Function NumToNiceStr

vulkaninfo/vulkaninfo.cpp:445–465

#define kBufferSize 32

std::string NumToNiceStr(const size_t sz) {
    const char prefixes[] = "KMGTPEZY";
    char buf[kBufferSize];
    int which = -1;
    double result = (double)sz;
    while (result > 1024 && which < 7) {
        result /= 1024;
        ++which;
    }

    char unit[] = "\0i";
    if (which >= 0) {
        unit[0] = prefixes[which];
    }
#ifdef _WIN32
    _snprintf_s(buf, kBufferSize * sizeof(char), kBufferSize, "%.2f %sB", result, unit);
#else
    snprintf(buf, kBufferSize, "%.2f %sB", result, unit);
#endif
    return std::string(buf);
}

std::string append_human_readable(VkDeviceSize memory) {
    return std::to_string(memory) + " (" + to_hex_str(memory) + ") (" + NumToNiceStr(static_cast<size_t>(memory)) + ")";