**Summary**
```
- Instructions added: maddsubrs, fdmadds, ffmadds
+ Instructions added: maddsubrs, fdmadd(s), ffmadd(s), ffadd(s), ffsub(s)
```
**Submitter**: Luke Leighton (Libre-SOC)
**Keywords**:
```
- CR Fields, predication, GPR
+ DCT, FFT, NTT, DFT, Twin-Butterfly, Audio/Video, DSP, Radar,
+ Scientific Computing.
```
**Motivation**
| Form | Book | Page | Version | Mnemonic | Description |
|------|------|------|---------|----------|-------------|
| A | I | # | 3.2B | maddsubrs | Integer DCT/FFT Twin-Butterfly |
-| X | I | # | 3.2B | fdmadds | FP DCT Twin-Butterfly |
-| X | I | # | 3.2B | ffmadds | FP FFT Twin-Butterfly |
+| X | I | # | 3.2B | fdmadds | FP DCT Twin-Butterfly Single |
+| X | I | # | 3.2B | ffmadds | FP FFT Twin-Butterfly Single |
+| X | I | # | 3.2B | fdmadds | FP DCT Twin-Butterfly Double |
+| X | I | # | 3.2B | ffmadds | FP FFT Twin-Butterfly Double |
+| X | I | # | 3.2B | ffadds | FP FFT Twin-Butterfly Single |
+| X | I | # | 3.2B | ffadd | FP FFT Twin-Butterfly Double |
+| X | I | # | 3.2B | ffsubs | FP FFT Twin-Butterfly Single |
+| X | I | # | 3.2B | ffsub | FP FFT Twin-Butterfly Double |
[[!tag opf_rfc]]