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valuetype.go
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valuetype.go
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/*
* FrankyGo - UCI chess engine in GO for learning purposes
*
* MIT License
*
* Copyright (c) 2018-2020 Frank Kopp
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package types
// ValueType is a set of constants for value types used in search and TtTable
type ValueType int8
// ValueType is a set of constants for value types used in search and TtTable
//noinspection GoVarAndConstTypeMayBeOmitted
const (
Vnone ValueType = 0
EXACT ValueType = 1
ALPHA ValueType = 2 // upper bound
BETA ValueType = 3 // lower bound
Vlength int = 4
)
// IsValid check if pt is a valid value type
func (vt ValueType) IsValid() bool {
return vt < 4
}
// array of string labels for piece types
var valueTypeToString = [Vlength]string{"NoneValue", "ExactValue", "AlphaValue", "BetaValue"}
// String returns a string representation of a piece type
func (vt ValueType) String() string {
return valueTypeToString[vt]
}