[libc-commits] [libc] [libc][stdbit][c23] adds implementation of `stdc_bit_ceil` functions (PR #84657)
via libc-commits
libc-commits at lists.llvm.org
Sat Mar 9 15:26:56 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-libc
Author: Michael Flanders (Flandini)
<details>
<summary>Changes</summary>
Closes #<!-- -->84652.
Based on #<!-- -->84233.
---
Patch is 23.32 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/84657.diff
23 Files Affected:
- (modified) libc/config/linux/x86_64/entrypoints.txt (+5)
- (modified) libc/docs/stdbit.rst (+6-6)
- (modified) libc/include/llvm-libc-macros/stdbit-macros.h (+22)
- (modified) libc/spec/stdc.td (+8-2)
- (modified) libc/src/__support/CPP/bit.h (+1-1)
- (modified) libc/src/stdbit/CMakeLists.txt (+1)
- (added) libc/src/stdbit/stdc_bit_ceil_uc.cpp (+20)
- (added) libc/src/stdbit/stdc_bit_ceil_uc.h (+18)
- (added) libc/src/stdbit/stdc_bit_ceil_ui.cpp (+20)
- (added) libc/src/stdbit/stdc_bit_ceil_ui.h (+18)
- (added) libc/src/stdbit/stdc_bit_ceil_ul.cpp (+20)
- (added) libc/src/stdbit/stdc_bit_ceil_ul.h (+18)
- (added) libc/src/stdbit/stdc_bit_ceil_ull.cpp (+21)
- (added) libc/src/stdbit/stdc_bit_ceil_ull.h (+18)
- (added) libc/src/stdbit/stdc_bit_ceil_us.cpp (+20)
- (added) libc/src/stdbit/stdc_bit_ceil_us.h (+18)
- (modified) libc/test/include/stdbit_test.cpp (+17)
- (modified) libc/test/src/stdbit/CMakeLists.txt (+1)
- (added) libc/test/src/stdbit/stdc_bit_ceil_uc_test.cpp (+34)
- (added) libc/test/src/stdbit/stdc_bit_ceil_ui_test.cpp (+33)
- (added) libc/test/src/stdbit/stdc_bit_ceil_ul_test.cpp (+33)
- (added) libc/test/src/stdbit/stdc_bit_ceil_ull_test.cpp (+33)
- (added) libc/test/src/stdbit/stdc_bit_ceil_us_test.cpp (+34)
``````````diff
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 0880c372b37390..41b051ec914bfb 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -158,6 +158,11 @@ set(TARGET_LIBC_ENTRYPOINTS
libc.src.stdbit.stdc_bit_floor_ui
libc.src.stdbit.stdc_bit_floor_ul
libc.src.stdbit.stdc_bit_floor_ull
+ libc.src.stdbit.stdc_bit_ceil_uc
+ libc.src.stdbit.stdc_bit_ceil_us
+ libc.src.stdbit.stdc_bit_ceil_ui
+ libc.src.stdbit.stdc_bit_ceil_ul
+ libc.src.stdbit.stdc_bit_ceil_ull
# stdlib.h entrypoints
libc.src.stdlib.abs
diff --git a/libc/docs/stdbit.rst b/libc/docs/stdbit.rst
index 3ec46cf8d8ffa4..9b4974cf1479b1 100644
--- a/libc/docs/stdbit.rst
+++ b/libc/docs/stdbit.rst
@@ -96,11 +96,11 @@ stdc_bit_floor_us |check|
stdc_bit_floor_ui |check|
stdc_bit_floor_ul |check|
stdc_bit_floor_ull |check|
-stdc_bit_ceil_uc
-stdc_bit_ceil_us
-stdc_bit_ceil_ui
-stdc_bit_ceil_ul
-stdc_bit_ceil_ull
+stdc_bit_ceil_uc |check|
+stdc_bit_ceil_us |check|
+stdc_bit_ceil_ui |check|
+stdc_bit_ceil_ul |check|
+stdc_bit_ceil_ull |check|
============================ =========
@@ -127,7 +127,7 @@ stdc_count_ones |check|
stdc_has_single_bit |check|
stdc_bit_width |check|
stdc_bit_floor |check|
-stdc_bit_ceil
+stdc_bit_ceil |check|
========================= =========
Standards
diff --git a/libc/include/llvm-libc-macros/stdbit-macros.h b/libc/include/llvm-libc-macros/stdbit-macros.h
index 5b51068f866b71..50ce272860290f 100644
--- a/libc/include/llvm-libc-macros/stdbit-macros.h
+++ b/libc/include/llvm-libc-macros/stdbit-macros.h
@@ -194,6 +194,21 @@ inline unsigned long stdc_bit_floor(unsigned long x) {
