blob: 471c4dfdc5911346038e5b4a81b0d1f9cfc64cab [file] [log] [blame]
// Copyright 2009 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 unicode
// IsDigit reports whether the rune is a decimal digit.
func IsDigit(rune int) bool {
if rune < 0x100 { // quick ASCII (Latin-1, really) check
return '0' <= rune && rune <= '9'
}
return Is(Digit, rune)
}