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Double-precision floating point numbers have the following format:
| 63 | 62 | 52 | 51 | 0 |
|---|---|---|---|---|
| SIGN | EXPONENT | FRACTION | ||
| ^ | ||||
| binary point | ||||
| Field | Position | Full name |
|---|---|---|
| sign | 63 | sign bit (0==positive, 1==negative) |
| exponent | 62-52 | exponent (biased by 1023) |
| fraction | 51-0 | fraction (bits to right of binary point) |