inline unsigned long long stdc_bit_floor(unsigned long long x) {
return stdc_bit_floor_ull(x);
}
+inline unsigned char stdc_bit_ceil(unsigned char x) {
+ return stdc_bit_ceil_uc(x);
+}
+inline unsigned short stdc_bit_ceil(unsigned short x) {
+ return stdc_bit_ceil_us(x);
+}
+inline unsigned stdc_bit_ceil(unsigned x) {
+ return stdc_bit_ceil_ui(x);
+}
+inline unsigned long stdc_bit_ceil(unsigned long x) {
+ return stdc_bit_ceil_ul(x);
+}
+inline unsigned long long stdc_bit_ceil(unsigned long long x) {
+ return stdc_bit_ceil_ull(x);
+}
#else
#define stdc_leading_zeros(x) \
_Generic((x), \
@@ -286,6 +301,13 @@ inline unsigned long long stdc_bit_floor(unsigned long long x) {
unsigned: stdc_bit_floor_ui, \
unsigned long: stdc_bit_floor_ul, \
unsigned long long: stdc_bit_floor_ull)(x)
+#define stdc_bit_ceil(x)
+ _Generic((x), \
+ unsigned char: stdc_bit_ceil_ui, \
+ unsigned short: stdc_bit_ceil_us, \
+ unsigned: stdc_bit_ceil_ui, \
+ unsigned long: stdc_bit_ceil_ul, \
+ unsigned long long: stdc_bit_ceil_ull)(x)
#endif // __cplusplus
#endif // __LLVM_LIBC_MACROS_STDBIT_MACROS_H
diff --git a/libc/spec/stdc.td b/libc/spec/stdc.td
index cc845a93a3330b..b15857dfa8acf8 100644
--- a/libc/spec/stdc.td
+++ b/libc/spec/stdc.td
@@ -815,7 +815,8 @@ def StdC : StandardSpec<"stdc"> {
Macro<"stdc_count_ones">,
Macro<"stdc_has_single_bit">,
Macro<"std_bit_width">,
- Macro<"std_bit_floor">
+ Macro<"std_bit_floor">,
+ Macro<"std_bit_ceil">
], // Macros
[], // Types
[], // Enumerations
@@ -879,7 +880,12 @@ def StdC : StandardSpec<"stdc"> {
FunctionSpec<"stdc_bit_floor_us", RetValSpec<UnsignedShortType>, [ArgSpec<UnsignedShortType>]>,
FunctionSpec<"stdc_bit_floor_ui", RetValSpec<UnsignedIntType>, [ArgSpec<UnsignedIntType>]>,
FunctionSpec<"stdc_bit_floor_ul", RetValSpec<UnsignedLongType>, [ArgSpec<UnsignedLongType>]>,
- FunctionSpec<"stdc_bit_floor_ull", RetValSpec<UnsignedLongLongType>, [ArgSpec<UnsignedLongLongType>]>
+ FunctionSpec<"stdc_bit_floor_ull", RetValSpec<UnsignedLongLongType>, [ArgSpec<UnsignedLongLongType>]>,
+ FunctionSpec<"stdc_bit_ceil_uc", RetValSpec<UnsignedCharType>, [ArgSpec<UnsignedCharType>]>,
+ FunctionSpec<"stdc_bit_ceil_us", RetValSpec<UnsignedShortType>, [ArgSpec<UnsignedShortType>]>,
+ FunctionSpec<"stdc_bit_ceil_ui", RetValSpec<UnsignedIntType>, [ArgSpec<UnsignedIntType>]>,
+ FunctionSpec<"stdc_bit_ceil_ul", RetValSpec<UnsignedLongType>, [ArgSpec<UnsignedLongType>]>,
+ FunctionSpec<"stdc_bit_ceil_ull", RetValSpec<UnsignedLongLongType>, [ArgSpec<UnsignedLongLongType>]>
] // Functions
>;
diff --git a/libc/src/__support/CPP/bit.h b/libc/src/__support/CPP/bit.h
index 9c74a346949f0c..4464703e4b064e 100644
--- a/libc/src/__support/CPP/bit.h
+++ b/libc/src/__support/CPP/bit.h
@@ -193,7 +193,7 @@ template <typename T>
bit_ceil(T value) {
if (value < 2)
return 1;
- return T(1) << cpp::bit_width<T>(value - 1u);
+ return static_cast<T>(T(1) << cpp::bit_width<T>(value - 1u));
}
// Rotate algorithms make use of "Safe, Efficient, and Portable Rotate in C/C++"
diff --git a/libc/src/stdbit/CMakeLists.txt b/libc/src/stdbit/CMakeLists.txt
index 7ab4fee4454a15..2aef2029f2df0b 100644
--- a/libc/src/stdbit/CMakeLists.txt
+++ b/libc/src/stdbit/CMakeLists.txt
@@ -12,6 +12,7 @@ set(prefixes
has_single_bit
bit_width
bit_floor
+ bit_ceil
)
set(suffixes c s i l ll)
foreach(prefix IN LISTS prefixes)
