Copyright | (c) 2013-2016 Galois Inc. |
---|---|

License | BSD3 |

Maintainer | cryptol@galois.com |

Stability | provisional |

Portability | portable |

Safe Haskell | Safe |

Language | Haskell2010 |

Solving class constraints.

## Synopsis

- solveZeroInst :: Type -> Solved
- solveLogicInst :: Type -> Solved
- solveRingInst :: Type -> Solved
- solveFieldInst :: Type -> Solved
- solveIntegralInst :: Type -> Solved
- solveRoundInst :: Type -> Solved
- solveEqInst :: Type -> Solved
- solveCmpInst :: Type -> Solved
- solveSignedCmpInst :: Type -> Solved
- solveLiteralInst :: Type -> Type -> Solved
- solveFLiteralInst :: Type -> Type -> Type -> Type -> Solved
- solveValidFloat :: Type -> Type -> Solved

# Documentation

solveZeroInst :: Type -> Solved Source #

Solve a Zero constraint by instance, if possible.

solveLogicInst :: Type -> Solved Source #

Solve a Logic constraint by instance, if possible.

solveRingInst :: Type -> Solved Source #

Solve a Ring constraint by instance, if possible.

solveFieldInst :: Type -> Solved Source #

Solve a Field constraint by instance, if possible.

solveIntegralInst :: Type -> Solved Source #

Solve an Integral constraint by instance, if possible.

solveRoundInst :: Type -> Solved Source #

Solve a Round constraint by instance, if possible.

solveEqInst :: Type -> Solved Source #

Solve Eq constraints.

solveCmpInst :: Type -> Solved Source #

Solve Cmp constraints.

solveSignedCmpInst :: Type -> Solved Source #

Solve SignedCmp constraints.

solveFLiteralInst :: Type -> Type -> Type -> Type -> Solved Source #

Solving fractional literal constraints.

solveValidFloat :: Type -> Type -> Solved Source #

This places constraints on the floating point numbers that we can work with. This is a bit of an odd check, as it is really a limitiation of the backend, and not the language itself.

On the other hand, it helps us give sane results if one accidentally types a polymorphic float at the REPL. Hopefully, most users will stick to particular FP sizes, so this should be quite transparent.