// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package constraints defines some useful type constraints.
package constraints

// Ordered permits any ordered type: any type that supports
// the operations <, <=, >=, >, as well as == and !=.
type Ordered interface {
	type int, int8, int16, int32, int64,
		uint, uint8, uint16, uint32, uint64, uintptr,
		float32, float64,
		string
}

// Integer permits any integer type.
type Integer interface {
	type int, int8, int16, int32, int64,
		uint, uint8, uint16, uint32, uint64, uintptr
}

// Signed permits any signed integer type.
type Signed interface {
	type int, int8, int16, int32, int64
}

// Unsigned permits any unsigned integer type.
type Unsigned interface {
	type uint, uint8, uint16, uint32, uint64, uintptr
}