How can I get a specified weapon's ammo?

[12p]

I have tried to find that function (getWeaponAmmo) but the only I did can find are these:

getPedAmmoInClip 
getPedTotalAmmo 
setWeaponAmmo 
takeWeaponAmmo 
giveWeaponAmmo 

So, how can I get all ammo in a specified weapon? getPedTotalAmmo retrieves ALL WEAPONS' ammo so it doesn't help me.

PS: To be more specific, I want to retrieve "clip + non-clip" weapon's ammo.

[SDK]

I think you're wrong about that

https://wiki.multitheftauto.com/wiki/GetPedTotalAmmo

This function returns an integer that contains the total ammo in a specified ped's weapon.

int getPedTotalAmmo ( ped thePed, [ int weaponSlot = current ] )