diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt index cd44b5c52b58cd..f328b96e92e83d 100644 --- a/libc/config/linux/x86_64/entrypoints.txt +++ b/libc/config/linux/x86_64/entrypoints.txt @@ -142,6 +142,11 @@ set(TARGET_LIBC_ENTRYPOINTS libc.src.stdbit.stdc_count_ones_ui libc.src.stdbit.stdc_count_ones_ul libc.src.stdbit.stdc_count_ones_ull + libc.src.stdbit.stdc_has_single_bit_uc + libc.src.stdbit.stdc_has_single_bit_us + libc.src.stdbit.stdc_has_single_bit_ui + libc.src.stdbit.stdc_has_single_bit_ul + libc.src.stdbit.stdc_has_single_bit_ull # stdlib.h entrypoints libc.src.stdlib.abs diff --git a/libc/docs/stdbit.rst b/libc/docs/stdbit.rst index 0308caeb929321..b579e9dbbc2f51 100644 --- a/libc/docs/stdbit.rst +++ b/libc/docs/stdbit.rst @@ -81,11 +81,11 @@ stdc_count_ones_us |check| stdc_count_ones_ui |check| stdc_count_ones_ul |check| stdc_count_ones_ull |check| -stdc_has_single_bit_uc -stdc_has_single_bit_us -stdc_has_single_bit_ui -stdc_has_single_bit_ul -stdc_has_single_bit_ull +stdc_has_single_bit_uc |check| +stdc_has_single_bit_us |check| +stdc_has_single_bit_ui |check| +stdc_has_single_bit_ul |check| +stdc_has_single_bit_ull |check| stdc_bit_width_uc stdc_bit_width_us stdc_bit_width_ui @@ -124,7 +124,7 @@ stdc_first_trailing_zero |check| stdc_first_trailing_one |check| stdc_count_zeros |check| stdc_count_ones |check| -stdc_has_single_bit +stdc_has_single_bit |check| stdc_bit_width stdc_bit_floor stdc_bit_ceil diff --git a/libc/include/llvm-libc-macros/stdbit-macros.h b/libc/include/llvm-libc-macros/stdbit-macros.h index 5ee152e105f772..e3a36d10ed92ab 100644 --- a/libc/include/llvm-libc-macros/stdbit-macros.h +++ b/libc/include/llvm-libc-macros/stdbit-macros.h @@ -157,6 +157,21 @@ inline unsigned stdc_count_ones(unsigned long x) { inline unsigned stdc_count_ones(unsigned long long x) { return stdc_count_ones_ull(x); } +inline bool stdc_has_single_bit(unsigned char x) { + return stdc_has_single_bit_uc(x); +} +inline bool stdc_has_single_bit(unsigned short x) { + return stdc_has_single_bit_us(x); +} +inline bool stdc_has_single_bit(unsigned x) { + return stdc_has_single_bit_ui(x); +} +inline bool stdc_has_single_bit(unsigned long x) { + return stdc_has_single_bit_ul(x); +} +inline bool stdc_has_single_bit(unsigned long long x) { + return stdc_has_single_bit_ull(x); +} #else #define stdc_leading_zeros(x) \ _Generic((x), \ @@ -228,6 +243,13 @@ inline unsigned stdc_count_ones(unsigned long long x) { unsigned: stdc_count_ones_ui, \ unsigned long: stdc_count_ones_ul, \ unsigned long long: stdc_count_ones_ull)(x) +#define stdc_has_single_bit(x) \ + _Generic((x), \ + unsigned char: stdc_has_single_bit_uc, \ + unsigned short: stdc_has_single_bit_us, \ + unsigned: stdc_has_single_bit_ui, \ + unsigned long: stdc_has_single_bit_ul, \ + unsigned long long: stdc_has_single_bit_ull)(x) #endif // __cplusplus #endif // __LLVM_LIBC_MACROS_STDBIT_MACROS_H diff --git a/libc/spec/spec.td b/libc/spec/spec.td index 90c076580be125..998f37fb26deed 100644 --- a/libc/spec/spec.td +++ b/libc/spec/spec.td @@ -51,6 +51,7 @@ def LongDoubleType : NamedType<"long double">; def CharType : NamedType<"char">; def UnsignedCharType : NamedType<"unsigned char">; def UnsignedShortType : NamedType<"unsigned short">; +def BoolType : NamedType<"bool">; def