Add Sint16 type + libfuncs (#382)

* Push progress

* Parse Sint8 result value

* Improve sub test + fix how signed values are compared against vm values

* Clippy

* Improve testing

* Fix

* Try stuff

* Fix typos

* Fix test values

* Add test & fix wide_mul

* First draft of diff libfunc

* Improve test

* Remove old code

* Add test

* Add Sint16 type + libfuncs

* fmt

* Remove uneeded intermidiate variables

* Update code

src/jit_runner.rs

@@ -215,7 +215,17 @@ pub fn execute(
 
                 params_ptrs.push(next.to_jit(&arena, registry, param_type_id)?);
             }
-            CoreTypeConcrete::Sint16(_) => todo!(),
+            CoreTypeConcrete::Sint16(_) => {
+                let next = params_it
+                    .next()
+                    .ok_or_else(|| make_missing_parameter(param_type_id))?;
+
+                if !matches!(next, JITValue::Sint16(_)) {
+                    Err(make_unexpected_value_error("JITValue::Sint16".to_string()))?;
+                }
+
+                params_ptrs.push(next.to_jit(&arena, registry, param_type_id)?);
+            }
             CoreTypeConcrete::Sint32(_) => todo!(),
             CoreTypeConcrete::Sint64(_) => todo!(),
             CoreTypeConcrete::Sint128(_) => todo!(),

src/libfuncs.rs

@@ -41,6 +41,7 @@ pub mod mem;
 pub mod nullable;
 pub mod pedersen;
 pub mod poseidon;
+pub mod sint16;
 pub mod sint8;
 pub mod snapshot_take;
 pub mod stark_net;
@@ -203,7 +204,9 @@ where
             Self::Sint8(info) => {
                 self::sint8::build(context, registry, entry, location, helper, metadata, info)
             }
-            CoreConcreteLibfunc::Sint16(_) => todo!(),
+            CoreConcreteLibfunc::Sint16(info) => {
+                self::sint16::build(context, registry, entry, location, helper, metadata, info)
+            }
             CoreConcreteLibfunc::Sint32(_) => todo!(),
             CoreConcreteLibfunc::Sint64(_) => todo!(),
             CoreConcreteLibfunc::Sint128(_) => todo!(),