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73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
// Copyright 2014 The ql Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSES/QL-LICENSE file.
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// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package types
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// CompareInt64 returns an integer comparing the int64 x to y.
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func CompareInt64(x, y int64) int {
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if x < y {
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return -1
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} else if x == y {
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return 0
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}
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return 1
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}
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// CompareUint64 returns an integer comparing the uint64 x to y.
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func CompareUint64(x, y uint64) int {
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if x < y {
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return -1
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} else if x == y {
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return 0
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}
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return 1
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}
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// CompareFloat64 returns an integer comparing the float64 x to y.
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func CompareFloat64(x, y float64) int {
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if x < y {
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return -1
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} else if x == y {
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return 0
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}
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return 1
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}
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// CompareString returns an integer comparing the string x to y.
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func CompareString(x, y string) int {
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if x < y {
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return -1
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} else if x == y {
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return 0
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}
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return 1
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}
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// Compare returns an integer comparing the interface a with b.
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// a > b -> 1
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// a = b -> 0
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// a < b -> -1
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func Compare(a, b interface{}) (int, error) {
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aDatum := NewDatum(a)
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bDatum := NewDatum(b)
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return aDatum.CompareDatum(bDatum)
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}
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