fix for "complex" with backend="builtins" (#11)

Author: jcmgray

.gitignore

@@ -24,6 +24,7 @@ wheels/
 .installed.cfg
 *.egg
 MANIFEST
+_version.py
 
 # PyInstaller
 #  Usually these files are written by a python script from a template
@@ -102,3 +103,6 @@ venv.bak/
 
 # mypy
 .mypy_cache/
+
+# IDE
+.vscode/

autoray/autoray.py

@@ -2,7 +2,7 @@
 AUTORAY - backend agnostic array operations.
 
 
-Copyright 2019-2021 Johnnie Gray
+Copyright 2019-2023 Johnnie Gray
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -889,7 +889,7 @@ def builtins_get_dtype_name(x):
 
 
 _FUNCS["builtins", "get_dtype_name"] = builtins_get_dtype_name
-
+_FUNCS["builtins", "complex"] = complex
 
 # ---------------------------------- numpy ---------------------------------- #
 

tests/test_autoray.py

@@ -716,3 +716,11 @@ def f(x):
     assert y == 2
     y = mycomposedfn(x)
     assert y == 2
+
+
+def test_builtins_complex():
+    re = 1.0
+    im = 2.0
+    z = ar.do('complex', re, im)
+    assert z == 1.0 + 2.0j
+    assert ar.infer_backend(z) == "builtins"