[libc-commits] [libc] 739ede4 - [libc][[math] Implement IsZero Macro (#109336)
via libc-commits
libc-commits at lists.llvm.org
Fri Sep 20 10:00:09 PDT 2024
Author: Shourya Goel
Date: 2024-09-20T13:00:01-04:00
New Revision: 739ede400b7aa7dfbec771b0d5e9c47f9da5d6cb
URL: https://github.com/llvm/llvm-project/commit/739ede400b7aa7dfbec771b0d5e9c47f9da5d6cb
DIFF: https://github.com/llvm/llvm-project/commit/739ede400b7aa7dfbec771b0d5e9c47f9da5d6cb.diff
LOG: [libc][[math] Implement IsZero Macro (#109336)
#109201
Added:
libc/test/include/IsZeroTest.h
libc/test/include/iszero_test.c
libc/test/include/iszero_test.cpp
libc/test/include/iszerof_test.cpp
libc/test/include/iszerol_test.cpp
Modified:
libc/include/llvm-libc-macros/math-function-macros.h
libc/test/include/CMakeLists.txt
Removed:
################################################################################
diff --git a/libc/include/llvm-libc-macros/math-function-macros.h b/libc/include/llvm-libc-macros/math-function-macros.h
index 8d18997bed8d26..afbabd023203a2 100644
--- a/libc/include/llvm-libc-macros/math-function-macros.h
+++ b/libc/include/llvm-libc-macros/math-function-macros.h
@@ -13,5 +13,6 @@
#define isinf(x) __builtin_isinf(x)
#define isnan(x) __builtin_isnan(x)
#define signbit(x) __builtin_signbit(x)
+#define iszero(x) (x == 0)
#endif // LLVM_LIBC_MACROS_MATH_FUNCTION_MACROS_H
diff --git a/libc/test/include/CMakeLists.txt b/libc/test/include/CMakeLists.txt
index 32513f234b9b99..1a2f18731565c2 100644
--- a/libc/test/include/CMakeLists.txt
+++ b/libc/test/include/CMakeLists.txt
@@ -81,6 +81,36 @@ add_libc_test(
libc.include.llvm-libc-macros.stdckdint_macros
)
+add_libc_test(
+ iszero_test
+ SUITE
+ libc_include_tests
+ SRCS
+ iszero_test.cpp
+ DEPENDS
+ libc.include.llvm-libc-macros.math_function_macros
+)
+
+add_libc_test(
+ iszerof_test
+ SUITE
+ libc_include_tests
+ SRCS
+ iszerof_test.cpp
+ DEPENDS
+ libc.include.llvm-libc-macros.math_function_macros
+)
+
+add_libc_test(
+ iszerol_test
+ SUITE
+ libc_include_tests
+ SRCS
+ iszerol_test.cpp
+ DEPENDS
+ libc.include.llvm-libc-macros.math_function_macros
+)
+
add_libc_test(
signbit_test
SUITE
@@ -260,3 +290,18 @@ add_libc_test(
DEPENDS
libc.include.llvm-libc-macros.math_function_macros
)
+
+add_libc_test(
+ iszero_c_test
+ C_TEST
+ UNIT_TEST_ONLY
+ SUITE
+ libc_include_tests
+ SRCS
+ iszero_test.c
+ COMPILE_OPTIONS
+ -Wall
+ -Werror
+ DEPENDS
+ libc.include.llvm-libc-macros.math_function_macros
+)
diff --git a/libc/test/include/IsZeroTest.h b/libc/test/include/IsZeroTest.h
new file mode 100644
index 00000000000000..83871963cd2125
--- /dev/null
+++ b/libc/test/include/IsZeroTest.h
@@ -0,0 +1,38 @@
+//===-- Utility class to test the iszero macro -----------------*- 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_TEST_INCLUDE_MATH_ISZERO_H
+#define LLVM_LIBC_TEST_INCLUDE_MATH_ISZERO_H
+
+#include "test/UnitTest/FPMatcher.h"
+#include "test/UnitTest/Test.h"
+
+#include "include/llvm-libc-macros/math-function-macros.h"
+
+template <typename T> class IsZeroTest : public LIBC_NAMESPACE::testing::Test {
+ DECLARE_SPECIAL_CONSTANTS(T)
+
+public:
+ typedef bool (*IsZeroFunc)(T);
+
+ void testSpecialNumbers(IsZeroFunc func) {
+ EXPECT_FALSE(func(inf));
+ EXPECT_FALSE(func(neg_inf));
+ EXPECT_TRUE(func(zero));
+ EXPECT_TRUE(func(neg_zero));
+ }
+};
+
+#define LIST_ISZERO_TESTS(T, func) \
+ using LlvmLibcIsZeroTest = IsZeroTest<T>; \
+ TEST_F(LlvmLibcIsZeroTest, SpecialNumbers) { \
+ auto iszero_func = [](T x) { return func(x); }; \
+ testSpecialNumbers(iszero_func); \
+ }
+
+#endif // LLVM_LIBC_TEST_INCLUDE_MATH_ISZERO_H
diff --git a/libc/test/include/iszero_test.c b/libc/test/include/iszero_test.c
new file mode 100644
index 00000000000000..be2d34ae3e395b
--- /dev/null
+++ b/libc/test/include/iszero_test.c
@@ -0,0 +1,25 @@
+//===-- Unittests for iszero macro ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+#include "include/llvm-libc-macros/math-function-macros.h"
+
+#include <assert.h>
+
+// check if macro is defined
+#ifndef iszero
+#error "iszero macro is not defined"
+#else
+int main(void) {
+ assert(iszero(1.0f) == 0);
+ assert(iszero(1.0) == 0);
+ assert(iszero(1.0L) == 0);
+ assert(iszero(0.0f) == 1);
+ assert(iszero(0.0) == 1);
+ assert(iszero(0.0L) == 1);
+ return 0;
+}
+#endif
diff --git a/libc/test/include/iszero_test.cpp b/libc/test/include/iszero_test.cpp
new file mode 100644
index 00000000000000..c47809708e0bc5
--- /dev/null
+++ b/libc/test/include/iszero_test.cpp
@@ -0,0 +1,12 @@
+//===-- Unittest for iszero[d] macro --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "IsZeroTest.h"
+#include "include/llvm-libc-macros/math-function-macros.h"
+
+LIST_ISZERO_TESTS(double, iszero)
diff --git a/libc/test/include/iszerof_test.cpp b/libc/test/include/iszerof_test.cpp
new file mode 100644
index 00000000000000..8bf5319f6e9be5
--- /dev/null
+++ b/libc/test/include/iszerof_test.cpp
@@ -0,0 +1,12 @@
+//===-- Unittest for iszero[f] macro --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "IsZeroTest.h"
+#include "include/llvm-libc-macros/math-function-macros.h"
+
+LIST_ISZERO_TESTS(float, iszero)
diff --git a/libc/test/include/iszerol_test.cpp b/libc/test/include/iszerol_test.cpp
new file mode 100644
index 00000000000000..1b1249f9f0552a
--- /dev/null
+++ b/libc/test/include/iszerol_test.cpp
@@ -0,0 +1,12 @@
+//===-- Unittest for iszero[l] macro --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "IsZeroTest.h"
+#include "include/llvm-libc-macros/math-function-macros.h"
+
+LIST_ISZERO_TESTS(long double, iszero)
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