Float128Type : NamedType<"float128">; diff --git a/libc/spec/stdc.td b/libc/spec/stdc.td index 6b292588b6c7ae..63e9a178dec1c4 100644 --- a/libc/spec/stdc.td +++ b/libc/spec/stdc.td @@ -792,7 +792,8 @@ def StdC : StandardSpec<"stdc"> { Macro<"stdc_first_trailing_zero">, Macro<"stdc_first_trailing_one">, Macro<"stdc_count_zeros">, - Macro<"stdc_count_ones"> + Macro<"stdc_count_ones">, + Macro<"stdc_has_single_bit"> ], // Macros [], // Types [], // Enumerations @@ -841,7 +842,12 @@ def StdC : StandardSpec<"stdc"> { FunctionSpec<"stdc_count_ones_us", RetValSpec, [ArgSpec]>, FunctionSpec<"stdc_count_ones_ui", RetValSpec, [ArgSpec]>, FunctionSpec<"stdc_count_ones_ul", RetValSpec, [ArgSpec]>, - FunctionSpec<"stdc_count_ones_ull", RetValSpec, [ArgSpec]> + FunctionSpec<"stdc_count_ones_ull", RetValSpec, [ArgSpec]>, + FunctionSpec<"stdc_has_single_bit_uc", RetValSpec, [ArgSpec]>, + FunctionSpec<"stdc_has_single_bit_us", RetValSpec, [ArgSpec]>, + FunctionSpec<"stdc_has_single_bit_ui", RetValSpec, [ArgSpec]>, + FunctionSpec<"stdc_has_single_bit_ul", RetValSpec, [ArgSpec]>, + FunctionSpec<"stdc_has_single_bit_ull", RetValSpec, [ArgSpec]> ] // Functions >; diff --git a/libc/src/stdbit/CMakeLists.txt b/libc/src/stdbit/CMakeLists.txt index 5fb77d21e57a13..8bc7dd7852bbca 100644 --- a/libc/src/stdbit/CMakeLists.txt +++ b/libc/src/stdbit/CMakeLists.txt @@ -9,6 +9,7 @@ set(prefixes first_trailing_one count_zeros count_ones + has_single_bit ) set(suffixes c s i l ll) foreach(prefix IN LISTS prefixes) diff --git a/libc/src/stdbit/stdc_has_single_bit_uc.cpp b/libc/src/stdbit/stdc_has_single_bit_uc.cpp new file mode 100644 index 00000000000000..e5acdc2a71b4bc --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_uc.cpp @@ -0,0 +1,20 @@ +//===-- Implementation of stdc_has_single_bit_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_has_single_bit_uc.h" + +#include "src/__support/CPP/bit.h" +#include "src/__support/common.h" + +namespace LIBC_NAMESPACE { + +LLVM_LIBC_FUNCTION(bool, stdc_has_single_bit_uc, (unsigned char value)) { + return cpp::has_single_bit(value); +} + +} // namespace LIBC_NAMESPACE diff --git a/libc/src/stdbit/stdc_has_single_bit_uc.h b/libc/src/stdbit/stdc_has_single_bit_uc.h new file mode 100644 index 00000000000000..028d4ee710505a --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_uc.h @@ -0,0 +1,18 @@ +//===-- Implementation header for stdc_has_single_bit_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_HAS_SINGLE_BIT_UC_H +#define LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_UC_H + +namespace LIBC_NAMESPACE { + +bool stdc_has_single_bit_uc(unsigned char value); + +} // namespace LIBC_NAMESPACE + +#endif // LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_UC_H diff --git a/libc/src/stdbit/stdc_has_single_bit_ui.cpp b/libc/src/stdbit/stdc_has_single_bit_ui.cpp new file mode 100644 index 00000000000000..37578882324aa6 --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_ui.cpp @@ -0,0 +1,20 @@ +//===-- Implementation of stdc_has_single_bit_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_has_single_bit_ui.h" + +#include "src/__support/CPP/bit.h" +#include "src/__support/common.h" + +namespace LIBC_NAMESPACE { + +LLVM_LIBC_FUNCTION(bool, stdc_has_single_bit_ui, (unsigned