func mustInt64(val interface{}) int64 {
	if v, ok := val.(int64); ok {
		return v
	}
	if v, ok := val.(int); ok {
		return int64(v)
	}
	panic("bad value")
}
func mustInt64(val interface{}) int64 {
	if v, ok := val.(int64); ok {
		return v
	}
	if v, ok := val.(int); ok {
		return int64(v)
	}
	panic("bad value")
}
func mustInt64 ( val interface { } ) int64 { if v , ok := val . ( int64 ) ; ok { return v } if v , ok := val . ( int ) ; ok { return int64 ( v ) } panic ( " " ) }
// mustInt64 panics if val isn't an int or int64. It returns an int64 otherwise.
mustInt64 panics if val isn t an int or int64 . It returns an int64 otherwise .