libcruft-util/test/endian.cpp

#include <cruft/util/tap.hpp>

#include <cruft/util/endian.hpp>

#include <cstdint>


///////////////////////////////////////////////////////////////////////////////
int
main (void)
{
    cruft::TAP::logger tap;

    {
        uint32_t a = 0x12345678, b = 0x78563412;
        tap.expect_eq (a, cruft::bswap (b), "u32 byteswap");
    }

    {
        static std::uint8_t const bytes[] = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
        tap.expect_eq (cruft::readle<std::uint64_t> (bytes), 0xefcdab8967452301, "readle<u64>");
    }

    {
        static constexpr u32 A = 0x11223344;
        static constexpr u32 B = 0x44332211;

        f32 const a_f = cruft::cast::bit<f32> (A);
        f32 const b_f = cruft::bswap (a_f);
        u32 const b_u = cruft::cast::bit<u32> (b_f);

        tap.expect_eq (b_u, B, "f32 bswap");
    }

    {
        static constexpr u64 A = 0x1122334455667788;
        static constexpr u64 B = 0x8877665544332211;

        f64 const a_f = cruft::cast::bit<f64> (A);
        f64 const b_f = cruft::bswap (a_f);
        u64 const b_u = cruft::cast::bit<u64> (b_f);

        tap.expect_eq (b_u, B, "u64 bswap");
    }

    return tap.status ();
}