libc/test/src/fenv/feclearexcept_test.cpp

   1 //===-- Unittests for feclearexcept with exceptions enabled ---------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/fenv/feclearexcept.h"
  10
  11 #include "src/__support/FPUtil/FEnvImpl.h"
  12 #include "test/UnitTest/FEnvSafeTest.h"
  13 #include "test/UnitTest/Test.h"
  14
  15 #include "hdr/fenv_macros.h"
  16 #include <stdint.h>
  17
  18 #include "excepts.h"
  19
  20 using LlvmLibcFEnvTest = LIBC_NAMESPACE::testing::FEnvSafeTest;
  21
  22 TEST_F(LlvmLibcFEnvTest, ClearTest) {
  23   LIBC_NAMESPACE::fputil::disable_except(FE_ALL_EXCEPT);
  24   LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
  25
  26   for (int e : EXCEPTS)
  27     ASSERT_EQ(LIBC_NAMESPACE::fputil::test_except(e), 0);
  28
  29   LIBC_NAMESPACE::fputil::raise_except(FE_ALL_EXCEPT);
  30
  31   for (int e1 : EXCEPTS) {
  32     for (int e2 : EXCEPTS) {
  33       for (int e3 : EXCEPTS) {
  34         for (int e4 : EXCEPTS) {
  35           for (int e5 : EXCEPTS) {
  36             // We clear one exception and test to verify that it was cleared.
  37             LIBC_NAMESPACE::feclearexcept(e1 | e2 | e3 | e4 | e5);
  38             ASSERT_EQ(
  39                 LIBC_NAMESPACE::fputil::test_except(e1 | e2 | e3 | e4 | e5), 0);
  40             // After clearing, we raise the exception again.
  41             LIBC_NAMESPACE::fputil::raise_except(e1 | e2 | e3 | e4 | e5);
  42           }
  43         }
  44       }
  45     }
  46   }
  47 }