diff --git a/libc/src/stdbit/stdc_bit_ceil_uc.cpp b/libc/src/stdbit/stdc_bit_ceil_uc.cpp
new file mode 100644
index 00000000000000..675ae4a0edb021
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_uc.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_bit_ceil_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_bit_ceil_uc.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned char, stdc_bit_ceil_uc, (unsigned char value)) {
+ return cpp::bit_ceil(value);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_bit_ceil_uc.h b/libc/src/stdbit/stdc_bit_ceil_uc.h
new file mode 100644
index 00000000000000..204261e4108121
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_uc.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_bit_ceil_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_BIT_CEIL_UC_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_UC_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned char stdc_bit_ceil_uc(unsigned char value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_UC_H
diff --git a/libc/src/stdbit/stdc_bit_ceil_ui.cpp b/libc/src/stdbit/stdc_bit_ceil_ui.cpp
new file mode 100644
index 00000000000000..a8ac9726179bc7
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_ui.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_bit_ceil_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_bit_ceil_ui.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned, stdc_bit_ceil_ui, (unsigned value)) {
+ return cpp::bit_ceil(value);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_bit_ceil_ui.h b/libc/src/stdbit/stdc_bit_ceil_ui.h
new file mode 100644
index 00000000000000..db66c336e36624
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_ui.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_bit_ceil_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_BIT_CEIL_UI_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_UI_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned stdc_bit_ceil_ui(unsigned value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_UI_H
diff --git a/libc/src/stdbit/stdc_bit_ceil_ul.cpp b/libc/src/stdbit/stdc_bit_ceil_ul.cpp
new file mode 100644
index 00000000000000..18a9c38b5b4cf6
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_ul.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_bit_ceil_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_bit_ceil_ul.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned long, stdc_bit_ceil_ul, (unsigned long value)) {
+ return cpp::bit_ceil(value);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_bit_ceil_ul.h b/libc/src/stdbit/stdc_bit_ceil_ul.h
new file mode 100644
index 00000000000000..f8393a42fcbfc1
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_ul.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_bit_ceil_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_BIT_CEIL_UL_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_UL_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned long stdc_bit_ceil_ul(unsigned long value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_UL_H
diff --git a/libc/src/stdbit/stdc_bit_ceil_ull.cpp b/libc/src/stdbit/stdc_bit_ceil_ull.cpp
new file mode 100644
index 00000000000000..8d97ba05c72ff1
