{-# language FlexibleContexts #-}
{-# language OverloadedStrings #-}
{-# language TypeFamilies #-}
{-# options_ghc -fno-warn-redundant-constraints #-}
module Rel8.Expr.Num
( fromIntegral
, realToFrac
, div, mod, divMod
, quot, rem, quotRem
, ceiling, floor, round, truncate
)
where
import Prelude ( (+), (-), fst, negate, signum, snd )
import Rel8.Expr ( Expr( Expr ) )
import Rel8.Expr.Eq ( (==.) )
import Rel8.Expr.Function (function)
import Rel8.Expr.Opaleye ( castExpr )
import Rel8.Schema.Null ( Homonullable, Sql )
import Rel8.Table.Bool ( bool )
import Rel8.Type.Num ( DBFractional, DBIntegral, DBNum )
fromIntegral :: (Sql DBIntegral a, Sql DBNum b, Homonullable a b)
=> Expr a -> Expr b
fromIntegral :: forall a b.
(Sql DBIntegral a, Sql DBNum b, Homonullable a b) =>
Expr a -> Expr b
fromIntegral (Expr PrimExpr
a) = Expr b -> Expr b
forall a. Sql DBType a => Expr a -> Expr a
castExpr (PrimExpr -> Expr b
forall a. PrimExpr -> Expr a
Expr PrimExpr
a)
realToFrac :: (Sql DBNum a, Sql DBFractional b, Homonullable a b)
=> Expr a -> Expr b
realToFrac :: forall a b.
(Sql DBNum a, Sql DBFractional b, Homonullable a b) =>
Expr a -> Expr b
realToFrac (Expr PrimExpr
a) = Expr b -> Expr b
forall a. Sql DBType a => Expr a -> Expr a
castExpr (PrimExpr -> Expr b
forall a. PrimExpr -> Expr a
Expr PrimExpr
a)
ceiling :: (Sql DBFractional a, Sql DBIntegral b, Homonullable a b)
=> Expr a -> Expr b
ceiling :: forall a b.
(Sql DBFractional a, Sql DBIntegral b, Homonullable a b) =>
Expr a -> Expr b
ceiling = QualifiedName -> Expr a -> Expr b
forall arguments a.
(Arguments arguments, Sql DBType a) =>
QualifiedName -> arguments -> Expr a
function QualifiedName
"ceiling"
div :: Sql DBIntegral a => Expr a -> Expr a -> Expr a
div :: forall a. Sql DBIntegral a => Expr a -> Expr a -> Expr a
div Expr a
n Expr a
d = (Expr a, Expr a) -> Expr a
forall a b. (a, b) -> a
fst (Expr a -> Expr a -> (Expr a, Expr a)
forall a. Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
divMod Expr a
n Expr a
d)
mod :: Sql DBIntegral a => Expr a -> Expr a -> Expr a
mod :: forall a. Sql DBIntegral a => Expr a -> Expr a -> Expr a
mod Expr a
n Expr a
d = (Expr a, Expr a) -> Expr a
forall a b. (a, b) -> b
snd (Expr a -> Expr a -> (Expr a, Expr a)
forall a. Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
divMod Expr a
n Expr a
d)
divMod :: Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
divMod :: forall a. Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
divMod Expr a
n Expr a
d = (Expr a, Expr a)
-> (Expr a, Expr a) -> Expr Bool -> (Expr a, Expr a)
forall a. Table Expr a => a -> a -> Expr Bool -> a
bool (Expr a, Expr a)
qr (Expr a
q Expr a -> Expr a -> Expr a
forall a. Num a => a -> a -> a
- Expr a
1, Expr a
r Expr a -> Expr a -> Expr a
forall a. Num a => a -> a -> a
+ Expr a
d) (Expr a -> Expr a
forall a. Num a => a -> a
signum Expr a
r Expr a -> Expr a -> Expr Bool
forall a. Sql DBEq a => Expr a -> Expr a -> Expr Bool
==. Expr a -> Expr a
forall a. Num a => a -> a
negate (Expr a -> Expr a
forall a. Num a => a -> a
signum Expr a
d))
where
qr :: (Expr a, Expr a)
qr@(Expr a
q, Expr a
r) = Expr a -> Expr a -> (Expr a, Expr a)
forall a. Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
quotRem Expr a
n Expr a
d
quot :: Sql DBIntegral a => Expr a -> Expr a -> Expr a
quot :: forall a. Sql DBIntegral a => Expr a -> Expr a -> Expr a
quot Expr a
n Expr a
d = QualifiedName -> (Expr a, Expr a) -> Expr a
forall arguments a.
(Arguments arguments, Sql DBType a) =>
QualifiedName -> arguments -> Expr a
function QualifiedName
"div" (Expr a
n, Expr a
d)
rem :: Sql DBIntegral a => Expr a -> Expr a -> Expr a
rem :: forall a. Sql DBIntegral a => Expr a -> Expr a -> Expr a
rem Expr a
n Expr a
d = QualifiedName -> (Expr a, Expr a) -> Expr a
forall arguments a.
(Arguments arguments, Sql DBType a) =>
QualifiedName -> arguments -> Expr a
function QualifiedName
"mod" (Expr a
n, Expr a
d)
quotRem :: Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
quotRem :: forall a. Sql DBIntegral a => Expr a -> Expr a -> (Expr a, Expr a)
quotRem Expr a
n Expr a
d = (Expr a -> Expr a -> Expr a
forall a. Sql DBIntegral a => Expr a -> Expr a -> Expr a
quot Expr a
n Expr a
d, Expr a -> Expr a -> Expr a
forall a. Sql DBIntegral a => Expr a -> Expr a -> Expr a
rem Expr a
n Expr a
d)
floor :: (Sql DBFractional a, Sql DBIntegral b, Homonullable a b)
=> Expr a -> Expr b
floor :: forall a b.
(Sql DBFractional a, Sql DBIntegral b, Homonullable a b) =>
Expr a -> Expr b
floor = QualifiedName -> Expr a -> Expr b
forall arguments a.
(Arguments arguments, Sql DBType a) =>
QualifiedName -> arguments -> Expr a
function QualifiedName
"floor"
round :: (Sql DBFractional a, Sql DBIntegral b, Homonullable a b)
=> Expr a -> Expr b
round :: forall a b.
(Sql DBFractional a, Sql DBIntegral b, Homonullable a b) =>
Expr a -> Expr b
round = QualifiedName -> Expr a -> Expr b
forall arguments a.
(Arguments arguments, Sql DBType a) =>
QualifiedName -> arguments -> Expr a
function QualifiedName
"round"
truncate :: (Sql DBFractional a, Sql DBIntegral b, Homonullable a b)
=> Expr a -> Expr b
truncate :: forall a b.
(Sql DBFractional a, Sql DBIntegral b, Homonullable a b) =>
Expr a -> Expr b
truncate = QualifiedName -> Expr a -> Expr b
forall arguments a.
(Arguments arguments, Sql DBType a) =>
QualifiedName -> arguments -> Expr a
function QualifiedName
"trunc"