WebAug 22, 2024 · The rules for pointer manipulation are as follows. Do not cast pointers to int, long, ULONG, or DWORD. If you must cast a pointer to test some bits, set or clear bits, or otherwise manipulate its contents, use the UINT_PTR or INT_PTR type. These types are integral types that scale to the size of a pointer for both 32- and 64-bit Windows (for ... WebApr 5, 2012 · unsigned long num = 1<<63; If you speak of x86_64, yes, a long is 64 bit and on most other 64 bit linux plytforms too. The problem is that both the 1 and the 63 in …
c++ - unsigned long long conflict with uint64_t? - Stack Overflow
WebApr 5, 2013 · The only exception is exotic systems with the SILP64 data model, where the size of int is also 64 bits. The most common operating systems (Windows, Linux, macOS) use the LP64 and LLP64 data models, where int is 32-bit. Putting a 64-bit pointer into a 32-bit variable causes the cutting of high-order bits, and therefore incorrect program behavior. WebAug 25, 2015 · In 64-bit mode, both are probably 64 bits. In 32-bit mode, the compiler (more precisely the header) defines uint64_t as unsigned long long, because … exfak 15-020p
Add support for long and long long types #87 - Github
WebSep 8, 2011 · I wasn't complaining about the lack of a 64-Bit type or proposing that it should be implemented, just saying that the acceptance of the "long long" variable type by this compiler is misleading and that it should be removed (because the C standard says that a long long must be at least 64-Bit). WebIt has several variants which includes int, long, short and long long along with signed and unsigned variants The size of int is 4 bytes and range is -2147483648 to 214748364 long long is of 16 bytes ... If Integer data type int is of 4 bytes, then the range is calculated as follows: 4 bytes = 4 X 8 = 32 bits. Each bit can store 2 values (0 and ... WebDec 8, 2005 · That works fine for 64 bit numbers on 32 bit machine. long long is a compiler extension. It is not standard and will not work on all platforms or compilers. long is guaranteed to be at least 32 bits by the standard; that's as big as it gets as far as the standard is concerned (for now). Cheers! --M herbartianismus