libc/test/include/isnan_test.c

   1 //===-- Unittests for isnan macro -----------------------------------------===//
   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 #include "include/llvm-libc-macros/math-function-macros.h"
   9
  10 #include <assert.h>
  11
  12 // check if macro is defined
  13 #ifndef isnan
  14 #error "isnan macro is not defined"
  15 #else
  16 int main(void) {
  17   assert(!isnan(1.0f));
  18   assert(!isnan(1.0));
  19   assert(!isnan(1.0L));
  20   return 0;
  21 }
  22 #endif