value)) { + return cpp::has_single_bit(value); +} + +} // namespace LIBC_NAMESPACE diff --git a/libc/src/stdbit/stdc_has_single_bit_ui.h b/libc/src/stdbit/stdc_has_single_bit_ui.h new file mode 100644 index 00000000000000..1e8cd9afaee885 --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_ui.h @@ -0,0 +1,18 @@ +//===-- Implementation header for stdc_has_single_bit_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_HAS_SINGLE_BIT_UI_H +#define LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_UI_H + +namespace LIBC_NAMESPACE { + +bool stdc_has_single_bit_ui(unsigned value); + +} // namespace LIBC_NAMESPACE + +#endif // LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_UI_H diff --git a/libc/src/stdbit/stdc_has_single_bit_ul.cpp b/libc/src/stdbit/stdc_has_single_bit_ul.cpp new file mode 100644 index 00000000000000..85133ab81cc602 --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_ul.cpp @@ -0,0 +1,20 @@ +//===-- Implementation of stdc_has_single_bit_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_has_single_bit_ul.h" + +#include "src/__support/CPP/bit.h" +#include "src/__support/common.h" + +namespace LIBC_NAMESPACE { + +LLVM_LIBC_FUNCTION(bool, stdc_has_single_bit_ul, (unsigned long value)) { + return cpp::has_single_bit(value); +} + +} // namespace LIBC_NAMESPACE diff --git a/libc/src/stdbit/stdc_has_single_bit_ul.h b/libc/src/stdbit/stdc_has_single_bit_ul.h new file mode 100644 index 00000000000000..9b924fca9f065d --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_ul.h @@ -0,0 +1,18 @@ +//===-- Implementation header for stdc_has_single_bit_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_HAS_SINGLE_BIT_UL_H +#define LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_UL_H + +namespace LIBC_NAMESPACE { + +bool stdc_has_single_bit_ul(unsigned long value); + +} // namespace LIBC_NAMESPACE + +#endif // LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_UL_H diff --git a/libc/src/stdbit/stdc_has_single_bit_ull.cpp b/libc/src/stdbit/stdc_has_single_bit_ull.cpp new file mode 100644 index 00000000000000..4491cf2b98b6d3 --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_ull.cpp @@ -0,0 +1,20 @@ +//===-- Implementation of stdc_has_single_bit_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_has_single_bit_ull.h" + +#include "src/__support/CPP/bit.h" +#include "src/__support/common.h" + +namespace LIBC_NAMESPACE { + +LLVM_LIBC_FUNCTION(bool, stdc_has_single_bit_ull, (unsigned long long value)) { + return cpp::has_single_bit(value); +} + +} // namespace LIBC_NAMESPACE diff --git a/libc/src/stdbit/stdc_has_single_bit_ull.h b/libc/src/stdbit/stdc_has_single_bit_ull.h new file mode 100644 index 00000000000000..d4802bc287274f --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_ull.h @@ -0,0 +1,18 @@ +//===-- Implementation header for stdc_has_single_bit_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_HAS_SINGLE_BIT_ULL_H +#define LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_ULL_H + +namespace LIBC_NAMESPACE { + +bool stdc_has_single_bit_ull(unsigned long long value); + +} // namespace LIBC_NAMESPACE + +#endif // LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_ULL_H diff --git a/libc/src/stdbit/stdc_has_single_bit_us.cpp b/libc/src/stdbit/stdc_has_single_bit_us.cpp