingZeros) {
EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned char>(0U)),
static_cast<unsigned char>(0xAA));
EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned short>(0U)),
@@ -33,3 +38,13 @@ TEST(LlvmLibcStdbitTest, TypeGenericMacro) {
EXPECT_EQ(stdc_leading_zeros(0UL), static_cast<unsigned long>(0xAD));
EXPECT_EQ(stdc_leading_zeros(0ULL), static_cast<unsigned long long>(0xAF));
}
+
+TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingOnes) {
+ EXPECT_EQ(stdc_leading_ones(static_cast<unsigned char>(0U)),
+ static_cast<unsigned char>(0xBA));
+ EXPECT_EQ(stdc_leading_ones(static_cast<unsigned short>(0U)),
+ static_cast<unsigned short>(0xBB));
+ EXPECT_EQ(stdc_leading_ones(0U), static_cast<unsigned>(0xBC));
+ EXPECT_EQ(stdc_leading_ones(0UL), static_cast<unsigned long>(0xBD));
+ EXPECT_EQ(stdc_leading_ones(0ULL), static_cast<unsigned long long>(0xBF));
+}
diff --git a/libc/test/src/stdbit/CMakeLists.txt b/libc/test/src/stdbit/CMakeLists.txt
index 73b32e4ec0cae..a8c3c9f883532 100644
--- a/libc/test/src/stdbit/CMakeLists.txt
+++ b/libc/test/src/stdbit/CMakeLists.txt
@@ -7,6 +7,7 @@ add_libc_test(
SRCS
stdc_leading_zeros_uc_test.cpp
DEPENDS
+ libc.src.__support.CPP.limits
libc.src.stdbit.stdc_leading_zeros_uc
)
@@ -17,6 +18,7 @@ add_libc_test(
SRCS
stdc_leading_zeros_us_test.cpp
DEPENDS
+ libc.src.__support.CPP.limits
libc.src.stdbit.stdc_leading_zeros_us
)
@@ -27,6 +29,7 @@ add_libc_test(
SRCS
stdc_leading_zeros_ui_test.cpp
DEPENDS
+ libc.src.__support.CPP.limits
libc.src.stdbit.stdc_leading_zeros_ui
)
@@ -37,6 +40,7 @@ add_libc_test(
SRCS
stdc_leading_zeros_ul_test.cpp
DEPENDS
+ libc.src.__support.CPP.limits
libc.src.stdbit.stdc_leading_zeros_ul
)
@@ -47,5 +51,62 @@ add_libc_test(
SRCS
stdc_leading_zeros_ull_test.cpp
DEPENDS
+ libc.src.__support.CPP.limits
libc.src.stdbit.stdc_leading_zeros_ull
)
+
+add_libc_test(
+ stdc_leading_ones_uc_test
+ SUITE
+ libc-stdbit-tests
+ SRCS
+ stdc_leading_ones_uc_test.cpp
+ DEPENDS
+ libc.src.__support.CPP.limits
+ libc.src.stdbit.stdc_leading_ones_uc
+)
+
+add_libc_test(
+ stdc_leading_ones_us_test
+ SUITE
+ libc-stdbit-tests
+ SRCS
+ stdc_leading_ones_us_test.cpp
+ DEPENDS
+ libc.src.__support.CPP.limits
+ libc.src.stdbit.stdc_leading_ones_us
+)
+
+add_libc_test(
+ stdc_leading_ones_ui_test
+ SUITE
+ libc-stdbit-tests
+ SRCS
+ stdc_leading_ones_ui_test.cpp
+ DEPENDS
+ libc.src.__support.CPP.limits
+ libc.src.stdbit.stdc_leading_ones_ui
+)
+
+add_libc_test(
+ stdc_leading_ones_ul_test
+ SUITE
+ libc-stdbit-tests
+ SRCS
+ stdc_leading_ones_ul_test.cpp
+ DEPENDS
+ libc.src.__support.CPP.limits
+ libc.src.stdbit.stdc_leading_ones_ul
+)
+
+add_libc_test(
+ stdc_leading_ones_ull_test
+ SUITE
+ libc-stdbit-tests
+ SRCS
+ stdc_leading_ones_ull_test.cpp
+ DEPENDS
+ libc.src.__support.CPP.limits
+ libc.src.stdbit.stdc_leading_ones_ull
+)
+
diff --git a/libc/test/src/stdbit/stdc_leading_ones_uc_test.cpp b/libc/test/src/stdbit/stdc_leading_ones_uc_test.cpp
new file mode 100644
index 0000000000000..2883065df3771
--- /dev/null
+++ b/libc/test/src/stdbit/stdc_leading_ones_uc_test.cpp
@@ -0,0 +1,22 @@
+//===-- Unittests for stdc_leading_ones_uc --------------------------------===//
+//
+// 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/__support/CPP/limits.h"
+#include "src/stdbit/stdc_leading_ones_uc.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcStdcLeadingOnesUcTest, All) {
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_uc(UCHAR_MAX),
+ static_cast<unsigned char>(UCHAR_WIDTH));
+}
+
+TEST(LlvmLibcStdcLeadingOnesUcTest, ZeroHot) {
+ for (unsigned i = 0U; i != UCHAR_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_uc(~(1U << i)),
+ static_cast<unsigned char>(UCHAR_WIDTH - i - 1));
+}
diff --git a/libc/test/src/stdbit/stdc_leading_ones_ui_test.cpp b/libc/test/src/stdbit/stdc_leading_ones_ui_test.cpp
new file mode 100644
index 0000000000000..bae00573927ac
--- /dev/null
+++ b/libc/test/src/stdbit/stdc_leading_ones_ui_test.cpp
@@ -0,0 +1,22 @@
+//===-- Unittests for stdc_leading_ones_ui --------------------------------===//
+//
+// 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/__support/CPP/limits.h"
+#include "src/stdbit/stdc_leading_ones_ui.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcStdcLeadingOnesUiTest, All) {
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ui(UINT_MAX),
+ static_cast<unsigned>(UINT_WIDTH));
+}
+
+TEST(LlvmLibcStdcLeadingOnesUiTest, ZeroHot) {
+ for (unsigned i = 0U...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/80082
More information about the libc-commits
mailing list