# Dynamic accuracy CSR <a name="dynamic"></a>
| 31....11 | 10..8 | 7..5 | 4....0 |
+| -------- | ------ | ---- | ------ |
| reserved | facc | frm | fflags |
+[[!table data="""
| facc | mode | description |
| 0b000 | IEEE754 | correctly rounded |
| 0b010 | ULP<1 | Unit Last Place < 1 |
| 0b100 | Vulkan | Vulkan compliant |
| 0b110 | Appx | Machine Learning |
+"""]]
maybe a solution would be to add an extra field to the fp control csr
to allow selecting one of several accurate or fast modes: