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@tomilov
Last active November 16, 2015 08:07
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#include <iostream>
#include <iomanip>
#include <cstdint>
#include <cstdlib>
int
main()
{
auto const x = -10000000000000000.0L;
union
{
std::uint8_t in[10];
struct
{
std::uint64_t out8;
std::uint8_t out1;
unsigned : 7;
unsigned sign : 1;
};
};
asm("fld %1\n" "fbstp %0" : "=m"(in) : "f"(x) : "memory");
std::cout << std::hex << std::noshowbase;
if (sign != 0) {
std::cout << '-';
}
if (out1 != 0) {
std::cout << std::uint16_t(out1) << std::setfill('0') << std::setw(16);
}
std::cout << out8 << std::endl;
return EXIT_SUCCESS;
}
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