Fix floating point precision

Cargo.toml

@@ -37,9 +37,9 @@ classifier = [
 [dependencies]
 encoding_rs = { version = "0.8", default_features = false, features = ["simd-accel"] }
 itoa = { version = "0.4", default_features = false }
-pyo3 = { git = "https://github.com/PyO3/pyo3.git", rev = "dc2fc80f4aeb89dd645a20620b292bfea4756228", features = ["extension-module"]}
+pyo3 = { git = "https://github.com/PyO3/pyo3.git", rev = "77f0974dafb8819b95437e74da581d7d9c41a1ad", features = ["extension-module"]}
 serde = { version = "1", default_features = false }
-serde_json = { version = "1", default_features = false }
+serde_json = { git = "https://github.com/ijl/json.git", rev = "2c0c55b628c9177543283a1535549e1dcb6a870a", default_features = false, features = ["num_lexical"] }
 smallvec = { version = "0.6", default_features = false, features = ["union"] }
 
 [profile.release]

test/test_jsonchecker.py

@@ -13,7 +13,7 @@
 _path = os.path.join(os.path.dirname(__file__), '..', 'data', 'jsonchecker')
 
 
-PATTERN_1 = '["JSON Test Pattern pass1",{"object with 1 member":["array with 1 element"]},{},[],-42,true,false,null,{"integer":1234567890,"real":-9876.54321,"e":1.23456789e-13,"E":1.2345678900000002e34,"":2.3456789011999997e76,"zero":0,"one":1,"space":" ","quote":"\\"","backslash":"\\\\","controls":"\\b\\f\\n\\r\\t","slash":"/ & /","alpha":"abcdefghijklmnopqrstuvwyz","ALPHA":"ABCDEFGHIJKLMNOPQRSTUVWYZ","digit":"0123456789","0123456789":"digit","special":"`1~!@#$%^&*()_+-={\':[,]}|;.</>?","hex":"ģ䕧覫췯ꯍ\uef4a","true":true,"false":false,"null":null,"array":[],"object":{},"address":"50 St. James Street","url":"http://www.JSON.org/","comment":"// /* <!-- --","# -- --> */":" "," s p a c e d ":[1,2,3,4,5,6,7],"compact":[1,2,3,4,5,6,7],"jsontext":"{\\"object with 1 member\\":[\\"array with 1 element\\"]}","quotes":"&#34; \\" %22 0x22 034 &#x22;","/\\\\\\"쫾몾ꮘﳞ볚\uef4a\\b\\f\\n\\r\\t`1~!@#$%^&*()_+-=[]{}|;:\',./<>?":"A key can be any string"},0.5,98.6,99.44,1066,10.0,1.0,0.1,1.0,2.0,2.0,"rosebud"]'.encode('utf-8')
+PATTERN_1 = '["JSON Test Pattern pass1",{"object with 1 member":["array with 1 element"]},{},[],-42,true,false,null,{"integer":1234567890,"real":-9876.54321,"e":1.23456789e-13,"E":1.23456789e34,"":2.3456789012e76,"zero":0,"one":1,"space":" ","quote":"\\"","backslash":"\\\\","controls":"\\b\\f\\n\\r\\t","slash":"/ & /","alpha":"abcdefghijklmnopqrstuvwyz","ALPHA":"ABCDEFGHIJKLMNOPQRSTUVWYZ","digit":"0123456789","0123456789":"digit","special":"`1~!@#$%^&*()_+-={\':[,]}|;.</>?","hex":"ģ䕧覫췯ꯍ\uef4a","true":true,"false":false,"null":null,"array":[],"object":{},"address":"50 St. James Street","url":"http://www.JSON.org/","comment":"// /* <!-- --","# -- --> */":" "," s p a c e d ":[1,2,3,4,5,6,7],"compact":[1,2,3,4,5,6,7],"jsontext":"{\\"object with 1 member\\":[\\"array with 1 element\\"]}","quotes":"&#34; \\" %22 0x22 034 &#x22;","/\\\\\\"쫾몾ꮘﳞ볚\uef4a\\b\\f\\n\\r\\t`1~!@#$%^&*()_+-=[]{}|;:\',./<>?":"A key can be any string"},0.5,98.6,99.44,1066,10.0,1.0,0.1,1.0,2.0,2.0,"rosebud"]'.encode('utf-8')
 
 
 def _read_jsonchecker_file(filename):

test/test_type.py

@@ -182,14 +182,35 @@ def test_float(self):
         self.assertEqual(1.893, orjson.loads("1.893"))
         self.assertEqual(1.3, orjson.loads("1.3"))
 
-    @pytest.mark.xfail
-    def test_float_precision(self):
+    def test_float_precision_loads(self):
         """
-        float precision
+        float precision loads()
         """
         self.assertEqual(orjson.loads("31.245270191439438"), 31.245270191439438)
         self.assertEqual(orjson.loads("121.48791951161945"), 121.48791951161945)
 
+    def test_float_precision_dumps(self):
+        """
+        float precision dumps()
+        """
+        self.assertEqual(orjson.dumps(31.245270191439438), b'31.245270191439438')
+        self.assertEqual(orjson.dumps(121.48791951161945), b'121.48791951161945')
+
+    def test_float_edge(self):
+        """
+        float edge cases
+        """
+        self.assertEqual(orjson.dumps(0.8701), b'0.8701')
+
+        self.assertEqual(orjson.loads("0.8701"), 0.8701)
+        self.assertEqual(orjson.loads("0.0000000000000000000000000000000000000000000000000123e50"), 1.23)
+        self.assertEqual(orjson.loads("0.4e5"), 40000.0)
+        self.assertEqual(orjson.loads("0.00e-00"), 0.0)
+        self.assertEqual(orjson.loads("0.4e-001"), 0.04)
+        self.assertEqual(orjson.loads("0.123456789e-12"), 1.23456789e-13)
+        self.assertEqual(orjson.loads("1.234567890E+34"), 1.23456789e+34)
+        self.assertEqual(orjson.loads("23456789012E66"), 2.3456789012e+76)
+
     def test_float_notation(self):
         """
         float notation