core: Remove trunc

The behavior of trunc is already implemented by casts and is therefore
redundant.

nac3core/src/toplevel/builtins.rs

@@ -1525,14 +1525,6 @@ pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
             &[(float, "x")],
             "llvm.fabs.f64",
         ),
-        create_fn_by_intrinsic(
-            primitives,
-            &var_map,
-            "trunc",
-            float,
-            &[(float, "x")],
-            "llvm.trunc.f64",
-        ),
         create_fn_by_intrinsic(
             primitives,
             &var_map,
@@ -2002,7 +1994,6 @@ pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
             "log10",
             "log2",
             "fabs",
-            "trunc",
             "sqrt",
             "rint",
             "tan",

nac3standalone/demo/src/math.py

@@ -95,10 +95,6 @@ def test_ceil64():
     for x in [-1.5, -0.5, 0.5, 1.5]:
         output_int64(ceil64(x))
 
-def test_trunc():
-    for x in [-1.5, -0.5, 0.5, 1.5, dbl_inf(), -dbl_inf(), dbl_nan()]:
-        output_float64(trunc(x))
-
 def test_sqrt():
     for x in [1.0, 2.0, 4.0, dbl_inf(), -dbl_inf(), dbl_nan()]:
         output_float64(sqrt(x))
@@ -232,7 +228,6 @@ def run() -> int32:
     test_floor64()
     test_ceil()
     test_ceil64()
-    test_trunc()
     test_sqrt()
     test_rint()
     test_tan()