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atan2d.go
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atan2d.go
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// Copyright 2024 Dolthub, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package functions
import (
"fmt"
"math"
"github.com/dolthub/doltgresql/server/functions/framework"
pgtypes "github.com/dolthub/doltgresql/server/types"
)
// initAtan2d registers the functions to the catalog.
func initAtan2d() {
framework.RegisterFunction(atan2d_float64)
}
// atan2_float64 represents the PostgreSQL function of the same name, taking the same parameters.
var atan2d_float64 = framework.Function2{
Name: "atan2d",
Return: pgtypes.Float64,
Parameters: []pgtypes.DoltgresType{pgtypes.Float64, pgtypes.Float64},
Callable: func(ctx framework.Context, y any, x any) (any, error) {
if y == nil || x == nil {
return nil, nil
}
r := math.Atan2(y.(float64), x.(float64))
if math.IsNaN(r) {
return nil, fmt.Errorf("input is out of range")
}
return toDegrees(r), nil
},
}