# CA note

###### tags: `Computer Architecture`

### Computer Architecture note

* 2020 Fall

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## IEEE754 Floating Point Representation

* bias 127
* Single Precision : 32 bits

| sign | exponent | significand |
|:----:|:--------:|:-----------:|
| 1 | 8 | 23 |

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| Exponent | Significand | Object |
|:--------:|:-----------:|:--------------:|
| 0 | 0 | 0 |
| 0 | nonzero | DeNorm |
| 1-254 | anything | Floating point |
| 255 | 0 | +-$\infty$ |
| 255 | nonzero | NaN |

* denorm scope

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