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_ull.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of stdc_bit_ceil_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_bit_ceil_ull.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned long long, stdc_bit_ceil_ull,
+ (unsigned long long value)) {
+ return cpp::bit_ceil(value);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_bit_ceil_ull.h b/libc/src/stdbit/stdc_bit_ceil_ull.h
new file mode 100644
index 00000000000000..e65f537efb172f
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_ull.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_bit_ceil_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_BIT_CEIL_ULL_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_ULL_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned long long stdc_bit_ceil_ull(unsigned long long value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_ULL_H
diff --git a/libc/src/stdbit/stdc_bit_ceil_us.cpp b/libc/src/stdbit/stdc_bit_ceil_us.cpp
new file mode 100644
index 00000000000000..f86a216bb840e9
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_us.cpp
@@ -0,0 +1,20 @@
+//===-- Implementation of stdc_bit_ceil_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_bit_ceil_us.h"
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(unsigned short, stdc_bit_ceil_us, (unsigned short value)) {
+ return cpp::bit_ceil(value);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdbit/stdc_bit_ceil_us.h b/libc/src/stdbit/stdc_bit_ceil_us.h
new file mode 100644
index 00000000000000..16a14e51b74334
--- /dev/null
+++ b/libc/src/stdbit/stdc_bit_ceil_us.h
@@ -0,0 +1,18 @@
+//===-- Implementation header for stdc_bit_ceil_us --------------*- 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_BIT_CEIL_US_H
+#define LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_US_H
+
+namespace LIBC_NAMESPACE {
+
+unsigned short stdc_bit_ceil_us(unsigned short value);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDBIT_STDC_BIT_CEIL_US_H
diff --git a/libc/test/include/stdbit_test.cpp b/libc/test/include/stdbit_test.cpp
index 20820d52fbdede..6c12665c4454d0 100644
--- a/libc/test/include/stdbit_test.cpp
+++ b/libc/test/include/stdbit_test.cpp
@@ -98,6 +98,13 @@ unsigned long stdc_bit_floor_ul(unsigned long) noexcept { return 0x5DU; }
unsigned long long stdc_bit_floor_ull(unsigned long long) noexcept {
return 0x5EU;
}
+unsigned char stdc_bit_ceil_uc(unsigned char) noexcept { return 0x6AU; }
+unsigned short stdc_bit_ceil_us(unsigned short) noexcept { return 0x6BU; }
+unsigned stdc_bit_ceil_ui(unsigned) noexcept { return 0x6CU; }
+unsigned long stdc_bit_ceil_ul(unsigned long) noexcept { return 0x6DU; }
+unsigned long long stdc_bit_ceil_ull(unsigned long long) noexcept {
+ return 0x6EU;
+}
}
#include "include/llvm-libc-macros/stdbit-macros.h"
@@ -207,3 +214,13 @@ TEST(LlvmLibcStdbitTest, TypeGenericMacroBitFloor) {
EXPECT_EQ(stdc_bit_floor(0UL), 0x5DUL);
EXPECT_EQ(stdc_bit_floor(0ULL), 0x5EULL);
}
+
+TEST(LlvmLibcStdbitTest, TypeGenericMacroBitCeil) {
+ EXPECT_EQ(stdc_bit_ceil(static_cast<unsigned char>(0U)),
+ static_cast<unsigned char>(0x6AU));
+ EXPECT_EQ(stdc_bit_ceil(static_cast<unsigned short>(0U)),
+ static_cast<unsigned short>(0x6BU));
+ EXPECT_EQ(stdc_bit_ceil(0U), 0x6CU);
+ EXPECT_EQ(stdc_bit_ceil(0UL), 0x6DUL);
+ EXPECT_EQ(stdc_bit_ceil(0ULL), 0x6EULL);
+}
diff --git a/libc/test/src/stdbit/CMakeLists.txt b/libc/test/src/stdbit/CMakeLists.txt
