core: reduce code duplication in codegen/builtin_fns

@@ -1048,0 +1053,4 @@
+/// Return a constant [`Type`] here if the return type does not depend on the input type.
+/// * `on_elem`: The function to be called when the input argument is not an ndarray. Returns [`Option::None`]
+/// if the element type & value are faulty and should panic with [`unsupported_type`].
+fn helper_call_numpy<'ctx, OnElemFn, RetElemFn, G: CodeGenerator + ?Sized>(

@@ -1048,0 +1059,4 @@
+    (arg_ty, arg_val): (Type, BasicValueEnum<'ctx>),
+    fn_name: &str,
+    get_ret_elem_type: &RetElemFn,
+    on_elem: &OnElemFn,

@@ -1070,3 +1113,1 @@
-            .any(|ty| ctx.unifier.unioned(n_ty, *ty)));
-
-            if [ctx.primitives.int32, ctx.primitives.int64]
+    let fn_name: &str = "abs";

@@ -1079,0 +1156,4 @@
+    )
+}
+
+/// Helper macro. Used so we don't have to keep typing out the type signature of the function.

@@ -1079,0 +1157,4 @@
+}
+
+/// Helper macro. Used so we don't have to keep typing out the type signature of the function.
+macro_rules! call_numpy {

@@ -1049,3 +1109,3 @@
     generator: &mut G,
     ctx: &mut CodeGenContext<'ctx, '_>,
-    n: (Type, BasicValueEnum<'ctx>),
+    arg: (Type, BasicValueEnum<'ctx>),

@@ -1079,0 +1192,4 @@
+/// * `$fn_name:literal`: To be passed to the `fn_name` parameter of [`helper_call_numpy_unary_elementwise`].
+/// * `$on_scalar:expr`: The closure (see below for its type) that acts on float scalar values and returns
+/// the boolean results of LLVM type `i1`. The returned `i1` value will be converted into an `i8`.
+/// ```rust