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// Copyright (c) 2012, Robert Escriva
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of this project nor the names of its contributors may
// be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#pragma GCC diagnostic ignored "-Wfloat-equal"
// C
#include <cstring>
// e
#include "th.h"
#include "e/endian.h"
#define ASSERT_MEMCMP(X, Y, S) ASSERT_EQ(0, memcmp(X, Y, S))
namespace
{
TEST(EndianTest, Pack)
{
uint8_t buffer[sizeof(int64_t)];
e::pack8be(uint8_t(0xde), buffer);
ASSERT_MEMCMP(buffer, "\xde", 1);
e::pack8le(uint8_t(0xde), buffer);
ASSERT_MEMCMP(buffer, "\xde", 1);
e::pack8be(int8_t(0xde), buffer);
ASSERT_MEMCMP(buffer, "\xde", 1);
e::pack8le(int8_t(0xde), buffer);
ASSERT_MEMCMP(buffer, "\xde", 1);
e::pack16be(uint16_t(0xdead), buffer);
ASSERT_MEMCMP(buffer, "\xde\xad", 2);
e::pack16le(uint16_t(0xdead), buffer);
ASSERT_MEMCMP(buffer, "\xad\xde", 2);
e::pack16be(int16_t(0xdead), buffer);
ASSERT_MEMCMP(buffer, "\xde\xad", 2);
e::pack16le(int16_t(0xdead), buffer);
ASSERT_MEMCMP(buffer, "\xad\xde", 2);
e::pack32be(uint32_t(0xdeadbeefUL), buffer);
ASSERT_MEMCMP(buffer, "\xde\xad\xbe\xef", 4);
e::pack32le(uint32_t(0xdeadbeefUL), buffer);
ASSERT_MEMCMP(buffer, "\xef\xbe\xad\xde", 4);
e::pack32be(int32_t(0xdeadbeefUL), buffer);
ASSERT_MEMCMP(buffer, "\xde\xad\xbe\xef", 4);
e::pack32le(int32_t(0xdeadbeefUL), buffer);
ASSERT_MEMCMP(buffer, "\xef\xbe\xad\xde", 4);
e::pack64be(uint64_t(0xdeadbeefcafebabeULL), buffer);
ASSERT_MEMCMP(buffer, "\xde\xad\xbe\xef\xca\xfe\xba\xbe", 8);
e::pack64le(uint64_t(0xdeadbeefcafebabeULL), buffer);
ASSERT_MEMCMP(buffer, "\xbe\xba\xfe\xca\xef\xbe\xad\xde", 8);
e::pack64be(int64_t(0xdeadbeefcafebabeULL), buffer);
ASSERT_MEMCMP(buffer, "\xde\xad\xbe\xef\xca\xfe\xba\xbe", 8);
e::pack64le(int64_t(0xdeadbeefcafebabeULL), buffer);
ASSERT_MEMCMP(buffer, "\xbe\xba\xfe\xca\xef\xbe\xad\xde", 8);
float f = 16711938.0;
e::packfloatbe(f, buffer);
ASSERT_MEMCMP(buffer, "\x4b\x7f\x01\x02", 4);
e::packfloatle(f, buffer);
ASSERT_MEMCMP(buffer, "\x02\x01\x7f\x4b", 4);
double d = 9006104071832581.0;
e::packdoublebe(d, buffer);
ASSERT_MEMCMP(buffer, "\x43\x3f\xff\x01\x02\x03\x04\x05", 8);
e::packdoublele(d, buffer);
ASSERT_MEMCMP(buffer, "\x05\x04\x03\x02\x01\xff\x3f\x43", 8);
}
TEST(EndianTest, Unpack)
{
const uint8_t buffer8[] = "\xde";
const uint8_t buffer16[] = "\xde\xad";
const uint8_t buffer32[] = "\xde\xad\xbe\xef";
const uint8_t buffer64[] = "\xde\xad\xbe\xef\xca\xfe\xba\xbe";
const uint8_t bufferfloatbe[] = "\x4b\x7f\x01\x02";
const uint8_t bufferfloatle[] = "\x02\x01\x7f\x4b";
const uint8_t bufferdoublebe[] = "\x43\x3f\xff\x01\x02\x03\x04\x05";
const uint8_t bufferdoublele[] = "\x05\x04\x03\x02\x01\xff\x3f\x43";
uint8_t unsigned8;
int8_t signed8;
uint16_t unsigned16;
int16_t signed16;
uint32_t unsigned32;
int32_t signed32;
uint64_t unsigned64;
int64_t signed64;
float f;
double d;
e::unpack8be(buffer8, &unsigned8);
ASSERT_EQ(0xde, unsigned8);
e::unpack8le(buffer8, &unsigned8);
ASSERT_EQ(0xde, unsigned8);
e::unpack8be(buffer8, &signed8);
ASSERT_EQ(int8_t(0xde), signed8);
e::unpack8le(buffer8, &signed8);
ASSERT_EQ(int8_t(0xde), signed8);
e::unpack16be(buffer16, &unsigned16);
ASSERT_EQ(0xdead, unsigned16);
e::unpack16le(buffer16, &unsigned16);
ASSERT_EQ(0xadde, unsigned16);
e::unpack16be(buffer16, &signed16);
ASSERT_EQ(int16_t(0xdead), signed16);
e::unpack16le(buffer16, &signed16);
ASSERT_EQ(int16_t(0xadde), signed16);
e::unpack32be(buffer32, &unsigned32);
ASSERT_EQ(0xdeadbeefUL, unsigned32);
e::unpack32le(buffer32, &unsigned32);
ASSERT_EQ(0xefbeaddeUL, unsigned32);
e::unpack32be(buffer32, &signed32);
ASSERT_EQ(int32_t(0xdeadbeefUL), signed32);
e::unpack32le(buffer32, &signed32);
ASSERT_EQ(int32_t(0xefbeaddeUL), signed32);
e::unpack64be(buffer64, &unsigned64);
ASSERT_EQ(0xdeadbeefcafebabeULL, unsigned64);
e::unpack64le(buffer64, &unsigned64);
ASSERT_EQ(0xbebafecaefbeaddeULL, unsigned64);
e::unpack64be(buffer64, &signed64);
ASSERT_EQ(int64_t(0xdeadbeefcafebabeULL), signed64);
e::unpack64le(buffer64, &signed64);
ASSERT_EQ(int64_t(0xbebafecaefbeaddeULL), signed64);
e::unpackfloatbe(bufferfloatbe, &f);
ASSERT_EQ(16711938.0, f);
e::unpackfloatle(bufferfloatle, &f);
ASSERT_EQ(16711938.0, f);
e::unpackdoublebe(bufferdoublebe, &d);
ASSERT_EQ(9006104071832581.0, d);
e::unpackdoublele(bufferdoublele, &d);
ASSERT_EQ(9006104071832581.0, d);
}
} // namespace
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