kc3-lang/gnulib/tests/test-htonl.c

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• tests/test-htonl.c

• /* Test of host and network byte order conversion functions.
     Copyright (C) 2024-2025 Free Software Foundation, Inc.
  
     This file is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.
  
     This file is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Collin Funk <collin.funk1@gmail.com>, 2024.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <arpa/inet.h>
  
  #include <endian.h>
  #include <stdint.h>
  
  #include "macros.h"
  
  /* Test byte order conversion functions with constant values.  */
  static void
  test_convert_constant (void)
  {
  #if BYTE_ORDER == BIG_ENDIAN
    /* 16-bit.  */
    ASSERT (htons (UINT16_C (0x1234)) == UINT16_C (0x1234));
    ASSERT (ntohs (UINT16_C (0x1234)) == UINT16_C (0x1234));
  
    /* 32-bit.  */
    ASSERT (htonl (UINT32_C (0x12345678)) == UINT32_C (0x12345678));
    ASSERT (ntohl (UINT32_C (0x12345678)) == UINT32_C (0x12345678));
  #else
    /* 16-bit.  */
    ASSERT (htons (UINT16_C (0x1234)) == UINT16_C (0x3412));
    ASSERT (ntohs (UINT16_C (0x1234)) == UINT16_C (0x3412));
  
    /* 32-bit.  */
    ASSERT (htonl (UINT32_C (0x12345678)) == UINT32_C (0x78563412));
    ASSERT (ntohl (UINT32_C (0x12345678)) == UINT32_C (0x78563412));
  #endif
  }
  
  /* Test that the byte order conversion functions evaluate their
     arguments once.  */
  static void
  test_convert_eval_once (void)
  {
    /* 16-bit.  */
    {
      uint16_t value = 0;
      ASSERT (htons (value++) == 0);
      ASSERT (value == 1);
    }
    {
      uint16_t value = 0;
      ASSERT (ntohs (value++) == 0);
      ASSERT (value == 1);
    }
  
    /* 32-bit.  */
    {
      uint32_t value = 0;
      ASSERT (htonl (value++) == 0);
      ASSERT (value == 1);
    }
    {
      uint32_t value = 0;
      ASSERT (ntohl (value++) == 0);
      ASSERT (value == 1);
    }
  }
  
  /* Test that the byte order conversion functions accept floating-point
     arguments.  */
  static void
  test_convert_double (void)
  {
    /* 16-bit.  */
    ASSERT (htons (0.0) == 0);
    ASSERT (ntohs (0.0) == 0);
  
    /* 32-bit.  */
    ASSERT (htonl (0.0) == 0);
    ASSERT (ntohs (0.0) == 0);
  }
  
  int
  main (void)
  {
    test_convert_constant ();
    test_convert_eval_once ();
    test_convert_double ();
  
    return test_exit_status;
  }
  

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