| cap | Feldspar.Core.Expr, Feldspar.Core, Feldspar |
| catch | Feldspar.Prelude, Feldspar |
| ceiling | Feldspar.Prelude, Feldspar |
| Char | Feldspar.Prelude, Feldspar |
| clearBit | Feldspar.Core.Functions, Feldspar.Core, Feldspar |
| compare | Feldspar.Prelude, Feldspar |
| complement | Feldspar.Core.Functions, Feldspar.Core, Feldspar |
| complementBit | Feldspar.Core.Functions, Feldspar.Core, Feldspar |
| Computable | Feldspar.Core.Expr, Feldspar.Core, Feldspar |
| concat | Feldspar.Prelude, Feldspar |
| concatMap | Feldspar.Prelude, Feldspar |
| const | Feldspar.Prelude, Feldspar |
| Constant | Feldspar.Core.Graph |
| cos | Feldspar.Prelude, Feldspar |
| cosh | Feldspar.Prelude, Feldspar |
| countBits | Feldspar.Core.Functions, Feldspar.Core, Feldspar |
| curry | Feldspar.Prelude, Feldspar |
| cycle |
| 1 (Function) | Feldspar.Prelude, Feldspar |
| 2 (Function) | Feldspar.Stream |