libc/src/fenv/fetestexceptflag.cpp

   1 //===-- Implementation of fetestexceptflag function -----------------------===//
   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/fetestexceptflag.h"
  10 #include "hdr/types/fexcept_t.h"
  11 #include "src/__support/FPUtil/FEnvImpl.h"
  12 #include "src/__support/common.h"
  13 #include "src/__support/macros/config.h"
  14
  15 namespace LIBC_NAMESPACE_DECL {
  16
  17 LLVM_LIBC_FUNCTION(int, fetestexceptflag,
  18                    (const fexcept_t *flagp, int excepts)) {
  19   static_assert(sizeof(int) >= sizeof(fexcept_t),
  20                 "fexcept_t value cannot fit in an int value.");
  21   return *flagp | fputil::test_except(excepts);
  22 }
  23
  24 } // namespace LIBC_NAMESPACE_DECL