floatBuiltin1(func(x float64) (Datum, error) {
return DFloat(math.Log10(x)), nil
}),
decimalLogFn(decimal.Log10),
},
"mod": {
floatBuiltin2(func(x, y float64) (Datum, error) {
return DFloat(math.Mod(x, y)), nil
}),
decimalBuiltin2(func(x, y *inf.Dec) (Datum, error) {
if y.Sign() == 0 {
return nil, errZeroModulus
}
dd := &DDecimal{}
decimal.Mod(&dd.Dec, x, y)
return dd, nil
}),
builtin{
returnType: typeInt,
types: argTypes{intType, intType},
fn: func(_ EvalContext, args DTuple) (Datum, error) {
y := args[1].(DInt)
if y == 0 {
return DNull, errZeroModulus
}
x := args[0].(DInt)
return DInt(x % y), nil
},
},
},
binArgs{Mod, floatType, floatType}: {
returnType: DummyFloat,
fn: func(_ EvalContext, left Datum, right Datum) (Datum, error) {
return DFloat(math.Mod(float64(left.(DFloat)), float64(right.(DFloat)))), nil
},
},
binArgs{Mod, decimalType, decimalType}: {
returnType: DummyDecimal,
fn: func(_ EvalContext, left Datum, right Datum) (Datum, error) {
l := left.(*DDecimal).Dec
r := right.(*DDecimal).Dec
if r.Sign() == 0 {
return nil, errZeroModulus
}
dd := &DDecimal{}
decimal.Mod(&dd.Dec, &l, &r)
return dd, nil
},
},
binArgs{Concat, stringType, stringType}: {
returnType: DummyString,
fn: func(_ EvalContext, left Datum, right Datum) (Datum, error) {
return left.(DString) + right.(DString), nil
},
},
binArgs{Concat, bytesType, bytesType}: {
returnType: DummyBytes,
fn: func(_ EvalContext, left Datum, right Datum) (Datum, error) {
return left.(DBytes) + right.(DBytes), nil
},