# isnum proc

Source: https://ref.dm-lang.org/proc/isnum

### Format
> `isnum(Val)`

### Returns
> 1 if Val is a number; 0 otherwise

### See also
- [isinf proc](https://ref.dm-lang.org/proc/isinf.md)
- [isnan proc](https://ref.dm-lang.org/proc/isnan.md)
- [Numbers](https://ref.dm-lang.org/notes/numbers.md)