new file mode 100644 index 00000000000000..7a42ae553aa2e8 --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_us.cpp @@ -0,0 +1,20 @@ +//===-- Implementation of stdc_has_single_bit_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_has_single_bit_us.h" + +#include "src/__support/CPP/bit.h" +#include "src/__support/common.h" + +namespace LIBC_NAMESPACE { + +LLVM_LIBC_FUNCTION(bool, stdc_has_single_bit_us, (unsigned short value)) { + return cpp::has_single_bit(value); +} + +} // namespace LIBC_NAMESPACE diff --git a/libc/src/stdbit/stdc_has_single_bit_us.h b/libc/src/stdbit/stdc_has_single_bit_us.h new file mode 100644 index 00000000000000..201ff4954c3b7a --- /dev/null +++ b/libc/src/stdbit/stdc_has_single_bit_us.h @@ -0,0 +1,18 @@ +//===-- Implementation header for stdc_has_single_bit_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_HAS_SINGLE_BIT_US_H +#define LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_US_H + +namespace LIBC_NAMESPACE { + +bool stdc_has_single_bit_us(unsigned short value); + +} // namespace LIBC_NAMESPACE + +#endif // LLVM_LIBC_SRC_STDBIT_STDC_HAS_SINGLE_BIT_US_H diff --git a/libc/test/include/stdbit_test.cpp b/libc/test/include/stdbit_test.cpp index 46019075a7c109..acb79ca0f3ff11 100644 --- a/libc/test/include/stdbit_test.cpp +++ b/libc/test/include/stdbit_test.cpp @@ -81,6 +81,11 @@ unsigned stdc_count_ones_us(unsigned short) noexcept { return 0x3BU; } unsigned stdc_count_ones_ui(unsigned) noexcept { return 0x3CU; } unsigned stdc_count_ones_ul(unsigned long) noexcept { return 0x3DU; } unsigned stdc_count_ones_ull(unsigned long long) noexcept { return 0x3FU; } +bool stdc_has_single_bit_uc(unsigned char) noexcept { return false; } +bool stdc_has_single_bit_us(unsigned short) noexcept { return false; } +bool stdc_has_single_bit_ui(unsigned) noexcept { return false; } +bool stdc_has_single_bit_ul(unsigned long) noexcept { return false; } +bool stdc_has_single_bit_ull(unsigned long long) noexcept { return false; } } #include "include/llvm-libc-macros/stdbit-macros.h" @@ -164,3 +169,11 @@ TEST(LlvmLibcStdbitTest, TypeGenericMacroCountOnes) { EXPECT_EQ(stdc_count_ones(0UL), 0x3DU); EXPECT_EQ(stdc_count_ones(0ULL), 0x3FU); } + +TEST(LlvmLibcStdbitTest, TypeGenericMacroHasSingleBit) { + EXPECT_EQ(stdc_has_single_bit(static_cast(1U)), false); + EXPECT_EQ(stdc_has_single_bit(static_cast(1U)), false); + EXPECT_EQ(stdc_has_single_bit(1U), false); + EXPECT_EQ(stdc_has_single_bit(1UL), false); + EXPECT_EQ(stdc_has_single_bit(1ULL), false); +} diff --git a/libc/test/src/stdbit/CMakeLists.txt b/libc/test/src/stdbit/CMakeLists.txt index 659e575fedea27..a886ee4a35325d 100644 --- a/libc/test/src/stdbit/CMakeLists.txt +++ b/libc/test/src/stdbit/CMakeLists.txt @@ -11,6 +11,7 @@ set(prefixes first_trailing_one count_zeros count_ones + has_single_bit ) set(suffixes c s i l ll) foreach(prefix IN LISTS prefixes) diff --git a/libc/test/src/stdbit/stdc_has_single_bit_uc_test.cpp b/libc/test/src/stdbit/stdc_has_single_bit_uc_test.cpp new file mode 100644 index 00000000000000..6212b1ec765a5d --- /dev/null +++ b/libc/test/src/stdbit/stdc_has_single_bit_uc_test.cpp @@ -0,0 +1,20 @@ +//===-- Unittests for stdc_has_single_bit_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_has_single_bit_uc.h" +#include "test/UnitTest/Test.h" + +TEST(LlvmLibcStdcCountOnesUcTest, Zero) { + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_uc(0U), false); +} + +TEST(LlvmLibcStdcCountOnesUcTest, OneHot) { + for (unsigned i = 0U; i != UCHAR_WIDTH; ++i) + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_uc(1U << i), true); +} diff --git a/libc/test/src/stdbit/stdc_has_single_bit_ui_test.cpp b/libc/test/src/stdbit/stdc_has_single_bit_ui_test.cpp new file mode 100644 index 00000000000000..2e00507aa0258c --- /dev/null +++ b/libc/test/src/stdbit/stdc_has_single_bit_ui_test.cpp @@ -0,0 +1,20 @@ +//===-- Unittests for stdc_has_single_bit_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_has_single_bit_ui.h" +#include "test/UnitTest/Test.h" + +TEST(LlvmLibcStdcCountOnesUiTest, Zero) { + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_ui(0U), false); +} + +TEST(LlvmLibcStdcCountOnesUiTest, OneHot) { + for (unsigned i = 0U; i != UINT_WIDTH; ++i) + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_ui(1U << i), true); +} diff --git a/libc/test/src/stdbit/stdc_has_single_bit_ul_test.cpp b/libc/test/src/stdbit/stdc_has_single_bit_ul_test.cpp new file mode 100644 index 00000000000000..8c0178998bbec1 --- /dev/null +++ b/libc/test/src/stdbit/stdc_has_single_bit_ul_test.cpp @@ -0,0 +1,20 @@ +//===-- Unittests for stdc_has_single_bit_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_has_single_bit_ul.h" +#include "test/UnitTest/Test.h" + +TEST(LlvmLibcStdcCountOnesUlTest, Zero) { + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_ul(0U), false); +} + +TEST(LlvmLibcStdcCountOnesUlTest, OneHot) { + for (unsigned i = 0U; i != ULONG_WIDTH; ++i) + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_ul(1UL << i), true); +} diff --git a/libc/test/src/stdbit/stdc_has_single_bit_ull_test.cpp b/libc/test/src/stdbit/stdc_has_single_bit_ull_test.cpp new file mode 100644 index 00000000000000..1d9f976b6d6338 --- /dev/null +++ b/libc/test/src/stdbit/stdc_has_single_bit_ull_test.cpp @@ -0,0 +1,20 @@ +//===-- Unittests for stdc_has_single_bit_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/__support/CPP/limits.h" +#include "src/stdbit/stdc_has_single_bit_ull.h" +#include "test/UnitTest/Test.h" + +TEST(LlvmLibcStdcCountOnesUllTest, Zero) { + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_ull(0U), false); +} + +TEST(LlvmLibcStdcCountOnesUllTest, OneHot) { + for (unsigned i = 0U; i != ULLONG_WIDTH; ++i) + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_ull(1ULL << i), true); +} diff --git a/libc/test/src/stdbit/stdc_has_single_bit_us_test.cpp b/libc/test/src/stdbit/stdc_has_single_bit_us_test.cpp new file mode 100644 index 00000000000000..52c4de88104459 --- /dev/null +++ b/libc/test/src/stdbit/stdc_has_single_bit_us_test.cpp @@ -0,0 +1,20 @@ +//===-- Unittests for stdc_has_single_bit_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/__support/CPP/limits.h" +#include "src/stdbit/stdc_has_single_bit_us.h" +#include "test/UnitTest/Test.h" + +TEST(LlvmLibcStdcCountOnesUsTest, Zero) { + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_us(0U), false); +} + +TEST(LlvmLibcStdcCountOnesUsTest, OneHot) { + for (unsigned i = 0U; i != USHRT_WIDTH; ++i) + EXPECT_EQ(LIBC_NAMESPACE::stdc_has_single_bit_us(1U << i), true); +}