const crypto/sha512.magic512

7 uses

	crypto/sha512 (current package)
		sha512.go#L137: 	magic512      = "sha\x07"
		sha512.go#L138: 	marshaledSize = len(magic512) + 8*8 + chunk + 8
		sha512.go#L151: 		b = append(b, magic512...)
		sha512.go#L170: 	if len(b) < len(magic512) {
		sha512.go#L177: 	case d.function == crypto.SHA512 && string(b[:len(magic512)]) == magic512:
		sha512.go#L184: 	b = b[len(magic512):]