| 49 | } |
| 50 | |
| 51 | void FieldModel<decimal_t>::get(decimal_t& value, decimal_t defaults) const noexcept |
| 52 | { |
| 53 | if ((_buffer.offset() + fbe_offset() + fbe_size()) > _buffer.size()) |
| 54 | { |
| 55 | value = defaults; |
| 56 | return; |
| 57 | } |
| 58 | |
| 59 | // Value taken via reverse engineering the double that corresponds to 2^64 |
| 60 | const double ds2to64 = 1.8446744073709552e+019; |
| 61 | |
| 62 | // Read decimal parts |
| 63 | uint64_t low = *((const uint64_t*)(_buffer.data() + _buffer.offset() + fbe_offset())); |
| 64 | uint32_t high = *((const uint32_t*)(_buffer.data() + _buffer.offset() + fbe_offset() + 8)); |
| 65 | uint32_t flags = *((const uint32_t*)(_buffer.data() + _buffer.offset() + fbe_offset() + 12)); |
| 66 | |
| 67 | // Calculate decimal value |
| 68 | double dValue = ((double)low + (double)high * ds2to64) / pow(10.0, (uint8_t)(flags >> 16)); |
| 69 | if (flags & 0x80000000) |
| 70 | dValue = -dValue; |
| 71 | |
| 72 | value = dValue; |
| 73 | } |
| 74 | |
| 75 | void FieldModel<decimal_t>::set(decimal_t value) noexcept |
| 76 | { |