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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/tests/include/byteswap_test.c
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/*-

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 * Copyright (c) 2021 M. Warner Losh <[email protected]>

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 *

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 * SPDX-License-Identifier: BSD-2-Clause

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 */

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#include <byteswap.h>

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#include <atf-c.h>

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ATF_TC(byteswap);

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ATF_TC_HEAD(byteswap, tc)

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{

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	atf_tc_set_md_var(tc, "descr", "Test swapping macros in <byteswap.h>");

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}

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ATF_TC_BODY(byteswap, tc)

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{

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	uint16_t ui16;

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	uint32_t ui32;

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	uint64_t ui64;

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	/* glibc defines the {__,}bswap_{16,32,64} */

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#ifndef __bswap_16

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	atf_tc_fail_nonfatal("__bswap_16 not defined");

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#endif

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#ifndef bswap_16

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	atf_tc_fail_nonfatal("bswap_16 not defined");

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#endif

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#ifndef __bswap_32

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	atf_tc_fail_nonfatal("__bswap_32 not defined");

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#endif

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#ifndef bswap_32

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	atf_tc_fail_nonfatal("bswap_32 not defined");

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#endif

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#ifndef __bswap_64

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	atf_tc_fail_nonfatal("__bswap_64 not defined");

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#endif

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#ifndef bswap_64

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	atf_tc_fail_nonfatal("bswap_64 not defined");

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#endif

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	/* glibc does not define bswap{16,32,64} */

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#ifdef bswap16

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	atf_tc_fail_nonfatal("bswap16 improperly defined");

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#endif

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#ifdef bswap32

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	atf_tc_fail_nonfatal("bswap32 improperly defined");

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#endif

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#ifdef bswap64

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	atf_tc_fail_nonfatal("bswap64 improperly defined");

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#endif

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	ui16 = 0x1234;

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	ATF_REQUIRE_MSG(0x3412 == bswap_16(ui16),

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	    "bswap16(%#x) != 0x3412 instead %#x\n", ui16, bswap_16(ui16));

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	ui32 = 0x12345678ul;

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	ATF_REQUIRE_MSG(0x78563412ul == bswap_32(ui32),

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	    "bswap32(%#lx) != 0x78563412 instead %#lx\n",

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	    (unsigned long)ui32, (unsigned long)bswap_32(ui32));

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	ui64 = 0x123456789abcdef0ull;

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	ATF_REQUIRE_MSG(0xf0debc9a78563412ull == bswap_64(ui64),

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	    "bswap64(%#llx) != 0x3412 instead %#llx\n",

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	    (unsigned long long)ui64, (unsigned long long)bswap_64(ui64));

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}

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ATF_TP_ADD_TCS(tp)

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{

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	ATF_TP_ADD_TC(tp, byteswap);

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	return atf_no_error();

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}

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