1 //     Copyright 2021, Kay Hayen, mailto:kay.hayen@gmail.com
2 //
3 //     Part of "Nuitka", an optimizing Python compiler that is compatible and
4 //     integrates with CPython, but also works on its own.
5 //
6 //     Licensed under the Apache License, Version 2.0 (the "License");
7 //     you may not use this file except in compliance with the License.
8 //     You may obtain a copy of the License at
9 //
10 //        http://www.apache.org/licenses/LICENSE-2.0
11 //
12 //     Unless required by applicable law or agreed to in writing, software
13 //     distributed under the License is distributed on an "AS IS" BASIS,
14 //     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 //     See the License for the specific language governing permissions and
16 //     limitations under the License.
17 //
18 /* These are defines used in floordiv code.
19 
20  */
21 
22 // This file is included from another C file, help IDEs to still parse it on
23 // its own.
24 #ifdef __IDE_ONLY__
25 #include "nuitka/prelude.h"
26 #endif
27 
28 #include <float.h>
29 
30 /* Check if unary negation would not fit into long */
31 #define UNARY_NEG_WOULD_OVERFLOW(x) ((x) < 0 && (unsigned long)(x) == 0 - (unsigned long)(x))
32 /* This is from pyport.h */
33 #define WIDTH_OF_ULONG (CHAR_BIT * SIZEOF_LONG)
34