index 3aed56c0e92380..c3f8059d2d9b2a 100644
--- a/libc/test/src/stdbit/CMakeLists.txt
+++ b/libc/test/src/stdbit/CMakeLists.txt
@@ -14,6 +14,7 @@ set(prefixes
has_single_bit
bit_width
bit_floor
+ bit_ceil
)
set(suffixes c s i l ll)
foreach(prefix IN LISTS prefixes)
diff --git a/libc/test/src/stdbit/stdc_bit_ceil_uc_test.cpp b/libc/test/src/stdbit/stdc_bit_ceil_uc_test.cpp
new file mode 100644
index 00000000000000..a6c62e0a5dd44e
--- /dev/null
+++ b/libc/test/src/stdbit/stdc_bit_ceil_uc_test.cpp
@@ -0,0 +1,34 @@
+//===-- Unittests for stdc_bit_ceil_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_bit_ceil_uc.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcStdcBitceilUcTest, Zero) {
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_uc(0U),
+ static_cast<unsigned char>(1));
+}
+
+TEST(LlvmLibcStdcBitceilUcTest, Ones) {
+ for (unsigned i = 0U; i != UCHAR_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_uc(1U << i),
+ static_cast<unsigned char>(1U << i));
+}
+
+TEST(LlvmLibcStdcBitceilUcTest, OneLessThanPowsTwo) {
+ for (unsigned i = 2U; i != UCHAR_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_uc((1U << i) - 1),
+ static_cast<unsigned char>(1U << i));
+}
+
+TEST(LlvmLibcStdcBitceilUcTest, OneMoreThanPowsTwo) {
+ for (unsigned i = 2U; i != UCHAR_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_uc((1U << i) + 1),
+ static_cast<unsigned char>(1U << (i + 1)));
+}
diff --git a/libc/test/src/stdbit/stdc_bit_ceil_ui_test.cpp b/libc/test/src/stdbit/stdc_bit_ceil_ui_test.cpp
new file mode 100644
index 00000000000000..82015a342aa9a0
--- /dev/null
+++ b/libc/test/src/stdbit/stdc_bit_ceil_ui_test.cpp
@@ -0,0 +1,33 @@
+//===-- Unittests for stdc_bit_ceil_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_bit_ceil_ui.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcStdcBitceilUiTest, Zero) {
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ui(0U), 1U);
+}
+
+TEST(LlvmLibcStdcBitceilUiTest, Ones) {
+ for (unsigned i = 0U; i != UINT_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ui(1U << i),
+ 1U << i);
+}
+
+TEST(LlvmLibcStdcBitceilUiTest, OneLessThanPowsTwo) {
+ for (unsigned i = 2U; i != UINT_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ui((1U << i) - 1),
+ 1U << i);
+}
+
+TEST(LlvmLibcStdcBitceilUiTest, OneMoreThanPowsTwo) {
+ for (unsigned i = 2U; i != UINT_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ui((1U << i) + 1),
+ 1U << (i + 1));
+}
diff --git a/libc/test/src/stdbit/stdc_bit_ceil_ul_test.cpp b/libc/test/src/stdbit/stdc_bit_ceil_ul_test.cpp
new file mode 100644
index 00000000000000..aa70596946e245
--- /dev/null
+++ b/libc/test/src/stdbit/stdc_bit_ceil_ul_test.cpp
@@ -0,0 +1,33 @@
+//===-- Unittests for stdc_bit_ceil_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/__support/CPP/limits.h"
+#include "src/stdbit/stdc_bit_ceil_ul.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcStdcBitceilUlTest, Zero) {
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ul(0UL), 1UL);
+}
+
+TEST(LlvmLibcStdcBitceilUlTest, Ones) {
+ for (unsigned i = 0U; i != ULONG_WIDTH; ++i)
+ EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ul(1UL << i),
+ 1UL << i);
+}
+
+TEST(...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/84657
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